Kljajević, Ljiljana M.

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Authority KeyName Variants
orcid::0000-0003-4678-0420
  • Kljajević, Ljiljana M. (35)
Projects
Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine Functional, Functionalized and Advanced Nanomaterials
Development and Application of Methods and Materials for Monitoring New Organic Contaminants, Toxic Compounds and Heavy Metals CMST COST Action [CM1302]
Mechanistic studies of the reactions of transition metal ion complexes with biologically relevant molecules Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča)
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200175 (Institute of Technical Sciences of SASA, Belgrade) Ministry of Education, Science and Technological Development of the Republic of Serbia
Ministry of Science and Technical Development of the Republic of Serbia [142016] Ministry of Science and Technological Development of the Republic of Serbia [142016]
Ministry of Science and Technological Development of the Republic of Serbia [142023], Synthesis and Characterization of Polymer (Nano)Composites of Defined Molecular and Supermolecular Structure Project "Restoration and construction of infrastructure for ecological and environ-mental research at Matej Bel University in Banská Bystrica", ITMS 26210120024
"Restoration and construction of infrastructure for ecological and environmental research at Matej Bel University in Banska Bystrica" [ITMS 262101200245] Slovak Grant Agency VEGA [1/0538/15]
Slovak Grant Agency VEGA No. 1/0538/15

Author's Bibliography

Chemical, physical and radiological evaluation of raw materials and geopolymers for building applications

Nenadović, Snežana S.; Ferone, Claudio; Nenadović, Miloš; Cioffi, Raffaele; Mirković, Miljana M.; Vukanac, Ivana; Kljajević, Ljiljana M.

(2020)

TY  - JOUR
AU  - Nenadović, Snežana S.
AU  - Ferone, Claudio
AU  - Nenadović, Miloš
AU  - Cioffi, Raffaele
AU  - Mirković, Miljana M.
AU  - Vukanac, Ivana
AU  - Kljajević, Ljiljana M.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9050
AB  - The main goal of this study was the evaluation of physical–chemical, as well as radiological properties of residual materials used for geopolymer synthesis and those final products as a possible application as new materials in a civil engineering industry. Concentration of K and radionuclides from the U and Th decay series in waste precursors, their metaphases and geopolymer samples synthetized by alkali activation were determined together with corresponding absorbed dose rate (D˙) and the annual effective dose rate. Natural activity concentrations in the alkali-activated material (geopolymer) were found to be lower than that of both residual materials and calcined ones.
T2  - Journal of Radioanalytical and Nuclear Chemistry
T1  - Chemical, physical and radiological evaluation of raw materials and geopolymers for building applications
VL  - 325
IS  - 2
SP  - 435
EP  - 445
DO  - 10.1007/s10967-020-07250-1
ER  - 
@article{
author = "Nenadović, Snežana S. and Ferone, Claudio and Nenadović, Miloš and Cioffi, Raffaele and Mirković, Miljana M. and Vukanac, Ivana and Kljajević, Ljiljana M.",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/9050",
abstract = "The main goal of this study was the evaluation of physical–chemical, as well as radiological properties of residual materials used for geopolymer synthesis and those final products as a possible application as new materials in a civil engineering industry. Concentration of K and radionuclides from the U and Th decay series in waste precursors, their metaphases and geopolymer samples synthetized by alkali activation were determined together with corresponding absorbed dose rate (D˙) and the annual effective dose rate. Natural activity concentrations in the alkali-activated material (geopolymer) were found to be lower than that of both residual materials and calcined ones.",
journal = "Journal of Radioanalytical and Nuclear Chemistry",
title = "Chemical, physical and radiological evaluation of raw materials and geopolymers for building applications",
volume = "325",
number = "2",
pages = "435-445",
doi = "10.1007/s10967-020-07250-1"
}
Nenadović, S. S., Ferone, C., Nenadović, M., Cioffi, R., Mirković, M. M., Vukanac, I.,& Kljajević, L. M. (2020). Chemical, physical and radiological evaluation of raw materials and geopolymers for building applications.
Journal of Radioanalytical and Nuclear Chemistry, 325(2), 435-445.
https://doi.org/10.1007/s10967-020-07250-1
Nenadović SS, Ferone C, Nenadović M, Cioffi R, Mirković MM, Vukanac I, Kljajević LM. Chemical, physical and radiological evaluation of raw materials and geopolymers for building applications. Journal of Radioanalytical and Nuclear Chemistry. 2020;325(2):435-445
Nenadović Snežana S., Ferone Claudio, Nenadović Miloš, Cioffi Raffaele, Mirković Miljana M., Vukanac Ivana, Kljajević Ljiljana M., "Chemical, physical and radiological evaluation of raw materials and geopolymers for building applications" Journal of Radioanalytical and Nuclear Chemistry, 325, no. 2 (2020):435-445,
https://doi.org/10.1007/s10967-020-07250-1 .
2
1
2

Study of Nanosized Hydroxyapatite Material Annealing at Different Retention Times

Miljković, Miljana; Kljajević, Ljiljana M.; Filipović, Suzana; Pavlović, Vladimir B.; Nenadović, Snežana S.

(2020)

TY  - JOUR
AU  - Miljković, Miljana
AU  - Kljajević, Ljiljana M.
AU  - Filipović, Suzana
AU  - Pavlović, Vladimir B.
AU  - Nenadović, Snežana S.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8916
AB  - The aim of the study was to investigate the influence of low heating temperatures with two different retention times to optimize the process for obtaining nanosized hydroxyapatite material that can possibly be used in the fields of biology and pharmacy. Nanosized hydroxyapatite was successfully obtained by wet chemical precipitation. The annealing of the material performed at 300 oC with two different retention times i.e. 3 and 6 hours in air atmosphere. Low annealing temperature with extended retention time was selected in terms to reduce energy consumption. FTIR spectroscopy was used to confirm characteristic vibrational bands of hydroxyapatite samples, and presence of carbonate bands of hydroxyapatite annealed for 3h and 6h. X-Ray powder diffraction analysis were used to examine phase composition, determine the size of unit cells and crystallite sizes, and SEMEDS methods were used to obtain particle size and arrangement also grain growth morphology and confirmed the presence of calcium, phosphorous oxygen and carbonate peaks. The results show that different retention time has influence on particle growth as well as unit cell parameters and crystallite sizes changes of hydroxyapatite material.
T2  - Science of Sintering
T1  - Study of Nanosized Hydroxyapatite Material Annealing at Different Retention Times
VL  - 52
IS  - 4
SP  - 405
EP  - 413
DO  - 10.2298/SOS2004405M
ER  - 
@article{
author = "Miljković, Miljana and Kljajević, Ljiljana M. and Filipović, Suzana and Pavlović, Vladimir B. and Nenadović, Snežana S.",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8916",
abstract = "The aim of the study was to investigate the influence of low heating temperatures with two different retention times to optimize the process for obtaining nanosized hydroxyapatite material that can possibly be used in the fields of biology and pharmacy. Nanosized hydroxyapatite was successfully obtained by wet chemical precipitation. The annealing of the material performed at 300 oC with two different retention times i.e. 3 and 6 hours in air atmosphere. Low annealing temperature with extended retention time was selected in terms to reduce energy consumption. FTIR spectroscopy was used to confirm characteristic vibrational bands of hydroxyapatite samples, and presence of carbonate bands of hydroxyapatite annealed for 3h and 6h. X-Ray powder diffraction analysis were used to examine phase composition, determine the size of unit cells and crystallite sizes, and SEMEDS methods were used to obtain particle size and arrangement also grain growth morphology and confirmed the presence of calcium, phosphorous oxygen and carbonate peaks. The results show that different retention time has influence on particle growth as well as unit cell parameters and crystallite sizes changes of hydroxyapatite material.",
journal = "Science of Sintering",
title = "Study of Nanosized Hydroxyapatite Material Annealing at Different Retention Times",
volume = "52",
number = "4",
pages = "405-413",
doi = "10.2298/SOS2004405M"
}
Miljković, M., Kljajević, L. M., Filipović, S., Pavlović, V. B.,& Nenadović, S. S. (2020). Study of Nanosized Hydroxyapatite Material Annealing at Different Retention Times.
Science of Sintering, 52(4), 405-413.
https://doi.org/10.2298/SOS2004405M
Miljković M, Kljajević LM, Filipović S, Pavlović VB, Nenadović SS. Study of Nanosized Hydroxyapatite Material Annealing at Different Retention Times. Science of Sintering. 2020;52(4):405-413
Miljković Miljana, Kljajević Ljiljana M., Filipović Suzana, Pavlović Vladimir B., Nenadović Snežana S., "Study of Nanosized Hydroxyapatite Material Annealing at Different Retention Times" Science of Sintering, 52, no. 4 (2020):405-413,
https://doi.org/10.2298/SOS2004405M .
1
1

Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite

Bučevac, Dušan; Omerašević, Mia; Egelja, Adela; Radovanović, Željko; Kljajević, Ljiljana M.; Nenadović, Snežana S.; Krstić, Vladimir

(2020)

TY  - JOUR
AU  - Bučevac, Dušan
AU  - Omerašević, Mia
AU  - Egelja, Adela
AU  - Radovanović, Željko
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Krstić, Vladimir
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8888
AB  - Comprehensive study on effect of YAG amount on densification, creep resistance and room-temperature mechanical properties of Al2O3-YAG composite pressureless sintered at 1600 degrees C was conducted. The main goal was to optimize the amount of YAG in order to fabricate a composite with improved creep resistance and sufficiently good room-temperature mechanical properties. The composite was made by mixing a commercially available Al2O3 powder with fine YAG powder obtained by glycine-nitrate combustion synthesis starting from aluminum nitrate and yttrium nitrate. Increased driving force for sintering of fine YAG powder allowed fabrication of dense Al2O3-YAG composite with up to 30 vol% YAG. The presence of YAG was found to be very effective in improving creep resistance of Al2O3-YAG composite. Large Y3+ ions blocked diffusion along Al2O3 grain boundaries, reduced diffusivity and therefore enhanced creep resistance of Al2O3-YAG composite which continuously increased as the YAG amount increased. The presence of YAG was also found to improve mechanical properties such as hardness and elastic modulus. The improvement of these properties was ascribed to increased density of Al(2)O(3)YAG composites owing to high sintering activity of YAG powder. While fracture strength of the composite can be as high as that of monolithic Al2O3, fracture toughness of composite decreased continuously as the YAG content increased. The decrease was ascribed to transgranular fracture of both YAG and Al2O3 grains in samples containing larger amounts of YAG. The proper balance between fracture toughness and creep resistance was found in composite containing 18 vol% YAG which had considerably improved creep resistance accompanied by a relatively small decrease in fracture toughness.
T2  - Ceramics International
T1  - Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite
VL  - 46
IS  - 10
SP  - 15998
EP  - 16007
DO  - 10.1016/j.ceramint.2020.03.150
ER  - 
@article{
author = "Bučevac, Dušan and Omerašević, Mia and Egelja, Adela and Radovanović, Željko and Kljajević, Ljiljana M. and Nenadović, Snežana S. and Krstić, Vladimir",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8888",
abstract = "Comprehensive study on effect of YAG amount on densification, creep resistance and room-temperature mechanical properties of Al2O3-YAG composite pressureless sintered at 1600 degrees C was conducted. The main goal was to optimize the amount of YAG in order to fabricate a composite with improved creep resistance and sufficiently good room-temperature mechanical properties. The composite was made by mixing a commercially available Al2O3 powder with fine YAG powder obtained by glycine-nitrate combustion synthesis starting from aluminum nitrate and yttrium nitrate. Increased driving force for sintering of fine YAG powder allowed fabrication of dense Al2O3-YAG composite with up to 30 vol% YAG. The presence of YAG was found to be very effective in improving creep resistance of Al2O3-YAG composite. Large Y3+ ions blocked diffusion along Al2O3 grain boundaries, reduced diffusivity and therefore enhanced creep resistance of Al2O3-YAG composite which continuously increased as the YAG amount increased. The presence of YAG was also found to improve mechanical properties such as hardness and elastic modulus. The improvement of these properties was ascribed to increased density of Al(2)O(3)YAG composites owing to high sintering activity of YAG powder. While fracture strength of the composite can be as high as that of monolithic Al2O3, fracture toughness of composite decreased continuously as the YAG content increased. The decrease was ascribed to transgranular fracture of both YAG and Al2O3 grains in samples containing larger amounts of YAG. The proper balance between fracture toughness and creep resistance was found in composite containing 18 vol% YAG which had considerably improved creep resistance accompanied by a relatively small decrease in fracture toughness.",
journal = "Ceramics International",
title = "Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite",
volume = "46",
number = "10",
pages = "15998-16007",
doi = "10.1016/j.ceramint.2020.03.150"
}
Bučevac, D., Omerašević, M., Egelja, A., Radovanović, Ž., Kljajević, L. M., Nenadović, S. S.,& Krstić, V. (2020). Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite.
Ceramics International, 46(10), 15998-16007.
https://doi.org/10.1016/j.ceramint.2020.03.150
Bučevac D, Omerašević M, Egelja A, Radovanović Ž, Kljajević LM, Nenadović SS, Krstić V. Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite. Ceramics International. 2020;46(10):15998-16007
Bučevac Dušan, Omerašević Mia, Egelja Adela, Radovanović Željko, Kljajević Ljiljana M., Nenadović Snežana S., Krstić Vladimir, "Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite" Ceramics International, 46, no. 10 (2020):15998-16007,
https://doi.org/10.1016/j.ceramint.2020.03.150 .
1
1
1

Structural and morphological characterization of iron-doped sol-gel derived mullite powders

Ilić, Svetlana M.; Babić, Biljana M.; Bjelajac, Anđelika; Stoimenov, Nikolay; Kljajević, Ljiljana M.; Pošarac-Marković, Milica B.; Matović, Branko

(2020)

TY  - JOUR
AU  - Ilić, Svetlana M.
AU  - Babić, Biljana M.
AU  - Bjelajac, Anđelika
AU  - Stoimenov, Nikolay
AU  - Kljajević, Ljiljana M.
AU  - Pošarac-Marković, Milica B.
AU  - Matović, Branko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8823
AB  - The structural and morphological properties of iron-doped mullite powders are the subject of the present study. The powders of undoped and iron-doped mullite in the composition range of 3–15 wt% Fe2O3 were synthesized by a combination of sol-gel and combustion methods. The excess of water and urea were introduced in reaction solutions to enhance the copolymerization of aluminum and silicon species. The results of structural characterization revealed that the synthesized mullite powders were amorphous of a hybrid type. The specific surface area of the undoped mullite powder was 262 m2 g-1 with a maximum pore radius (dp) of 2 nm classifying it into mesoporous materials. The addition of iron has reduced the specific surface area, while the pore size value remained the same except for the sample with 3 wt% Fe2O3 (SBET = 278 m2 g-1; dp = 3 nm). The presence of iron caused lowering the temperature of liquid phase formation, while present urea combusted providing the increase of the temperature locally that caused the sintering and formation of agglomerates of smaller particles. However, the results of the particle size analysis are not straightforward. The values of mean volume diameter (D[3,4]) indicated that the particle size increased to 6 wt% Fe2O3 (123.6 μm), and then decreased and for the sample with 12 wt% Fe2O3, it was equal to 96.6 μm. Thus, the added iron contributed to the more uniform particle size distribution. The SEM analysis has also shown the coarse powder particles consisted of the coalesced smaller particles. © 2020 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Structural and morphological characterization of iron-doped sol-gel derived mullite powders
VL  - 46
IS  - 9
SP  - 13107
EP  - 13113
DO  - 10.1016/j.ceramint.2020.02.083
ER  - 
@article{
author = "Ilić, Svetlana M. and Babić, Biljana M. and Bjelajac, Anđelika and Stoimenov, Nikolay and Kljajević, Ljiljana M. and Pošarac-Marković, Milica B. and Matović, Branko",
year = "2020",
url = "https://vinar.vin.bg.ac.rs/handle/123456789/8823",
abstract = "The structural and morphological properties of iron-doped mullite powders are the subject of the present study. The powders of undoped and iron-doped mullite in the composition range of 3–15 wt% Fe2O3 were synthesized by a combination of sol-gel and combustion methods. The excess of water and urea were introduced in reaction solutions to enhance the copolymerization of aluminum and silicon species. The results of structural characterization revealed that the synthesized mullite powders were amorphous of a hybrid type. The specific surface area of the undoped mullite powder was 262 m2 g-1 with a maximum pore radius (dp) of 2 nm classifying it into mesoporous materials. The addition of iron has reduced the specific surface area, while the pore size value remained the same except for the sample with 3 wt% Fe2O3 (SBET = 278 m2 g-1; dp = 3 nm). The presence of iron caused lowering the temperature of liquid phase formation, while present urea combusted providing the increase of the temperature locally that caused the sintering and formation of agglomerates of smaller particles. However, the results of the particle size analysis are not straightforward. The values of mean volume diameter (D[3,4]) indicated that the particle size increased to 6 wt% Fe2O3 (123.6 μm), and then decreased and for the sample with 12 wt% Fe2O3, it was equal to 96.6 μm. Thus, the added iron contributed to the more uniform particle size distribution. The SEM analysis has also shown the coarse powder particles consisted of the coalesced smaller particles. © 2020 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Structural and morphological characterization of iron-doped sol-gel derived mullite powders",
volume = "46",
number = "9",
pages = "13107-13113",
doi = "10.1016/j.ceramint.2020.02.083"
}
Ilić, S. M., Babić, B. M., Bjelajac, A., Stoimenov, N., Kljajević, L. M., Pošarac-Marković, M. B.,& Matović, B. (2020). Structural and morphological characterization of iron-doped sol-gel derived mullite powders.
Ceramics International, 46(9), 13107-13113.
https://doi.org/10.1016/j.ceramint.2020.02.083
Ilić SM, Babić BM, Bjelajac A, Stoimenov N, Kljajević LM, Pošarac-Marković MB, Matović B. Structural and morphological characterization of iron-doped sol-gel derived mullite powders. Ceramics International. 2020;46(9):13107-13113
Ilić Svetlana M., Babić Biljana M., Bjelajac Anđelika, Stoimenov Nikolay, Kljajević Ljiljana M., Pošarac-Marković Milica B., Matović Branko, "Structural and morphological characterization of iron-doped sol-gel derived mullite powders" Ceramics International, 46, no. 9 (2020):13107-13113,
https://doi.org/10.1016/j.ceramint.2020.02.083 .
2
1
3

The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water

Mladenović, Nataša; Kljajević, Ljiljana M.; Nenadović, Snežana S.; Ivanović, Marija D.; Čalija, Bojan; Gulicovski, Jelena J.; Trivunac, Katarina V.

(2020)

TY  - JOUR
AU  - Mladenović, Nataša
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Ivanović, Marija D.
AU  - Čalija, Bojan
AU  - Gulicovski, Jelena J.
AU  - Trivunac, Katarina V.
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8561
AB  - Fundamental research of inorganic polymers prepared from available aluminosilicate precursors represent an innovative class of materials characterized by low energy consumption for production. This is just one of the reasons why their use is focused in protecting the environment for removing of heavy metals from aqueous solutions. The concentration of hydroxide as activator solution plays an important role in the geopolymerization process. The present study examined the use of geopolymer materials, obtained in reaction of geopolymerizations of metakaolin as precursor activated with NaOH concentration 2.0, 4.0, 6.0 and 8.0 mol/dm3 for removal of cadmium ions from aqueous solutions. The structure and properties of the obtained geopolymer samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflection infrared spectroscopy (DRIFTS). To investigate the surface charge of geopolymers the zeta potential measurements were performed. Batch adsorption experiments conducted at room temperature (23 ± 1 °C) showed that the adsorption pattern followed the Freundlich isotherm model. The maximum removal of cadmium obtained from batch studies was 84.1% for GP6M at pH ≈ 6.7. The results generally showed that geopolymer samples could be considered as a potential adsorbent for cadmium removal from aqueous solutions. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Journal of Inorganic and Organometallic Polymers and Materials
T1  - The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water
VL  - 30
IS  - 2
SP  - 554
EP  - 563
DO  - 10.1007/s10904-019-01215-y
ER  - 
@article{
author = "Mladenović, Nataša and Kljajević, Ljiljana M. and Nenadović, Snežana S. and Ivanović, Marija D. and Čalija, Bojan and Gulicovski, Jelena J. and Trivunac, Katarina V.",
year = "2020",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8561",
abstract = "Fundamental research of inorganic polymers prepared from available aluminosilicate precursors represent an innovative class of materials characterized by low energy consumption for production. This is just one of the reasons why their use is focused in protecting the environment for removing of heavy metals from aqueous solutions. The concentration of hydroxide as activator solution plays an important role in the geopolymerization process. The present study examined the use of geopolymer materials, obtained in reaction of geopolymerizations of metakaolin as precursor activated with NaOH concentration 2.0, 4.0, 6.0 and 8.0 mol/dm3 for removal of cadmium ions from aqueous solutions. The structure and properties of the obtained geopolymer samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflection infrared spectroscopy (DRIFTS). To investigate the surface charge of geopolymers the zeta potential measurements were performed. Batch adsorption experiments conducted at room temperature (23 ± 1 °C) showed that the adsorption pattern followed the Freundlich isotherm model. The maximum removal of cadmium obtained from batch studies was 84.1% for GP6M at pH ≈ 6.7. The results generally showed that geopolymer samples could be considered as a potential adsorbent for cadmium removal from aqueous solutions. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Journal of Inorganic and Organometallic Polymers and Materials",
title = "The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water",
volume = "30",
number = "2",
pages = "554-563",
doi = "10.1007/s10904-019-01215-y"
}
Mladenović, N., Kljajević, L. M., Nenadović, S. S., Ivanović, M. D., Čalija, B., Gulicovski, J. J.,& Trivunac, K. V. (2020). The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water.
Journal of Inorganic and Organometallic Polymers and Materials, 30(2), 554-563.
https://doi.org/10.1007/s10904-019-01215-y
Mladenović N, Kljajević LM, Nenadović SS, Ivanović MD, Čalija B, Gulicovski JJ, Trivunac KV. The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water. Journal of Inorganic and Organometallic Polymers and Materials. 2020;30(2):554-563
Mladenović Nataša, Kljajević Ljiljana M., Nenadović Snežana S., Ivanović Marija D., Čalija Bojan, Gulicovski Jelena J., Trivunac Katarina V., "The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water" Journal of Inorganic and Organometallic Polymers and Materials, 30, no. 2 (2020):554-563,
https://doi.org/10.1007/s10904-019-01215-y .
6
3
3

Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC

Gulicovski, Jelena J.; Nenadović, Snežana S.; Kljajević, Ljiljana M.; Mirković, Miljana M.; Nišavić, Marija; Kragović, Milan M.; Stojmenović, Marija

(2020)

TY  - JOUR
AU  - Gulicovski, Jelena J.
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Mirković, Miljana M.
AU  - Nišavić, Marija
AU  - Kragović, Milan M.
AU  - Stojmenović, Marija
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8480
AB  - As a material for application in the life sciences, a new composite material, geopolymer/CeO2 (GP_CeO2), was synthesized as a potential low-cost solid electrolyte for application in solid oxide fuel cells operating in intermediate temperature (IT-SOFC). The new materials were obtained from alkali-activated metakaolin (calcined clay) in the presence of CeO2 powders (x = 10%). Besides the commercial CeO2 powder, as a source of ceria, two differently synthesized CeO2 powders also were used: CeO2 synthesized by modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). The structural, morphological, and electrical properties of pure and GP_CeO2-type samples were investigated by X-ray powder diffraction (XRPD), Fourier transform infrared (FTIR), BET, differential thermal and thermogravimetric analysis (DTA/TGA), scanning electron microscopy (FE-SEM), energy dispersive spectrometer (EDS), and method complex impedance (EIS). XRPD and matrix-assisted laser desorption and ionization time-of-flight (MALDI-TOF) analysis confirmed the formation of solid phase CeO2. The BET, DTA/TGA, FE-SEM, and EDS results indicated that particles of CeO2 were stabile interconnected and form a continuous conductive path, which was confirmed by the EIS method. The highest conductivity of 1.86 × 10−2 Ω−1 cm−1 was obtained for the sample GP_CeO2_MGNP at 700 °C. The corresponding value of activation energy for conductivity was 0.26 eV in the temperature range 500–700 °C.
T2  - Polymers
T1  - Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC
VL  - 12
IS  - 1
SP  - 248
DO  - 10.3390/polym12010248
ER  - 
@article{
author = "Gulicovski, Jelena J. and Nenadović, Snežana S. and Kljajević, Ljiljana M. and Mirković, Miljana M. and Nišavić, Marija and Kragović, Milan M. and Stojmenović, Marija",
year = "2020",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8480",
abstract = "As a material for application in the life sciences, a new composite material, geopolymer/CeO2 (GP_CeO2), was synthesized as a potential low-cost solid electrolyte for application in solid oxide fuel cells operating in intermediate temperature (IT-SOFC). The new materials were obtained from alkali-activated metakaolin (calcined clay) in the presence of CeO2 powders (x = 10%). Besides the commercial CeO2 powder, as a source of ceria, two differently synthesized CeO2 powders also were used: CeO2 synthesized by modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). The structural, morphological, and electrical properties of pure and GP_CeO2-type samples were investigated by X-ray powder diffraction (XRPD), Fourier transform infrared (FTIR), BET, differential thermal and thermogravimetric analysis (DTA/TGA), scanning electron microscopy (FE-SEM), energy dispersive spectrometer (EDS), and method complex impedance (EIS). XRPD and matrix-assisted laser desorption and ionization time-of-flight (MALDI-TOF) analysis confirmed the formation of solid phase CeO2. The BET, DTA/TGA, FE-SEM, and EDS results indicated that particles of CeO2 were stabile interconnected and form a continuous conductive path, which was confirmed by the EIS method. The highest conductivity of 1.86 × 10−2 Ω−1 cm−1 was obtained for the sample GP_CeO2_MGNP at 700 °C. The corresponding value of activation energy for conductivity was 0.26 eV in the temperature range 500–700 °C.",
journal = "Polymers",
title = "Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC",
volume = "12",
number = "1",
pages = "248",
doi = "10.3390/polym12010248"
}
Gulicovski, J. J., Nenadović, S. S., Kljajević, L. M., Mirković, M. M., Nišavić, M., Kragović, M. M.,& Stojmenović, M. (2020). Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC.
Polymers, 12(1), 248.
https://doi.org/10.3390/polym12010248
Gulicovski JJ, Nenadović SS, Kljajević LM, Mirković MM, Nišavić M, Kragović MM, Stojmenović M. Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC. Polymers. 2020;12(1):248
Gulicovski Jelena J., Nenadović Snežana S., Kljajević Ljiljana M., Mirković Miljana M., Nišavić Marija, Kragović Milan M., Stojmenović Marija, "Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC" Polymers, 12, no. 1 (2020):248,
https://doi.org/10.3390/polym12010248 .
4
2
4

Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2

Bošković, Ivana V.; Vukčević, Mira; Nenadović, Snežana S.; Mirković, Miljana M.; Stojmenović, Marija; Pavlović, Vladimir B.; Kljajević, Ljiljana M.

(2019)

TY  - JOUR
AU  - Bošković, Ivana V.
AU  - Vukčević, Mira
AU  - Nenadović, Snežana S.
AU  - Mirković, Miljana M.
AU  - Stojmenović, Marija
AU  - Pavlović, Vladimir B.
AU  - Kljajević, Ljiljana M.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8351
AB  - Geopolymers are an emerging class of materials that offer an alternative to the Portland cement as the binder of structural concrete. One of the advantages is that the primary source of their production is waste alumosilicate materials from different industries. One of the key issues in geopolymer synthesis is the low level of mechanical properties due to porosity as well as the high activity of conductivity carriers. It can often lead to limited application possibilities, so the objective is to obtain an enhanced strength as well as decreased cracking tendency through microstructure modification. The introduction of Ca(OH)2, under certain pH conditions could lead to the filling-the-pores process and improving the mechanical properties. The aim was to understand the role that calcium plays in the geopolymer synthesis, and to define which reaction prevails under the synthesis conditions: formation of geopolymer gel or calcium silicate hydrate that contains aluminum substitution (CASH). The synthesis was performed with different raw materials (with or without red mud) and different alkalinity conditions. Ca(OH)2 was the obligatory supplement to both of the mixtures. Different techniques were performed for the testing of reaction products, as well as to define the microstructural changes as the generator of improved mechanical properties and changed electrical conductivity. The characteristics of the geopolymer's macrostructure were defined by means of an SEM analysis. Compressive strength and electrical conductivity are among the investigated product's properties. X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FTIR) were used for the identification of various crystalline phases and an amorphous phase. ©, Institute of Metals and Technology, Ljubljana, Slovenia.
T2  - Materiali in tehnologije
T1  - Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2
VL  - 53
IS  - 3
SP  - 341
EP  - 348
DO  - 10.17222/mit.2018.130
ER  - 
@article{
author = "Bošković, Ivana V. and Vukčević, Mira and Nenadović, Snežana S. and Mirković, Miljana M. and Stojmenović, Marija and Pavlović, Vladimir B. and Kljajević, Ljiljana M.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8351",
abstract = "Geopolymers are an emerging class of materials that offer an alternative to the Portland cement as the binder of structural concrete. One of the advantages is that the primary source of their production is waste alumosilicate materials from different industries. One of the key issues in geopolymer synthesis is the low level of mechanical properties due to porosity as well as the high activity of conductivity carriers. It can often lead to limited application possibilities, so the objective is to obtain an enhanced strength as well as decreased cracking tendency through microstructure modification. The introduction of Ca(OH)2, under certain pH conditions could lead to the filling-the-pores process and improving the mechanical properties. The aim was to understand the role that calcium plays in the geopolymer synthesis, and to define which reaction prevails under the synthesis conditions: formation of geopolymer gel or calcium silicate hydrate that contains aluminum substitution (CASH). The synthesis was performed with different raw materials (with or without red mud) and different alkalinity conditions. Ca(OH)2 was the obligatory supplement to both of the mixtures. Different techniques were performed for the testing of reaction products, as well as to define the microstructural changes as the generator of improved mechanical properties and changed electrical conductivity. The characteristics of the geopolymer's macrostructure were defined by means of an SEM analysis. Compressive strength and electrical conductivity are among the investigated product's properties. X-ray diffraction (XRD) and Fourier transform infra-red spectroscopy (FTIR) were used for the identification of various crystalline phases and an amorphous phase. ©, Institute of Metals and Technology, Ljubljana, Slovenia.",
journal = "Materiali in tehnologije",
title = "Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2",
volume = "53",
number = "3",
pages = "341-348",
doi = "10.17222/mit.2018.130"
}
Bošković, I. V., Vukčević, M., Nenadović, S. S., Mirković, M. M., Stojmenović, M., Pavlović, V. B.,& Kljajević, L. M. (2019). Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2.
Materiali in tehnologije, 53(3), 341-348.
https://doi.org/10.17222/mit.2018.130
Bošković IV, Vukčević M, Nenadović SS, Mirković MM, Stojmenović M, Pavlović VB, Kljajević LM. Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2. Materiali in tehnologije. 2019;53(3):341-348
Bošković Ivana V., Vukčević Mira, Nenadović Snežana S., Mirković Miljana M., Stojmenović Marija, Pavlović Vladimir B., Kljajević Ljiljana M., "Characterization of red mud/metakaolin-based geopolymers as modified by Ca(OH)2" Materiali in tehnologije, 53, no. 3 (2019):341-348,
https://doi.org/10.17222/mit.2018.130 .
2
1
2

Structural and electrical properties of geopolymer materials based on different precursors (kaolin, bentonite and diatomite)

Kljajević, Ljiljana M.; Melichova, Zuzana; Stojmenović, Marija; Todorović, Bratislav Ž.; Pavlović, Vladimir B.; Čitaković, Nada; Nenadović, Snežana S.

(Skopje : Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril & Methodius University, 2019)

TY  - JOUR
AU  - Kljajević, Ljiljana M.
AU  - Melichova, Zuzana
AU  - Stojmenović, Marija
AU  - Todorović, Bratislav Ž.
AU  - Pavlović, Vladimir B.
AU  - Čitaković, Nada
AU  - Nenadović, Snežana S.
PY  - 2019
UR  - https://mjcce.org.mk/index.php/MJCCE/article/view/1678
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8828
AB  - Geopolymers (GP) were successfully synthesized from metabentonite (MB), metadiatomite (MD) and metakaolinite (MK). Characterization of their phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods. A SEM micrograph of GPMD shows a homogeneous surface with some longitudinal cavities in the gel, and it is significantly different from the micrographs of the other two geopolymer samples, GPMB and GPMK. A considerable amount of unreacted particles, as well as the presence of pores in the geopolymer matrix of GPMK and GPMD, indicate an incomplete reaction in the system. Aluminosilicate inorganic polymers, geopolymers, are quasi solid electrolytes which possess a high electrical conductivity at room temperature in relation to materials of similar chemical composition. The highest conductivity was found for the sample obtained from GPMK, amounting to 2.14 × 10–2 Ω–1cm–1at 700 ºC. The corresponding activation energies of conductivity for this sample amounted to 0.33 eV in the temperature range of 500–700 ºC. The geopolymer synthesized from metakaolin has good ionic conductivity values, which recommends it for use as an alternative material for an SOFC (Solid Oxide Fuel Cell).
PB  - Skopje : Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril & Methodius University
T2  - Macedonian Journal of Chemistry and Chemical Engineering
T1  - Structural and electrical properties of geopolymer materials based on different precursors (kaolin, bentonite and diatomite)
VL  - 38
IS  - 2
SP  - 283
EP  - 292
DO  - 10.20450/mjcce.2019.1678
ER  - 
@article{
author = "Kljajević, Ljiljana M. and Melichova, Zuzana and Stojmenović, Marija and Todorović, Bratislav Ž. and Pavlović, Vladimir B. and Čitaković, Nada and Nenadović, Snežana S.",
year = "2019",
url = "https://mjcce.org.mk/index.php/MJCCE/article/view/1678, https://vinar.vin.bg.ac.rs/handle/123456789/8828",
abstract = "Geopolymers (GP) were successfully synthesized from metabentonite (MB), metadiatomite (MD) and metakaolinite (MK). Characterization of their phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods. A SEM micrograph of GPMD shows a homogeneous surface with some longitudinal cavities in the gel, and it is significantly different from the micrographs of the other two geopolymer samples, GPMB and GPMK. A considerable amount of unreacted particles, as well as the presence of pores in the geopolymer matrix of GPMK and GPMD, indicate an incomplete reaction in the system. Aluminosilicate inorganic polymers, geopolymers, are quasi solid electrolytes which possess a high electrical conductivity at room temperature in relation to materials of similar chemical composition. The highest conductivity was found for the sample obtained from GPMK, amounting to 2.14 × 10–2 Ω–1cm–1at 700 ºC. The corresponding activation energies of conductivity for this sample amounted to 0.33 eV in the temperature range of 500–700 ºC. The geopolymer synthesized from metakaolin has good ionic conductivity values, which recommends it for use as an alternative material for an SOFC (Solid Oxide Fuel Cell).",
publisher = "Skopje : Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril & Methodius University",
journal = "Macedonian Journal of Chemistry and Chemical Engineering",
title = "Structural and electrical properties of geopolymer materials based on different precursors (kaolin, bentonite and diatomite)",
volume = "38",
number = "2",
pages = "283-292",
doi = "10.20450/mjcce.2019.1678"
}
Kljajević, L. M., Melichova, Z., Stojmenović, M., Todorović, B. Ž., Pavlović, V. B., Čitaković, N.,& Nenadović, S. S. (2019). Structural and electrical properties of geopolymer materials based on different precursors (kaolin, bentonite and diatomite).
Macedonian Journal of Chemistry and Chemical Engineering
Skopje : Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril & Methodius University., 38(2), 283-292.
https://doi.org/10.20450/mjcce.2019.1678
Kljajević LM, Melichova Z, Stojmenović M, Todorović BŽ, Pavlović VB, Čitaković N, Nenadović SS. Structural and electrical properties of geopolymer materials based on different precursors (kaolin, bentonite and diatomite). Macedonian Journal of Chemistry and Chemical Engineering. 2019;38(2):283-292
Kljajević Ljiljana M., Melichova Zuzana, Stojmenović Marija, Todorović Bratislav Ž., Pavlović Vladimir B., Čitaković Nada, Nenadović Snežana S., "Structural and electrical properties of geopolymer materials based on different precursors (kaolin, bentonite and diatomite)" Macedonian Journal of Chemistry and Chemical Engineering, 38, no. 2 (2019):283-292,
https://doi.org/10.20450/mjcce.2019.1678 .
1
1
1

The influence of alumino-silicate matrix composition on surface hydrophobic properties

Kljajević, Ljiljana M.; Melichova, Zuzana; Kisić, Danilo; Nenadović, Miloš; Todorović, Bratislav Ž.; Pavlović, Vladimir B.; Nenadović, Snežana S.

(2019)

TY  - JOUR
AU  - Kljajević, Ljiljana M.
AU  - Melichova, Zuzana
AU  - Kisić, Danilo
AU  - Nenadović, Miloš
AU  - Todorović, Bratislav Ž.
AU  - Pavlović, Vladimir B.
AU  - Nenadović, Snežana S.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8440
AB  - The purpose of this investigation is to investigate the hydrophobicity of geopolymers, new alumino-silicate materials and the influence of Si/Al ratio on their surface properties. Contact angle measurement (CAM) as reliable indicator of hydrophobicity was determined for synthesized geopolymers using water and ethylene-glycol as reference liquids. Geopolymers were synthesized from various precursors: Kaolin, bentonite and diatomite. Characterization of phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods. Contact angle measurements confirmed that the geopolymers synthesized from metakaolin are the most porous, which can be explained by the smallest Si/Al ratio. The maximum value of contact angle and free surface energy (110.2 mJ/m2) has been achieved for geopolymer synthesized by diatoms (GPMD). SEM micrograph of GPMD shows a homogeneous surface with some longitudinal cavities in the gel and is significantly different from the micrographs of other two geopolymer samples, GPMB and GPMK. © 2018 Authors.
T2  - Science of Sintering
T1  - The influence of alumino-silicate matrix composition on surface hydrophobic properties
VL  - 51
IS  - 2
SP  - 163
EP  - 173
DO  - 10.2298/SOS1902163K
ER  - 
@article{
author = "Kljajević, Ljiljana M. and Melichova, Zuzana and Kisić, Danilo and Nenadović, Miloš and Todorović, Bratislav Ž. and Pavlović, Vladimir B. and Nenadović, Snežana S.",
year = "2019",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/8440",
abstract = "The purpose of this investigation is to investigate the hydrophobicity of geopolymers, new alumino-silicate materials and the influence of Si/Al ratio on their surface properties. Contact angle measurement (CAM) as reliable indicator of hydrophobicity was determined for synthesized geopolymers using water and ethylene-glycol as reference liquids. Geopolymers were synthesized from various precursors: Kaolin, bentonite and diatomite. Characterization of phase structure and microstructure was performed by XRD, FTIR, SEM/EDX methods. Contact angle measurements confirmed that the geopolymers synthesized from metakaolin are the most porous, which can be explained by the smallest Si/Al ratio. The maximum value of contact angle and free surface energy (110.2 mJ/m2) has been achieved for geopolymer synthesized by diatoms (GPMD). SEM micrograph of GPMD shows a homogeneous surface with some longitudinal cavities in the gel and is significantly different from the micrographs of other two geopolymer samples, GPMB and GPMK. © 2018 Authors.",
journal = "Science of Sintering",
title = "The influence of alumino-silicate matrix composition on surface hydrophobic properties",
volume = "51",
number = "2",
pages = "163-173",
doi = "10.2298/SOS1902163K"
}
Kljajević, L. M., Melichova, Z., Kisić, D., Nenadović, M., Todorović, B. Ž., Pavlović, V. B.,& Nenadović, S. S. (2019). The influence of alumino-silicate matrix composition on surface hydrophobic properties.
Science of Sintering, 51(2), 163-173.
https://doi.org/10.2298/SOS1902163K
Kljajević LM, Melichova Z, Kisić D, Nenadović M, Todorović BŽ, Pavlović VB, Nenadović SS. The influence of alumino-silicate matrix composition on surface hydrophobic properties. Science of Sintering. 2019;51(2):163-173
Kljajević Ljiljana M., Melichova Zuzana, Kisić Danilo, Nenadović Miloš, Todorović Bratislav Ž., Pavlović Vladimir B., Nenadović Snežana S., "The influence of alumino-silicate matrix composition on surface hydrophobic properties" Science of Sintering, 51, no. 2 (2019):163-173,
https://doi.org/10.2298/SOS1902163K .
3
4
1

Radiological and physicochemical properties of red mud based geopolymers

Bošković, Ivana V.; Nenadović, Snežana S.; Kljajević, Ljiljana M.; Vukanac, Ivana; Stanković, Nadežda; Lukovic, Jelena M.; Vukčević, Mira

(2018)

TY  - JOUR
AU  - Bošković, Ivana V.
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Vukanac, Ivana
AU  - Stanković, Nadežda
AU  - Lukovic, Jelena M.
AU  - Vukčević, Mira
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=1451-39941802188B
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7881
AB  - A significant amount of red mud generated as a by-product of the Bayer process in the aluminum industry may cause environmental problems if appropriate treatment is not carried out. The presented research dealt with the possibility of application of red mud as a pigment or as raw material for use in the construction material industry. In relation to the aim of this work, the physicochemical characterization was performed and the natural radioactivity of red mud as an industrial waste and a geopolymer sample based on it was determined. The presented research is a contribution to the potential solution for environmental protection through the synthesis of possible construction material based on red mud. The radiological hazard orginating from226Ra,232Th, and40K in the samples was assesed throught the absorbed dose rate and the annual effective dose rate, calculated in accordance with the UNSCEAR 2010 report. Physicochemical characterization of all samples was conducted using X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. © 2018, Vinca Inst Nuclear Sci. All rights reserved.
T2  - Nuclear Technology and Radiation Protection
T1  - Radiological and physicochemical properties of red mud based geopolymers
VL  - 33
IS  - 2
SP  - 188
EP  - 194
DO  - 10.2298/NTRP1802188B
ER  - 
@article{
author = "Bošković, Ivana V. and Nenadović, Snežana S. and Kljajević, Ljiljana M. and Vukanac, Ivana and Stanković, Nadežda and Lukovic, Jelena M. and Vukčević, Mira",
year = "2018",
url = "http://www.doiserbia.nb.rs/Article.aspx?ID=1451-39941802188B, http://vinar.vin.bg.ac.rs/handle/123456789/7881",
abstract = "A significant amount of red mud generated as a by-product of the Bayer process in the aluminum industry may cause environmental problems if appropriate treatment is not carried out. The presented research dealt with the possibility of application of red mud as a pigment or as raw material for use in the construction material industry. In relation to the aim of this work, the physicochemical characterization was performed and the natural radioactivity of red mud as an industrial waste and a geopolymer sample based on it was determined. The presented research is a contribution to the potential solution for environmental protection through the synthesis of possible construction material based on red mud. The radiological hazard orginating from226Ra,232Th, and40K in the samples was assesed throught the absorbed dose rate and the annual effective dose rate, calculated in accordance with the UNSCEAR 2010 report. Physicochemical characterization of all samples was conducted using X-ray diffraction and diffuse reflectance infrared Fourier transform spectroscopy. © 2018, Vinca Inst Nuclear Sci. All rights reserved.",
journal = "Nuclear Technology and Radiation Protection",
title = "Radiological and physicochemical properties of red mud based geopolymers",
volume = "33",
number = "2",
pages = "188-194",
doi = "10.2298/NTRP1802188B"
}
Bošković, I. V., Nenadović, S. S., Kljajević, L. M., Vukanac, I., Stanković, N., Lukovic, J. M.,& Vukčević, M. (2018). Radiological and physicochemical properties of red mud based geopolymers.
Nuclear Technology and Radiation Protection, 33(2), 188-194.
https://doi.org/10.2298/NTRP1802188B
Bošković IV, Nenadović SS, Kljajević LM, Vukanac I, Stanković N, Lukovic JM, Vukčević M. Radiological and physicochemical properties of red mud based geopolymers. Nuclear Technology and Radiation Protection. 2018;33(2):188-194
Bošković Ivana V., Nenadović Snežana S., Kljajević Ljiljana M., Vukanac Ivana, Stanković Nadežda, Lukovic Jelena M., Vukčević Mira, "Radiological and physicochemical properties of red mud based geopolymers" Nuclear Technology and Radiation Protection, 33, no. 2 (2018):188-194,
https://doi.org/10.2298/NTRP1802188B .
2
2
2

Physicochemical and radiological characterization of kaolin and its polymerization products

Ivanović, Marija D.; Kljajević, Ljiljana M.; Nenadović, Miloš; Bundaleski, Nenad; Vukanac, Ivana; Todorović, Bratislav Ž.; Nenadović, Snežana S.

(2018)

TY  - JOUR
AU  - Ivanović, Marija D.
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Miloš
AU  - Bundaleski, Nenad
AU  - Vukanac, Ivana
AU  - Todorović, Bratislav Ž.
AU  - Nenadović, Snežana S.
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7706
UR  - http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2219
AB  - The aim of this study was determination of physical-chemical and radiological characteristics of kaolin and products of alkali-activated thermally treated kaolin (geopolymer). Also, the objective of presented research was to investigate the possibility of kaolin application as a pigment or as a raw material for obtaining geopolymer materials as a relatively new ones in a building material industry. Physicochemical characterization of one set of samples was conducted using X-ray diffraction (XRD), Fourier transform infra-red (FTIR) and X-ray photoelectron spectroscopy (XPS). Activity concentration of naturally occurring radionuclides in kaolin, metakaolin and geopolymer were determined. The absorbed dose rate (D) and the annual effective dose rate (EDR), calculated in accordance with the UNSCEAR 2000 report, are also presented in this paper. Kaolin was heat-treated on 750oC and specific activity of natural radionuclide in metakaolin increased up to 1.6, while measured specific activities in geopolymer were the lowest.
T2  - Materiales de Construccion
T1  - Physicochemical and radiological characterization of kaolin and its polymerization products
VL  - 68
IS  - 330
DO  - 10.3989/mc.2018.00517
ER  - 
@article{
author = "Ivanović, Marija D. and Kljajević, Ljiljana M. and Nenadović, Miloš and Bundaleski, Nenad and Vukanac, Ivana and Todorović, Bratislav Ž. and Nenadović, Snežana S.",
year = "2018",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/7706, http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/2219",
abstract = "The aim of this study was determination of physical-chemical and radiological characteristics of kaolin and products of alkali-activated thermally treated kaolin (geopolymer). Also, the objective of presented research was to investigate the possibility of kaolin application as a pigment or as a raw material for obtaining geopolymer materials as a relatively new ones in a building material industry. Physicochemical characterization of one set of samples was conducted using X-ray diffraction (XRD), Fourier transform infra-red (FTIR) and X-ray photoelectron spectroscopy (XPS). Activity concentration of naturally occurring radionuclides in kaolin, metakaolin and geopolymer were determined. The absorbed dose rate (D) and the annual effective dose rate (EDR), calculated in accordance with the UNSCEAR 2000 report, are also presented in this paper. Kaolin was heat-treated on 750oC and specific activity of natural radionuclide in metakaolin increased up to 1.6, while measured specific activities in geopolymer were the lowest.",
journal = "Materiales de Construccion",
title = "Physicochemical and radiological characterization of kaolin and its polymerization products",
volume = "68",
number = "330",
doi = "10.3989/mc.2018.00517"
}
Ivanović, M. D., Kljajević, L. M., Nenadović, M., Bundaleski, N., Vukanac, I., Todorović, B. Ž.,& Nenadović, S. S. (2018). Physicochemical and radiological characterization of kaolin and its polymerization products.
Materiales de Construccion, 68(330).
https://doi.org/10.3989/mc.2018.00517
Ivanović MD, Kljajević LM, Nenadović M, Bundaleski N, Vukanac I, Todorović BŽ, Nenadović SS. Physicochemical and radiological characterization of kaolin and its polymerization products. Materiales de Construccion. 2018;68(330)
Ivanović Marija D., Kljajević Ljiljana M., Nenadović Miloš, Bundaleski Nenad, Vukanac Ivana, Todorović Bratislav Ž., Nenadović Snežana S., "Physicochemical and radiological characterization of kaolin and its polymerization products" Materiales de Construccion, 68, no. 330 (2018),
https://doi.org/10.3989/mc.2018.00517 .
2
2
3

The Effect of Alkaline Activator Molarity and Aging Time on the Structure of Inorganic Polymer

Ivanović, Marija D.; Kljajević, Ljiljana M.; Gulicovski, Jelena J.; Todorović, Bratislav Ž.; Egelja, Adela; Pavlović, Vladimir B.; Nenadović, Snežana S.

(Belgrade : Serbian Academy of Sciences and Arts, 2018)

TY  - CONF
AU  - Ivanović, Marija D.
AU  - Kljajević, Ljiljana M.
AU  - Gulicovski, Jelena J.
AU  - Todorović, Bratislav Ž.
AU  - Egelja, Adela
AU  - Pavlović, Vladimir B.
AU  - Nenadović, Snežana S.
PY  - 2018
UR  - http://dais.sanu.ac.rs/123456789/3630
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8730
AB  - The goal of this research was to produce an environmental friendly, energy saving inorganic polymer using a metakaolin as a precursor. The clean technology which conserve the natural environment was employed for the production of these materials. The used kaolinite is clay obtained from Rudovci, Lazarevac, Serbia. Physicochemical properties of kaolin were investigated in previous work by Nenadović et al. [1]. Metakaolin (MK) was prepared by calcining kaolinite at 750 °C for 1 h. The influence of alkali activation, i.e. different concentration of NaOH as a component of alkali activator mixture on the process of polymerization of metakaolin is investigated. The alkaline solution was prepared from sodium silicate and 2M, 4M, 6M and 8 M NaOH (analytical grade) (volume ratio Na2SiO3/NaOH = 1.6). The inorganic polymer (IP) samples were formed from metakaolin and the four different alkaline solution (solid/liquid ratio was about 1), which were mixed for 15 min and then left at room temperature for one day. Finally, the mixture was kept in a sample drying oven for 2 days at 60 °C. Process of aging time of inorganic polymer samples at 7th, 14th, 21st and 28th days is followed by some analytical methods (XRD, FTIR). X-ray diffraction (XRD) and Fourier transformation infrared spectroscopy (FTIR) were used for characterization of metakaolin and metakaolin based inorganic polymers. After 28th days when the aging time were finished, on the surface of the samples were used scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS). XRD analysis almost of all inorganic polymer samples revealed their amorphouslike structure with the position of an amorphous halo in the range 18°-32°, which indicates short range ordering of the reference sample with crystalline admixture of SiO2 (α-quartz, ICSD 89). The FTIR spectra of all samples shows a strong peak at ∼1000 cm−1 which is associated with Si–O–Si asymmetric stretching vibrations and is the finger print of the geopolymerization [2,3]. The FT-IR results show a shift of the Si-O or Si-O-X bands as the molarity of activator increasing during polymerization process, where X can be Si or Al. Both methods and XRD, as well as FTIR, show greater sensitivity to monitoring the effects of molarity, than the aging time within the same molarity to structural changes in inorganic polymer. SEM micrographs (Fig.1) showed a denser matrix, and a lower content of unreacted metakaolin particles due to increasing of molarity of NaOH. Structural reorganization of inorganic polymer samples occurs during the curing or aging in accordance with a polymerization mechanism.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
T1  - The Effect of Alkaline Activator Molarity and Aging Time on the Structure of Inorganic Polymer
SP  - 204
EP  - 206
ER  - 
@conference{
author = "Ivanović, Marija D. and Kljajević, Ljiljana M. and Gulicovski, Jelena J. and Todorović, Bratislav Ž. and Egelja, Adela and Pavlović, Vladimir B. and Nenadović, Snežana S.",
year = "2018",
url = "http://dais.sanu.ac.rs/123456789/3630, http://vinar.vin.bg.ac.rs/handle/123456789/8730",
abstract = "The goal of this research was to produce an environmental friendly, energy saving inorganic polymer using a metakaolin as a precursor. The clean technology which conserve the natural environment was employed for the production of these materials. The used kaolinite is clay obtained from Rudovci, Lazarevac, Serbia. Physicochemical properties of kaolin were investigated in previous work by Nenadović et al. [1]. Metakaolin (MK) was prepared by calcining kaolinite at 750 °C for 1 h. The influence of alkali activation, i.e. different concentration of NaOH as a component of alkali activator mixture on the process of polymerization of metakaolin is investigated. The alkaline solution was prepared from sodium silicate and 2M, 4M, 6M and 8 M NaOH (analytical grade) (volume ratio Na2SiO3/NaOH = 1.6). The inorganic polymer (IP) samples were formed from metakaolin and the four different alkaline solution (solid/liquid ratio was about 1), which were mixed for 15 min and then left at room temperature for one day. Finally, the mixture was kept in a sample drying oven for 2 days at 60 °C. Process of aging time of inorganic polymer samples at 7th, 14th, 21st and 28th days is followed by some analytical methods (XRD, FTIR). X-ray diffraction (XRD) and Fourier transformation infrared spectroscopy (FTIR) were used for characterization of metakaolin and metakaolin based inorganic polymers. After 28th days when the aging time were finished, on the surface of the samples were used scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS). XRD analysis almost of all inorganic polymer samples revealed their amorphouslike structure with the position of an amorphous halo in the range 18°-32°, which indicates short range ordering of the reference sample with crystalline admixture of SiO2 (α-quartz, ICSD 89). The FTIR spectra of all samples shows a strong peak at ∼1000 cm−1 which is associated with Si–O–Si asymmetric stretching vibrations and is the finger print of the geopolymerization [2,3]. The FT-IR results show a shift of the Si-O or Si-O-X bands as the molarity of activator increasing during polymerization process, where X can be Si or Al. Both methods and XRD, as well as FTIR, show greater sensitivity to monitoring the effects of molarity, than the aging time within the same molarity to structural changes in inorganic polymer. SEM micrographs (Fig.1) showed a denser matrix, and a lower content of unreacted metakaolin particles due to increasing of molarity of NaOH. Structural reorganization of inorganic polymer samples occurs during the curing or aging in accordance with a polymerization mechanism.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia",
title = "The Effect of Alkaline Activator Molarity and Aging Time on the Structure of Inorganic Polymer",
pages = "204-206"
}
Ivanović, M. D., Kljajević, L. M., Gulicovski, J. J., Todorović, B. Ž., Egelja, A., Pavlović, V. B.,& Nenadović, S. S. (2018). The Effect of Alkaline Activator Molarity and Aging Time on the Structure of Inorganic Polymer.
Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia
Belgrade : Serbian Academy of Sciences and Arts., 204-206.
Ivanović MD, Kljajević LM, Gulicovski JJ, Todorović BŽ, Egelja A, Pavlović VB, Nenadović SS. The Effect of Alkaline Activator Molarity and Aging Time on the Structure of Inorganic Polymer. Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia. 2018;:204-206
Ivanović Marija D., Kljajević Ljiljana M., Gulicovski Jelena J., Todorović Bratislav Ž., Egelja Adela, Pavlović Vladimir B., Nenadović Snežana S., "The Effect of Alkaline Activator Molarity and Aging Time on the Structure of Inorganic Polymer" Program and Book of Abstracts / First International Conference on Electron Microscopy of Nanostructures ELMINA 2018, August 27-29, 2018, Belgrade, Serbia (2018):204-206

Physicochemical, Mineralogical and Radiological Properties of Red Mud Samples as Secondary Raw Materials

Nenadović, Snežana S.; Mucsi, Gabor; Kljajević, Ljiljana M.; Mirković, Miljana M.; Nenadović, Miloš; Kristaly, Ferenc; Vukanac, Ivana

(2017)

TY  - JOUR
AU  - Nenadović, Snežana S.
AU  - Mucsi, Gabor
AU  - Kljajević, Ljiljana M.
AU  - Mirković, Miljana M.
AU  - Nenadović, Miloš
AU  - Kristaly, Ferenc
AU  - Vukanac, Ivana
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1840
AB  - The main goal of the presented research was the preliminary investigation of possibility of red mud - Hungarian dump sites Almasfuzito (sample A) and Ajka (sample B) - application as a pigment or as a raw material for use in the construction materials industry. Also, the aim of this work was the characterization of red mud as industrial waste generated by the Bayer process in the aluminum industry - which may cause environmental problems if appropriate treatment is not carried out. The main mineral phases of both red mud are hematite (Fe2O3), calcite (CaCO3), gibbsite (Al(OH)(3)) and they consists of particles of median particle size 2.1 mu m (sample A) and 2.5 mu m (sample B) and have a characteristic red color, which was the reason for its testing for use in the industry of building materials as a pigment for standard concrete mixtures. The radionuclides content in the samples was determined by gamma spectrometry, and the radiological hazards originating from U-238, Th-232, K-40 in the samples, were assessed through the radium equivalent activity, and the external radiation hazard index. The absorbed dose rate and the annual effective dose were calculated in accordance with the UNSCEAR 2010 report and the results are presented in this paper.
T2  - Nuclear technology and radiation protection
T1  - Physicochemical, Mineralogical and Radiological Properties of Red Mud Samples as Secondary Raw Materials
VL  - 32
IS  - 3
SP  - 261
EP  - 266
DO  - 10.2298/NTRP1703261N
ER  - 
@article{
author = "Nenadović, Snežana S. and Mucsi, Gabor and Kljajević, Ljiljana M. and Mirković, Miljana M. and Nenadović, Miloš and Kristaly, Ferenc and Vukanac, Ivana",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1840",
abstract = "The main goal of the presented research was the preliminary investigation of possibility of red mud - Hungarian dump sites Almasfuzito (sample A) and Ajka (sample B) - application as a pigment or as a raw material for use in the construction materials industry. Also, the aim of this work was the characterization of red mud as industrial waste generated by the Bayer process in the aluminum industry - which may cause environmental problems if appropriate treatment is not carried out. The main mineral phases of both red mud are hematite (Fe2O3), calcite (CaCO3), gibbsite (Al(OH)(3)) and they consists of particles of median particle size 2.1 mu m (sample A) and 2.5 mu m (sample B) and have a characteristic red color, which was the reason for its testing for use in the industry of building materials as a pigment for standard concrete mixtures. The radionuclides content in the samples was determined by gamma spectrometry, and the radiological hazards originating from U-238, Th-232, K-40 in the samples, were assessed through the radium equivalent activity, and the external radiation hazard index. The absorbed dose rate and the annual effective dose were calculated in accordance with the UNSCEAR 2010 report and the results are presented in this paper.",
journal = "Nuclear technology and radiation protection",
title = "Physicochemical, Mineralogical and Radiological Properties of Red Mud Samples as Secondary Raw Materials",
volume = "32",
number = "3",
pages = "261-266",
doi = "10.2298/NTRP1703261N"
}
Nenadović, S. S., Mucsi, G., Kljajević, L. M., Mirković, M. M., Nenadović, M., Kristaly, F.,& Vukanac, I. (2017). Physicochemical, Mineralogical and Radiological Properties of Red Mud Samples as Secondary Raw Materials.
Nuclear technology and radiation protection, 32(3), 261-266.
https://doi.org/10.2298/NTRP1703261N
Nenadović SS, Mucsi G, Kljajević LM, Mirković MM, Nenadović M, Kristaly F, Vukanac I. Physicochemical, Mineralogical and Radiological Properties of Red Mud Samples as Secondary Raw Materials. Nuclear technology and radiation protection. 2017;32(3):261-266
Nenadović Snežana S., Mucsi Gabor, Kljajević Ljiljana M., Mirković Miljana M., Nenadović Miloš, Kristaly Ferenc, Vukanac Ivana, "Physicochemical, Mineralogical and Radiological Properties of Red Mud Samples as Secondary Raw Materials" Nuclear technology and radiation protection, 32, no. 3 (2017):261-266,
https://doi.org/10.2298/NTRP1703261N .
8
7
9

Structure analysis of geopolymers synthesized from clay originated from Serbia

Nenadović, Snežana S.; Kljajević, Ljiljana M.; Nešić, Maja A.; Petković, Marijana; Trivunac, Katarina V.; Pavlović, Vladimir B.

(2017)

TY  - JOUR
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Nešić, Maja A.
AU  - Petković, Marijana
AU  - Trivunac, Katarina V.
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1407
AB  - The paper presents chemical and structural analysis of geopolymer materials which are obtained by alkali-activated calcined clay (metakaolin) originated from Serbia under strictly defined conditions. Characterization of the metakaolin and geopolymers molecular structure has been done using X-ray diffraction, scanning electron microscope, Fourier transform infrared spectroscopy and matrix-assisted laser desorption ionization time-of-flight mass spectrometry. The paper presents the possibility of obtaining geopolymer structure and differences in chemical and structural characterization of these materials taking into account the concentration of NaOH as a variable parameter. The results of MALDI analysis of metakaolin and synthesized geopolymer structures using various matrix system: 2,4,6 trihydroxyacetophenone (THAP), alpha-cyano-4-hydroxycinnamic, 2,6 dihydroxyacetophenone and laser desorption/ionization, have shown that THAP matrix is the most appropriate for analysing these aluminosilicate materials.
T2  - Environmental Earth Sciences
T1  - Structure analysis of geopolymers synthesized from clay originated from Serbia
VL  - 76
IS  - 2
DO  - 10.1007/s12665-016-6360-4
ER  - 
@article{
author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Nešić, Maja A. and Petković, Marijana and Trivunac, Katarina V. and Pavlović, Vladimir B.",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1407",
abstract = "The paper presents chemical and structural analysis of geopolymer materials which are obtained by alkali-activated calcined clay (metakaolin) originated from Serbia under strictly defined conditions. Characterization of the metakaolin and geopolymers molecular structure has been done using X-ray diffraction, scanning electron microscope, Fourier transform infrared spectroscopy and matrix-assisted laser desorption ionization time-of-flight mass spectrometry. The paper presents the possibility of obtaining geopolymer structure and differences in chemical and structural characterization of these materials taking into account the concentration of NaOH as a variable parameter. The results of MALDI analysis of metakaolin and synthesized geopolymer structures using various matrix system: 2,4,6 trihydroxyacetophenone (THAP), alpha-cyano-4-hydroxycinnamic, 2,6 dihydroxyacetophenone and laser desorption/ionization, have shown that THAP matrix is the most appropriate for analysing these aluminosilicate materials.",
journal = "Environmental Earth Sciences",
title = "Structure analysis of geopolymers synthesized from clay originated from Serbia",
volume = "76",
number = "2",
doi = "10.1007/s12665-016-6360-4"
}
Nenadović, S. S., Kljajević, L. M., Nešić, M. A., Petković, M., Trivunac, K. V.,& Pavlović, V. B. (2017). Structure analysis of geopolymers synthesized from clay originated from Serbia.
Environmental Earth Sciences, 76(2).
https://doi.org/10.1007/s12665-016-6360-4
Nenadović SS, Kljajević LM, Nešić MA, Petković M, Trivunac KV, Pavlović VB. Structure analysis of geopolymers synthesized from clay originated from Serbia. Environmental Earth Sciences. 2017;76(2)
Nenadović Snežana S., Kljajević Ljiljana M., Nešić Maja A., Petković Marijana, Trivunac Katarina V., Pavlović Vladimir B., "Structure analysis of geopolymers synthesized from clay originated from Serbia" Environmental Earth Sciences, 76, no. 2 (2017),
https://doi.org/10.1007/s12665-016-6360-4 .
1
11
7
12

Composition of red mud and/or metakaolin-based modified geopolymers

Uskoković, Dragan; Radmilović, Velimir R.; Vukčević, Mira; Bošković, Ivana V.; Nenadović, Snežana S.; Mirković, Miljana M.; Čalija, Bojan; Pavlović, Vladimir B.; Kljajević, Ljiljana M.

(Belgrade : Materials Research Society of Serbia, 2017)

TY  - CONF
AU  - Vukčević, Mira
AU  - Bošković, Ivana V.
AU  - Nenadović, Snežana S.
AU  - Mirković, Miljana M.
AU  - Čalija, Bojan
AU  - Pavlović, Vladimir B.
AU  - Kljajević, Ljiljana M.
PY  - 2017
UR  - http://itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1207
UR  - http://itn.sanu.ac.rs/opus4/files/1207/Vukcevic_YUCOMAT2017.pdf
UR  - http://dais.sanu.ac.rs/123456789/15438
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7558
AB  - There is potential use of red mud for synthesis of inorganic polymeric materials through a geopolymerization process as an alternative in the sectors of construction and building materials. By introducing of inorganic and organic modificators of microstructure (calcium hydroxide, bifunctional epoxy resins, or various types of alkoxylanes) during the geopolymer synthesis the enhanced values of ductility and strength can be obtained. Research was performed on alumosilicate material (red mud and metakaolin) and alkali activator raw mixture with defined quantity of modificator. The best sinthesys conditions were identified. Post-synthesis curing also play important role in obtaining of good-performing geopolymers. Characteristics of geopolymers were defined by measuring of compressive strength, N2-physisorption, as well as by SEM analysis, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). In addition the lower value of zeta potential was identified as the assisting factor for the specific structure domains formation (within the certain range of pH) accompanied by the high compressive strength.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017
T1  - Composition of red mud and/or metakaolin-based modified geopolymers
SP  - 72
EP  - 72
ER  - 
@conference{
editor = "Uskoković, Dragan, Radmilović, Velimir R.",
author = "Vukčević, Mira and Bošković, Ivana V. and Nenadović, Snežana S. and Mirković, Miljana M. and Čalija, Bojan and Pavlović, Vladimir B. and Kljajević, Ljiljana M.",
year = "2017",
url = "http://itn.sanu.ac.rs/opus4/frontdoor/index/index/docId/1207, http://itn.sanu.ac.rs/opus4/files/1207/Vukcevic_YUCOMAT2017.pdf, http://dais.sanu.ac.rs/123456789/15438, http://vinar.vin.bg.ac.rs/handle/123456789/7558",
abstract = "There is potential use of red mud for synthesis of inorganic polymeric materials through a geopolymerization process as an alternative in the sectors of construction and building materials. By introducing of inorganic and organic modificators of microstructure (calcium hydroxide, bifunctional epoxy resins, or various types of alkoxylanes) during the geopolymer synthesis the enhanced values of ductility and strength can be obtained. Research was performed on alumosilicate material (red mud and metakaolin) and alkali activator raw mixture with defined quantity of modificator. The best sinthesys conditions were identified. Post-synthesis curing also play important role in obtaining of good-performing geopolymers. Characteristics of geopolymers were defined by measuring of compressive strength, N2-physisorption, as well as by SEM analysis, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). In addition the lower value of zeta potential was identified as the assisting factor for the specific structure domains formation (within the certain range of pH) accompanied by the high compressive strength.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017",
title = "Composition of red mud and/or metakaolin-based modified geopolymers",
pages = "72-72"
}
Uskoković, D., Radmilović, V. R., Vukčević, M., Bošković, I. V., Nenadović, S. S., Mirković, M. M., Čalija, B., Pavlović, V. B.,& Kljajević, L. M. (2017). Composition of red mud and/or metakaolin-based modified geopolymers.
Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017
Belgrade : Materials Research Society of Serbia., 72-72.
Uskoković D, Radmilović VR, Vukčević M, Bošković IV, Nenadović SS, Mirković MM, Čalija B, Pavlović VB, Kljajević LM. Composition of red mud and/or metakaolin-based modified geopolymers. Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017. 2017;:72-72
Uskoković Dragan, Radmilović Velimir R., Vukčević Mira, Bošković Ivana V., Nenadović Snežana S., Mirković Miljana M., Čalija Bojan, Pavlović Vladimir B., Kljajević Ljiljana M., "Composition of red mud and/or metakaolin-based modified geopolymers" Programme and The Book of Abstracts / Nineteenth Annual Conference YUCOMAT 2017, Herceg Novi, September 4-8, 2017 (2017):72-72

Structural and chemical properties of thermally treated geopolymer samples

Kljajević, Ljiljana M.; Nenadović, Snežana S.; Nenadović, Miloš; Bundaleski, Nenad; Todorović, Bratislav Ž.; Pavlović, Vladimir B.; Rakočević, Zlatko Lj.

(2017)

TY  - JOUR
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Nenadović, Miloš
AU  - Bundaleski, Nenad
AU  - Todorović, Bratislav Ž.
AU  - Pavlović, Vladimir B.
AU  - Rakočević, Zlatko Lj.
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1579
AB  - This article presents the results of the compositional, structural and morphological study of geopolymers synthesized from metakaolin and an alkali activator. The study involved the investigation of the structural and chemical properties of the geopolymer, in addition to thermally treated geopolymers up to 600 and 900 degrees C. The precursor of the geopolymer, and the geopolymer samples before and after the thermal treatment, were investigated by Fourier transformation infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and SEM analysis. The corrected average value of the ratio of silicon and aluminum in the geopolymer samples (SiGp:Al) is about 1.46, which suggests that the obtained geopolymer samples represent a mixture of roughly equal amounts of sialate and sialate-siloxo units. Annealing the geopolymer samples at 600 degrees C decreases the amount of Si-ONa bonds and induces the cross-linking of polymer changes. At the same time, other sodium containing alumino-silicate phases are created. The thermal treatment at 900 degrees C leads to a considerable reduction of oxygen and particularly sodium, followed by significant morphological changes i.e. formation of a complex porous structure. Additionally, a new semicrystaline phase appears. Both XRD and XPS results imply that this new phase may be nepheline and it is plausible that this phase begins to nucleate at temperatures below 900 degrees C.
T2  - Ceramics International
T1  - Structural and chemical properties of thermally treated geopolymer samples
VL  - 43
IS  - 9
SP  - 6700
EP  - 6708
DO  - 10.1016/j.ceramint.2017.02.066
ER  - 
@article{
author = "Kljajević, Ljiljana M. and Nenadović, Snežana S. and Nenadović, Miloš and Bundaleski, Nenad and Todorović, Bratislav Ž. and Pavlović, Vladimir B. and Rakočević, Zlatko Lj.",
year = "2017",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1579",
abstract = "This article presents the results of the compositional, structural and morphological study of geopolymers synthesized from metakaolin and an alkali activator. The study involved the investigation of the structural and chemical properties of the geopolymer, in addition to thermally treated geopolymers up to 600 and 900 degrees C. The precursor of the geopolymer, and the geopolymer samples before and after the thermal treatment, were investigated by Fourier transformation infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and SEM analysis. The corrected average value of the ratio of silicon and aluminum in the geopolymer samples (SiGp:Al) is about 1.46, which suggests that the obtained geopolymer samples represent a mixture of roughly equal amounts of sialate and sialate-siloxo units. Annealing the geopolymer samples at 600 degrees C decreases the amount of Si-ONa bonds and induces the cross-linking of polymer changes. At the same time, other sodium containing alumino-silicate phases are created. The thermal treatment at 900 degrees C leads to a considerable reduction of oxygen and particularly sodium, followed by significant morphological changes i.e. formation of a complex porous structure. Additionally, a new semicrystaline phase appears. Both XRD and XPS results imply that this new phase may be nepheline and it is plausible that this phase begins to nucleate at temperatures below 900 degrees C.",
journal = "Ceramics International",
title = "Structural and chemical properties of thermally treated geopolymer samples",
volume = "43",
number = "9",
pages = "6700-6708",
doi = "10.1016/j.ceramint.2017.02.066"
}
Kljajević, L. M., Nenadović, S. S., Nenadović, M., Bundaleski, N., Todorović, B. Ž., Pavlović, V. B.,& Rakočević, Z. Lj. (2017). Structural and chemical properties of thermally treated geopolymer samples.
Ceramics International, 43(9), 6700-6708.
https://doi.org/10.1016/j.ceramint.2017.02.066
Kljajević LM, Nenadović SS, Nenadović M, Bundaleski N, Todorović BŽ, Pavlović VB, Rakočević ZL. Structural and chemical properties of thermally treated geopolymer samples. Ceramics International. 2017;43(9):6700-6708
Kljajević Ljiljana M., Nenadović Snežana S., Nenadović Miloš, Bundaleski Nenad, Todorović Bratislav Ž., Pavlović Vladimir B., Rakočević Zlatko Lj., "Structural and chemical properties of thermally treated geopolymer samples" Ceramics International, 43, no. 9 (2017):6700-6708,
https://doi.org/10.1016/j.ceramint.2017.02.066 .
40
39
40

Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals

Kljajević, Ljiljana M.; Šaponjić, Aleksandra; Ilić, Svetlana M.; Nenadović, Snežana S.; Kokunešoski, Maja; Egelja, Adela; Devečerski, Aleksandar

(2016)

TY  - JOUR
AU  - Kljajević, Ljiljana M.
AU  - Šaponjić, Aleksandra
AU  - Ilić, Svetlana M.
AU  - Nenadović, Snežana S.
AU  - Kokunešoski, Maja
AU  - Egelja, Adela
AU  - Devečerski, Aleksandar
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1014
AB  - The most promising method for obtaining a large variety of non-oxide products having important technical uses is carbothermal-reduction reaction (CRR). By using this procedure, SiC and ZrC/SiC powders are obtained from diatomaceous earth and zircon powder. In this way the synthesized powders are obtained at a relatively low temperature due to good homogenization. Starting C/ZrSiO4 admixtures having different molar ratios (3:1, 4:1, 5:1 and 7:1) and C/SiO2 having ratios 1:1, 3:1, 4:1, and 7:1 were heated at temperatures between 1300 and 1600 degrees C in a controlled Ar flow atmosphere. The phase evolution was a function of the raw materials molar ratios and sintering temperature. The optimal parameters for the synthesis of SiC and ZrC/SiC powders were obtained. The results obtained by EDS analysis are in good agreement with those obtained by XRD analysis for the synthesized carbide powders. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals
VL  - 42
IS  - 7
SP  - 8128
EP  - 8135
DO  - 10.1016/j.ceramint.2016.02.017
ER  - 
@article{
author = "Kljajević, Ljiljana M. and Šaponjić, Aleksandra and Ilić, Svetlana M. and Nenadović, Snežana S. and Kokunešoski, Maja and Egelja, Adela and Devečerski, Aleksandar",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1014",
abstract = "The most promising method for obtaining a large variety of non-oxide products having important technical uses is carbothermal-reduction reaction (CRR). By using this procedure, SiC and ZrC/SiC powders are obtained from diatomaceous earth and zircon powder. In this way the synthesized powders are obtained at a relatively low temperature due to good homogenization. Starting C/ZrSiO4 admixtures having different molar ratios (3:1, 4:1, 5:1 and 7:1) and C/SiO2 having ratios 1:1, 3:1, 4:1, and 7:1 were heated at temperatures between 1300 and 1600 degrees C in a controlled Ar flow atmosphere. The phase evolution was a function of the raw materials molar ratios and sintering temperature. The optimal parameters for the synthesis of SiC and ZrC/SiC powders were obtained. The results obtained by EDS analysis are in good agreement with those obtained by XRD analysis for the synthesized carbide powders. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals",
volume = "42",
number = "7",
pages = "8128-8135",
doi = "10.1016/j.ceramint.2016.02.017"
}
Kljajević, L. M., Šaponjić, A., Ilić, S. M., Nenadović, S. S., Kokunešoski, M., Egelja, A.,& Devečerski, A. (2016). Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals.
Ceramics International, 42(7), 8128-8135.
https://doi.org/10.1016/j.ceramint.2016.02.017
Kljajević LM, Šaponjić A, Ilić SM, Nenadović SS, Kokunešoski M, Egelja A, Devečerski A. Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals. Ceramics International. 2016;42(7):8128-8135
Kljajević Ljiljana M., Šaponjić Aleksandra, Ilić Svetlana M., Nenadović Snežana S., Kokunešoski Maja, Egelja Adela, Devečerski Aleksandar, "Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals" Ceramics International, 42, no. 7 (2016):8128-8135,
https://doi.org/10.1016/j.ceramint.2016.02.017 .
2
2
2

Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin

Trivunac, Katarina V.; Kljajević, Ljiljana M.; Nenadović, Snežana S.; Gulicovski, Jelena J.; Mirković, Miljana M.; Babić, Biljana M.; Stevanovic, Slavica

(2016)

TY  - JOUR
AU  - Trivunac, Katarina V.
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Gulicovski, Jelena J.
AU  - Mirković, Miljana M.
AU  - Babić, Biljana M.
AU  - Stevanovic, Slavica
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1229
AB  - The microstructural characterization and adsorption properties of metakaolin (MK) and alkali-activated metakaolin, known as geopolymer materials (GP) were investigated. The structure and properties of the metakaolin and obtained geopolymer were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. Furthermore, based on the analysis of adsorption efficiency, microstructure and mineral structure, the difference between geopolymer and metakaolin on the performance of immobilizing heavy metals have been discussed. The kinetics of adsorption can be represented by pseudo-second order equation. The results of lead ions adsorption experiments were best fitted by Freundlich adsorption isotherm for both investigated adsorbents. The highest removal efficiencies of alkali-activated material based on metakaolin was found 97.5% at pH 4 and metakaolin removal efficiencies was found 92% at pH 5.5.
T2  - Science of Sintering
T1  - Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin
VL  - 48
IS  - 2
SP  - 209
EP  - 220
DO  - 10.2298/SOS1602209T
ER  - 
@article{
author = "Trivunac, Katarina V. and Kljajević, Ljiljana M. and Nenadović, Snežana S. and Gulicovski, Jelena J. and Mirković, Miljana M. and Babić, Biljana M. and Stevanovic, Slavica",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/1229",
abstract = "The microstructural characterization and adsorption properties of metakaolin (MK) and alkali-activated metakaolin, known as geopolymer materials (GP) were investigated. The structure and properties of the metakaolin and obtained geopolymer were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. Furthermore, based on the analysis of adsorption efficiency, microstructure and mineral structure, the difference between geopolymer and metakaolin on the performance of immobilizing heavy metals have been discussed. The kinetics of adsorption can be represented by pseudo-second order equation. The results of lead ions adsorption experiments were best fitted by Freundlich adsorption isotherm for both investigated adsorbents. The highest removal efficiencies of alkali-activated material based on metakaolin was found 97.5% at pH 4 and metakaolin removal efficiencies was found 92% at pH 5.5.",
journal = "Science of Sintering",
title = "Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin",
volume = "48",
number = "2",
pages = "209-220",
doi = "10.2298/SOS1602209T"
}
Trivunac, K. V., Kljajević, L. M., Nenadović, S. S., Gulicovski, J. J., Mirković, M. M., Babić, B. M.,& Stevanovic, S. (2016). Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin.
Science of Sintering, 48(2), 209-220.
https://doi.org/10.2298/SOS1602209T
Trivunac KV, Kljajević LM, Nenadović SS, Gulicovski JJ, Mirković MM, Babić BM, Stevanovic S. Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin. Science of Sintering. 2016;48(2):209-220
Trivunac Katarina V., Kljajević Ljiljana M., Nenadović Snežana S., Gulicovski Jelena J., Mirković Miljana M., Babić Biljana M., Stevanovic Slavica, "Microstructural Characterization and Adsorption Properties of Alkali-Activated Materials Based on Metakaolin" Science of Sintering, 48, no. 2 (2016):209-220,
https://doi.org/10.2298/SOS1602209T .
4
5
6

Effects of sintering on the structural, micro structural and magnetic properties of nanoparticle manganite Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) (vol 41, pg 14964, 2015)

Rosić, Milena; Kljajević, Ljiljana M.; Jordanov, Dragana; Stoiljković, Milovan; Kusigerski, Vladan; Spasojević, Vojislav; Matović, Branko

(2016)

TY  - BOOK
AU  - Rosić, Milena
AU  - Kljajević, Ljiljana M.
AU  - Jordanov, Dragana
AU  - Stoiljković, Milovan
AU  - Kusigerski, Vladan
AU  - Spasojević, Vojislav
AU  - Matović, Branko
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/980
T2  - Ceramics International
T1  - Effects of sintering on the structural, micro structural and magnetic properties of nanoparticle manganite Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) (vol 41, pg 14964, 2015)
VL  - 42
IS  - 6
SP  - 7895
EP  - 7895
DO  - 10.1016/j.ceramint.2016.01.134
ER  - 
@book{
author = "Rosić, Milena and Kljajević, Ljiljana M. and Jordanov, Dragana and Stoiljković, Milovan and Kusigerski, Vladan and Spasojević, Vojislav and Matović, Branko",
year = "2016",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/980",
journal = "Ceramics International",
title = "Effects of sintering on the structural, micro structural and magnetic properties of nanoparticle manganite Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) (vol 41, pg 14964, 2015)",
volume = "42",
number = "6",
pages = "7895-7895",
doi = "10.1016/j.ceramint.2016.01.134"
}
Rosić, M., Kljajević, L. M., Jordanov, D., Stoiljković, M., Kusigerski, V., Spasojević, V.,& Matović, B. (2016). Effects of sintering on the structural, micro structural and magnetic properties of nanoparticle manganite Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) (vol 41, pg 14964, 2015).
Ceramics International, 42(6), 7895-7895.
https://doi.org/10.1016/j.ceramint.2016.01.134
Rosić M, Kljajević LM, Jordanov D, Stoiljković M, Kusigerski V, Spasojević V, Matović B. Effects of sintering on the structural, micro structural and magnetic properties of nanoparticle manganite Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) (vol 41, pg 14964, 2015). Ceramics International. 2016;42(6):7895-7895
Rosić Milena, Kljajević Ljiljana M., Jordanov Dragana, Stoiljković Milovan, Kusigerski Vladan, Spasojević Vojislav, Matović Branko, "Effects of sintering on the structural, micro structural and magnetic properties of nanoparticle manganite Ca1-xGdxMnO3 (x=0.05, 0.1, 0.15, 0.2) (vol 41, pg 14964, 2015)" Ceramics International, 42, no. 6 (2016):7895-7895,
https://doi.org/10.1016/j.ceramint.2016.01.134 .

Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids

Nenadović, Snežana S.; Kljajević, Ljiljana M.; Markovic, S.; Omerašević, Mia; Jovanović, Uroš D.; Andrić, Velibor; Vukanac, Ivana

(2015)

TY  - JOUR
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Markovic, S.
AU  - Omerašević, Mia
AU  - Jovanović, Uroš D.
AU  - Andrić, Velibor
AU  - Vukanac, Ivana
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/854
AB  - The removal of Cs (I) ions from aqueous solution was studied using natural diatomite as adsorption materials originated from Rudovci, Serbia. The microstructure of natural diatomite has been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) while the degree of Cs adsorption was evaluated by atomic emission spectroscopy. The cation exchange capacity (CEC) values for natural diatomite was 50 meq/100g. Depending on whether the Cs adsorption occurred in the acidic and alkaline media at a temperature of 298.15 K in acidic media Delta G(0) values was -12.674 kJ/mol, while in alkaline media Delta G(0) was 13.142 kJ/mol and a change of Delta S-0 to 42.51 J/molK in acidic media and 44.08 J/molK in alkaline medium.
T2  - Science of Sintering
T1  - Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids
VL  - 47
IS  - 3
SP  - 299
EP  - 309
DO  - 10.2298/SOS1503299N
ER  - 
@article{
author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Markovic, S. and Omerašević, Mia and Jovanović, Uroš D. and Andrić, Velibor and Vukanac, Ivana",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/854",
abstract = "The removal of Cs (I) ions from aqueous solution was studied using natural diatomite as adsorption materials originated from Rudovci, Serbia. The microstructure of natural diatomite has been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) while the degree of Cs adsorption was evaluated by atomic emission spectroscopy. The cation exchange capacity (CEC) values for natural diatomite was 50 meq/100g. Depending on whether the Cs adsorption occurred in the acidic and alkaline media at a temperature of 298.15 K in acidic media Delta G(0) values was -12.674 kJ/mol, while in alkaline media Delta G(0) was 13.142 kJ/mol and a change of Delta S-0 to 42.51 J/molK in acidic media and 44.08 J/molK in alkaline medium.",
journal = "Science of Sintering",
title = "Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids",
volume = "47",
number = "3",
pages = "299-309",
doi = "10.2298/SOS1503299N"
}
Nenadović, S. S., Kljajević, L. M., Markovic, S., Omerašević, M., Jovanović, U. D., Andrić, V.,& Vukanac, I. (2015). Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids.
Science of Sintering, 47(3), 299-309.
https://doi.org/10.2298/SOS1503299N
Nenadović SS, Kljajević LM, Markovic S, Omerašević M, Jovanović UD, Andrić V, Vukanac I. Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids. Science of Sintering. 2015;47(3):299-309
Nenadović Snežana S., Kljajević Ljiljana M., Markovic S., Omerašević Mia, Jovanović Uroš D., Andrić Velibor, Vukanac Ivana, "Natural Diatomite (Rudovci, Serbia) as Adsorbent for Removal Cs from Radioactive Waste Liquids" Science of Sintering, 47, no. 3 (2015):299-309,
https://doi.org/10.2298/SOS1503299N .
5
6
7

Mechanochemical treatment and structural properties of lead adsorption on kaolinite (Rudovci, Serbia)

Nenadović, Snežana S.; Kljajević, Ljiljana M.; Nenadović, Miloš; Mirković, Miljana M.; Markovic, Smilja B.; Rakočević, Zlatko Lj.

(2015)

TY  - JOUR
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Miloš
AU  - Mirković, Miljana M.
AU  - Markovic, Smilja B.
AU  - Rakočević, Zlatko Lj.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/545
AB  - In the present work, remediation of lead-containing solution using raw and modified kaolinite has been presented. The micro and nanostructure of samples has been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). Laser diffraction and scattering (LDS), was analyzed by particle size analyzer based on laser diffraction and particle size distribution (PSD) was done. The degree of metal adsorption was evaluated analyzing the Pb(II) contaminated samples by inductively coupled plasma atomic emission spectrometry (micro- and nanostructure on immobilization efficiency correlCP AES). The results show the impact of immobilization efficiency and ation between micro- and nanostructure. The thermodynamic data (Delta HA degrees, Delta SA degrees, Delta GA degrees) are calculated from the temperature-dependent sorption isotherms. The results suggest sorption process of Pb(II) on kaolinite as spontaneous and endothermic.
T2  - Environmental Earth Sciences
T1  - Mechanochemical treatment and structural properties of lead adsorption on kaolinite (Rudovci, Serbia)
VL  - 73
IS  - 11
SP  - 7669
EP  - 7677
DO  - 10.1007/s12665-014-3941-y
ER  - 
@article{
author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Nenadović, Miloš and Mirković, Miljana M. and Markovic, Smilja B. and Rakočević, Zlatko Lj.",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/545",
abstract = "In the present work, remediation of lead-containing solution using raw and modified kaolinite has been presented. The micro and nanostructure of samples has been characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and atomic force microscopy (AFM). Laser diffraction and scattering (LDS), was analyzed by particle size analyzer based on laser diffraction and particle size distribution (PSD) was done. The degree of metal adsorption was evaluated analyzing the Pb(II) contaminated samples by inductively coupled plasma atomic emission spectrometry (micro- and nanostructure on immobilization efficiency correlCP AES). The results show the impact of immobilization efficiency and ation between micro- and nanostructure. The thermodynamic data (Delta HA degrees, Delta SA degrees, Delta GA degrees) are calculated from the temperature-dependent sorption isotherms. The results suggest sorption process of Pb(II) on kaolinite as spontaneous and endothermic.",
journal = "Environmental Earth Sciences",
title = "Mechanochemical treatment and structural properties of lead adsorption on kaolinite (Rudovci, Serbia)",
volume = "73",
number = "11",
pages = "7669-7677",
doi = "10.1007/s12665-014-3941-y"
}
Nenadović, S. S., Kljajević, L. M., Nenadović, M., Mirković, M. M., Markovic, S. B.,& Rakočević, Z. Lj. (2015). Mechanochemical treatment and structural properties of lead adsorption on kaolinite (Rudovci, Serbia).
Environmental Earth Sciences, 73(11), 7669-7677.
https://doi.org/10.1007/s12665-014-3941-y
Nenadović SS, Kljajević LM, Nenadović M, Mirković MM, Markovic SB, Rakočević ZL. Mechanochemical treatment and structural properties of lead adsorption on kaolinite (Rudovci, Serbia). Environmental Earth Sciences. 2015;73(11):7669-7677
Nenadović Snežana S., Kljajević Ljiljana M., Nenadović Miloš, Mirković Miljana M., Markovic Smilja B., Rakočević Zlatko Lj., "Mechanochemical treatment and structural properties of lead adsorption on kaolinite (Rudovci, Serbia)" Environmental Earth Sciences, 73, no. 11 (2015):7669-7677,
https://doi.org/10.1007/s12665-014-3941-y .
10
12
14

Predicting of lead distribution and immobilization in soil of the region of lignite mining (Rudovci, Serbia)

Musicki, Stevan M.; Kljajević, Ljiljana M.; Milanovic, Misko M.; Čebela, Maria; Milovanovic, Sladana S.; Nenadović, Snežana S.; Nenadović, Miloš

(2015)

TY  - JOUR
AU  - Musicki, Stevan M.
AU  - Kljajević, Ljiljana M.
AU  - Milanovic, Misko M.
AU  - Čebela, Maria
AU  - Milovanovic, Sladana S.
AU  - Nenadović, Snežana S.
AU  - Nenadović, Miloš
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/896
AB  - Lead distribution and immobilization in cultivated soils in Rudovci, Serbia was investigated. Sampling was carried out by the method recommended by ICP-Forests Manual, 2006, Part III Sampling and analysis of Soil. The sampling geometry was systematically designed with a random component. The maximum sampling depth was 100 cm and lead distribution was monitored during 425 days. First sample was taken after 50 days and every single next sample was taken after 50 days except for the last sample which was taken after 25 days. Before the profile contamination, physical and chemical soil analysis has been done. The cation exchange capacity of the soil was done because media affect mobility cations (anions) in soil. The effect of immobilizations of Pb is highest in the second horizons where the depth of investigating soil is 25-50 cm.
T2  - Acta Montanistica Slovaca
T1  - Predicting of lead distribution and immobilization in soil of the region of lignite mining (Rudovci, Serbia)
VL  - 20
IS  - 3
SP  - 192
EP  - 199
ER  - 
@article{
author = "Musicki, Stevan M. and Kljajević, Ljiljana M. and Milanovic, Misko M. and Čebela, Maria and Milovanovic, Sladana S. and Nenadović, Snežana S. and Nenadović, Miloš",
year = "2015",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/896",
abstract = "Lead distribution and immobilization in cultivated soils in Rudovci, Serbia was investigated. Sampling was carried out by the method recommended by ICP-Forests Manual, 2006, Part III Sampling and analysis of Soil. The sampling geometry was systematically designed with a random component. The maximum sampling depth was 100 cm and lead distribution was monitored during 425 days. First sample was taken after 50 days and every single next sample was taken after 50 days except for the last sample which was taken after 25 days. Before the profile contamination, physical and chemical soil analysis has been done. The cation exchange capacity of the soil was done because media affect mobility cations (anions) in soil. The effect of immobilizations of Pb is highest in the second horizons where the depth of investigating soil is 25-50 cm.",
journal = "Acta Montanistica Slovaca",
title = "Predicting of lead distribution and immobilization in soil of the region of lignite mining (Rudovci, Serbia)",
volume = "20",
number = "3",
pages = "192-199"
}
Musicki, S. M., Kljajević, L. M., Milanovic, M. M., Čebela, M., Milovanovic, S. S., Nenadović, S. S.,& Nenadović, M. (2015). Predicting of lead distribution and immobilization in soil of the region of lignite mining (Rudovci, Serbia).
Acta Montanistica Slovaca, 20(3), 192-199.
Musicki SM, Kljajević LM, Milanovic MM, Čebela M, Milovanovic SS, Nenadović SS, Nenadović M. Predicting of lead distribution and immobilization in soil of the region of lignite mining (Rudovci, Serbia). Acta Montanistica Slovaca. 2015;20(3):192-199
Musicki Stevan M., Kljajević Ljiljana M., Milanovic Misko M., Čebela Maria, Milovanovic Sladana S., Nenadović Snežana S., Nenadović Miloš, "Predicting of lead distribution and immobilization in soil of the region of lignite mining (Rudovci, Serbia)" Acta Montanistica Slovaca, 20, no. 3 (2015):192-199
2

Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite

Nenadović, Snežana S.; Kljajević, Ljiljana M.; Šešlak, Bojan Ž.; Obradovic, Nina N.; Vukanac, Ivana; Pavlović, Vladimir B.

(2014)

TY  - JOUR
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Šešlak, Bojan Ž.
AU  - Obradovic, Nina N.
AU  - Vukanac, Ivana
AU  - Pavlović, Vladimir B.
PY  - 2014
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5451
AB  - The aim of this study was to investigate the Cs+ ions sorption on natural minerals clinoptilolite. The analysis of clinoptilolite and clinoptilolite with adsorbed Cs+ ion was conducted by X-ray diffraction, scanning electron microscopy, X-ray fluorescence, and gamma spectrometry. The specific activity of naturally occurring radionuclides in clinoptilolite was determined by gamma spectrometry by using the HPGe semiconductor detector. Obtained activity concentrations ranged from 49 Bq/kg to 810 Bq/kg for K-40, 5.7 Bq/kg to 10 Bq/kg for U-238, 5.8 Bq/kg to 70 Bq/kg for Th-232(Ac-228), and the presence of artificial radionuclides was not detected (Cs-137 LT 0.02 Bq/kg). The study of the thermal decomposition of raw clinoptilolite and Cs adsorbed clinoptilolite by differential thermal analysis is presented in this paper. The activation energy of the reaction phase transformation of raw clinoptilolite is 156.7 kJ/mol, while Cs adsorbed clinoptilolite is 121.7 kJ/mol. The lower value of activation energy reaction of the phase transformation Cs adsorbed clinoptilolite indicates that Cs which is adsorbed destabilizes the crystal structure of clinoptilolite and thus facilitates the transition to the amorphous state.
T2  - Nuclear technology and radiation protection
T1  - Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite
VL  - 29
IS  - 2
SP  - 135
EP  - 141
DO  - 10.2298/NTRP1402135N
ER  - 
@article{
author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Šešlak, Bojan Ž. and Obradovic, Nina N. and Vukanac, Ivana and Pavlović, Vladimir B.",
year = "2014",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5451",
abstract = "The aim of this study was to investigate the Cs+ ions sorption on natural minerals clinoptilolite. The analysis of clinoptilolite and clinoptilolite with adsorbed Cs+ ion was conducted by X-ray diffraction, scanning electron microscopy, X-ray fluorescence, and gamma spectrometry. The specific activity of naturally occurring radionuclides in clinoptilolite was determined by gamma spectrometry by using the HPGe semiconductor detector. Obtained activity concentrations ranged from 49 Bq/kg to 810 Bq/kg for K-40, 5.7 Bq/kg to 10 Bq/kg for U-238, 5.8 Bq/kg to 70 Bq/kg for Th-232(Ac-228), and the presence of artificial radionuclides was not detected (Cs-137 LT 0.02 Bq/kg). The study of the thermal decomposition of raw clinoptilolite and Cs adsorbed clinoptilolite by differential thermal analysis is presented in this paper. The activation energy of the reaction phase transformation of raw clinoptilolite is 156.7 kJ/mol, while Cs adsorbed clinoptilolite is 121.7 kJ/mol. The lower value of activation energy reaction of the phase transformation Cs adsorbed clinoptilolite indicates that Cs which is adsorbed destabilizes the crystal structure of clinoptilolite and thus facilitates the transition to the amorphous state.",
journal = "Nuclear technology and radiation protection",
title = "Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite",
volume = "29",
number = "2",
pages = "135-141",
doi = "10.2298/NTRP1402135N"
}
Nenadović, S. S., Kljajević, L. M., Šešlak, B. Ž., Obradovic, N. N., Vukanac, I.,& Pavlović, V. B. (2014). Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite.
Nuclear technology and radiation protection, 29(2), 135-141.
https://doi.org/10.2298/NTRP1402135N
Nenadović SS, Kljajević LM, Šešlak BŽ, Obradovic NN, Vukanac I, Pavlović VB. Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite. Nuclear technology and radiation protection. 2014;29(2):135-141
Nenadović Snežana S., Kljajević Ljiljana M., Šešlak Bojan Ž., Obradovic Nina N., Vukanac Ivana, Pavlović Vladimir B., "Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite" Nuclear technology and radiation protection, 29, no. 2 (2014):135-141,
https://doi.org/10.2298/NTRP1402135N .

Spark plasma sintering of ZrC-SiC ceramics with LiYO2 additive

Kljajević, Ljiljana M.; Nenadović, Snežana S.; Nenadović, Miloš; Gautam, Devendraprakash; Volkov-Husović, Tatjana; Devečerski, Aleksandar; Matović, Branko

(2013)

TY  - JOUR
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Nenadović, Miloš
AU  - Gautam, Devendraprakash
AU  - Volkov-Husović, Tatjana
AU  - Devečerski, Aleksandar
AU  - Matović, Branko
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5498
AB  - Spark plasma sintering (SPS) of ZrC-SiC composite powders in the presence of LiYO2 sintering additive was studied. The starting powders were obtained by a carbothermal reduction (CTR) of natural mineral zircon (ZrSiO4), which provided an intimate mixing of in-situ created ZrC and SiC powders. This composite powder and LiYO2 as additive were densified by spark plasma sintering. Microstructural features of the composite were investigated by XRD, SEM/EDS and AFM analysis. The sintered composite material possesses promising mechanical properties and excellent cavitation resistance which was observed with a cavitation erosion test. The values of Vickers microhardness and fracture toughness of the composite material are 20.7 GPa and 5.07 MPam(1/2), respectively. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
T2  - Ceramics International
T1  - Spark plasma sintering of ZrC-SiC ceramics with LiYO2 additive
VL  - 39
IS  - 5
SP  - 5467
EP  - 5476
DO  - 10.1016/j.ceramint.2012.12.058
ER  - 
@article{
author = "Kljajević, Ljiljana M. and Nenadović, Snežana S. and Nenadović, Miloš and Gautam, Devendraprakash and Volkov-Husović, Tatjana and Devečerski, Aleksandar and Matović, Branko",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5498",
abstract = "Spark plasma sintering (SPS) of ZrC-SiC composite powders in the presence of LiYO2 sintering additive was studied. The starting powders were obtained by a carbothermal reduction (CTR) of natural mineral zircon (ZrSiO4), which provided an intimate mixing of in-situ created ZrC and SiC powders. This composite powder and LiYO2 as additive were densified by spark plasma sintering. Microstructural features of the composite were investigated by XRD, SEM/EDS and AFM analysis. The sintered composite material possesses promising mechanical properties and excellent cavitation resistance which was observed with a cavitation erosion test. The values of Vickers microhardness and fracture toughness of the composite material are 20.7 GPa and 5.07 MPam(1/2), respectively. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
journal = "Ceramics International",
title = "Spark plasma sintering of ZrC-SiC ceramics with LiYO2 additive",
volume = "39",
number = "5",
pages = "5467-5476",
doi = "10.1016/j.ceramint.2012.12.058"
}
Kljajević, L. M., Nenadović, S. S., Nenadović, M., Gautam, D., Volkov-Husović, T., Devečerski, A.,& Matović, B. (2013). Spark plasma sintering of ZrC-SiC ceramics with LiYO2 additive.
Ceramics International, 39(5), 5467-5476.
https://doi.org/10.1016/j.ceramint.2012.12.058
Kljajević LM, Nenadović SS, Nenadović M, Gautam D, Volkov-Husović T, Devečerski A, Matović B. Spark plasma sintering of ZrC-SiC ceramics with LiYO2 additive. Ceramics International. 2013;39(5):5467-5476
Kljajević Ljiljana M., Nenadović Snežana S., Nenadović Miloš, Gautam Devendraprakash, Volkov-Husović Tatjana, Devečerski Aleksandar, Matović Branko, "Spark plasma sintering of ZrC-SiC ceramics with LiYO2 additive" Ceramics International, 39, no. 5 (2013):5467-5476,
https://doi.org/10.1016/j.ceramint.2012.12.058 .
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17

Thermal Stability of Total Lipids Extracted from Zlatibor Bacon

Saicic, Snezana; Matekalo-Sverak, Vesna; Nenadović, Snežana S.; Kljajević, Ljiljana M.

(2013)

TY  - JOUR
AU  - Saicic, Snezana
AU  - Matekalo-Sverak, Vesna
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
PY  - 2013
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/5538
AB  - In this study, non-oxidative and oxidative thermogravimetric analysis was applied as a method for determining the thermal stability of the total lipids extracted from Zlatibor bacon in different phases of production (raw samples, 10th and 30th day of smoking and 30th day of storage). The activation energies of the thermal degradation and oxidation of the total lipids extracted from examined samples were determined. A moderate increase of the activation energy, as well as the other information gained from TG analyses, indicated that there were no significant oxidative changes in Zlatibor bacon lipids during the production and storing.
T2  - International Journal of Food Properties
T1  - Thermal Stability of Total Lipids Extracted from Zlatibor Bacon
VL  - 16
IS  - 6
SP  - 1191
EP  - 1199
DO  - 10.1080/10942912.2011.579672
ER  - 
@article{
author = "Saicic, Snezana and Matekalo-Sverak, Vesna and Nenadović, Snežana S. and Kljajević, Ljiljana M.",
year = "2013",
url = "http://vinar.vin.bg.ac.rs/handle/123456789/5538",
abstract = "In this study, non-oxidative and oxidative thermogravimetric analysis was applied as a method for determining the thermal stability of the total lipids extracted from Zlatibor bacon in different phases of production (raw samples, 10th and 30th day of smoking and 30th day of storage). The activation energies of the thermal degradation and oxidation of the total lipids extracted from examined samples were determined. A moderate increase of the activation energy, as well as the other information gained from TG analyses, indicated that there were no significant oxidative changes in Zlatibor bacon lipids during the production and storing.",
journal = "International Journal of Food Properties",
title = "Thermal Stability of Total Lipids Extracted from Zlatibor Bacon",
volume = "16",
number = "6",
pages = "1191-1199",
doi = "10.1080/10942912.2011.579672"
}
Saicic, S., Matekalo-Sverak, V., Nenadović, S. S.,& Kljajević, L. M. (2013). Thermal Stability of Total Lipids Extracted from Zlatibor Bacon.
International Journal of Food Properties, 16(6), 1191-1199.
https://doi.org/10.1080/10942912.2011.579672
Saicic S, Matekalo-Sverak V, Nenadović SS, Kljajević LM. Thermal Stability of Total Lipids Extracted from Zlatibor Bacon. International Journal of Food Properties. 2013;16(6):1191-1199
Saicic Snezana, Matekalo-Sverak Vesna, Nenadović Snežana S., Kljajević Ljiljana M., "Thermal Stability of Total Lipids Extracted from Zlatibor Bacon" International Journal of Food Properties, 16, no. 6 (2013):1191-1199,
https://doi.org/10.1080/10942912.2011.579672 .
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