TY  - JOUR
AU  - Milić, Petar S.
AU  - Rajković, Katarina M.
AU  - Nikolić, Goran S.
AU  - Jeremić, Sanja
AU  - Đurašević, Mirjana M.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10640
AB  - The aims of this research were preparation of Juglans nigra husk extracts by employing an ultrasonic-assisted extraction method and process optimization of minerals extraction using response surface methodology. Extracts from J. nigra L. fresh husk were prepared using ethanol (70%, v/v) as a solvent, at different extraction temperatures: 15, 30 and 40 °C, and extraction times: 5, 15, 30, 60 and 80 min. The content of minerals in ethanol extracts was determined using inductively coupled plasma optical emission spectrometry (ICP-OES). The response surface methodology (RSM) was developed to evaluate the effect of two extraction factors as well as to optimize the extraction variables for each mineral individually. The RSM models pointed out 40 °C temperature and extraction time in the range 77–80 min as optimal conditions for extraction of macro- and micro-elements. Results of RSM optimization showed the relative order of maximum obtained yield of macro-elements: K>P>S>Ca>Mg and maximum yield of micro-elements was Si>Zn>Sr>Cu.
T2  - Chemical Engineering Research and Design
T1  - Preparation of Juglans nigra L. husk extracts by applying an ultrasonic-assisted extraction method and process optimization of minerals extraction using response surface methodology
VL  - 191
SP  - 439
EP  - 445
DO  - 10.1016/j.cherd.2023.01.051
ER  - 

@article{
author = "Milić, Petar S. and Rajković, Katarina M. and Nikolić, Goran S. and Jeremić, Sanja and Đurašević, Mirjana M.",
year = "2023",
abstract = "The aims of this research were preparation of Juglans nigra husk extracts by employing an ultrasonic-assisted extraction method and process optimization of minerals extraction using response surface methodology. Extracts from J. nigra L. fresh husk were prepared using ethanol (70%, v/v) as a solvent, at different extraction temperatures: 15, 30 and 40 °C, and extraction times: 5, 15, 30, 60 and 80 min. The content of minerals in ethanol extracts was determined using inductively coupled plasma optical emission spectrometry (ICP-OES). The response surface methodology (RSM) was developed to evaluate the effect of two extraction factors as well as to optimize the extraction variables for each mineral individually. The RSM models pointed out 40 °C temperature and extraction time in the range 77–80 min as optimal conditions for extraction of macro- and micro-elements. Results of RSM optimization showed the relative order of maximum obtained yield of macro-elements: K>P>S>Ca>Mg and maximum yield of micro-elements was Si>Zn>Sr>Cu.",
journal = "Chemical Engineering Research and Design",
title = "Preparation of Juglans nigra L. husk extracts by applying an ultrasonic-assisted extraction method and process optimization of minerals extraction using response surface methodology",
volume = "191",
pages = "439-445",
doi = "10.1016/j.cherd.2023.01.051"
}

Milić, P. S., Rajković, K. M., Nikolić, G. S., Jeremić, S.,& Đurašević, M. M.. (2023). Preparation of Juglans nigra L. husk extracts by applying an ultrasonic-assisted extraction method and process optimization of minerals extraction using response surface methodology. in Chemical Engineering Research and Design, 191, 439-445.
https://doi.org/10.1016/j.cherd.2023.01.051

Milić PS, Rajković KM, Nikolić GS, Jeremić S, Đurašević MM. Preparation of Juglans nigra L. husk extracts by applying an ultrasonic-assisted extraction method and process optimization of minerals extraction using response surface methodology. in Chemical Engineering Research and Design. 2023;191:439-445.
doi:10.1016/j.cherd.2023.01.051 .

Milić, Petar S., Rajković, Katarina M., Nikolić, Goran S., Jeremić, Sanja, Đurašević, Mirjana M., "Preparation of Juglans nigra L. husk extracts by applying an ultrasonic-assisted extraction method and process optimization of minerals extraction using response surface methodology" in Chemical Engineering Research and Design, 191 (2023):439-445,
https://doi.org/10.1016/j.cherd.2023.01.051 . .

TY  - JOUR
AU  - Miljković, M. V.
AU  - Momčilović, M.
AU  - Stanković, Maja
AU  - Ćirković, Bratislav
AU  - Laketić, D.
AU  - Nikolić, Goran S.
AU  - Vujović, Maja M.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8059
AB  - Suitability of bentonite clay modified with sodium carboxymethyl cellulose (Na-CMC) for the removal of arsenic(III) ions from aqueous solution was tested in batch adsorption studies and complemented by theoretical modeling with Langmuir, Freundlich and Temkin isotherm models. The effects of various factors, such as the initial adsorbate concentrations, pH, and temperature of the solutions were investigated in series of experiments. FTIR analysis was used to detect functional groups typical for cellulose and bentonite. Scanning electron microscope was used to analyze the surface morphology of the composites. It was established that the removal process was fast in the beginning and adsorption equilibrium was attained in around 20 minutes with good fittings to both Langmuir and Freundlich model. Maximum adsorption capacity (Q max ) obtained from experiments was 9.4 mg/g. No influence of solution pH and temperature on the sorption was noticed. The series of conducted experiments showed that synthesized composites are suitable for the removal of arsenic from wastewaters by adsorption as efficient and low-cost technique. © 2019, ALÖKI Kft., Budapest, Hungary.
T2  - Applied Ecology and Environmental Research
T1  - Remediation of arsenic contaminated water by a novel carboxymethyl cellulose bentonite adsorbent
VL  - 17
IS  - 1
SP  - 733
EP  - 744
DO  - 10.15666/aeer/1701_733744
ER  - 

@article{
author = "Miljković, M. V. and Momčilović, M. and Stanković, Maja and Ćirković, Bratislav and Laketić, D. and Nikolić, Goran S. and Vujović, Maja M.",
year = "2019",
abstract = "Suitability of bentonite clay modified with sodium carboxymethyl cellulose (Na-CMC) for the removal of arsenic(III) ions from aqueous solution was tested in batch adsorption studies and complemented by theoretical modeling with Langmuir, Freundlich and Temkin isotherm models. The effects of various factors, such as the initial adsorbate concentrations, pH, and temperature of the solutions were investigated in series of experiments. FTIR analysis was used to detect functional groups typical for cellulose and bentonite. Scanning electron microscope was used to analyze the surface morphology of the composites. It was established that the removal process was fast in the beginning and adsorption equilibrium was attained in around 20 minutes with good fittings to both Langmuir and Freundlich model. Maximum adsorption capacity (Q max ) obtained from experiments was 9.4 mg/g. No influence of solution pH and temperature on the sorption was noticed. The series of conducted experiments showed that synthesized composites are suitable for the removal of arsenic from wastewaters by adsorption as efficient and low-cost technique. © 2019, ALÖKI Kft., Budapest, Hungary.",
journal = "Applied Ecology and Environmental Research",
title = "Remediation of arsenic contaminated water by a novel carboxymethyl cellulose bentonite adsorbent",
volume = "17",
number = "1",
pages = "733-744",
doi = "10.15666/aeer/1701_733744"
}

Miljković, M. V., Momčilović, M., Stanković, M., Ćirković, B., Laketić, D., Nikolić, G. S.,& Vujović, M. M.. (2019). Remediation of arsenic contaminated water by a novel carboxymethyl cellulose bentonite adsorbent. in Applied Ecology and Environmental Research, 17(1), 733-744.
https://doi.org/10.15666/aeer/1701_733744

Miljković MV, Momčilović M, Stanković M, Ćirković B, Laketić D, Nikolić GS, Vujović MM. Remediation of arsenic contaminated water by a novel carboxymethyl cellulose bentonite adsorbent. in Applied Ecology and Environmental Research. 2019;17(1):733-744.
doi:10.15666/aeer/1701_733744 .

Miljković, M. V., Momčilović, M., Stanković, Maja, Ćirković, Bratislav, Laketić, D., Nikolić, Goran S., Vujović, Maja M., "Remediation of arsenic contaminated water by a novel carboxymethyl cellulose bentonite adsorbent" in Applied Ecology and Environmental Research, 17, no. 1 (2019):733-744,
https://doi.org/10.15666/aeer/1701_733744 . .

TY  - JOUR
AU  - Ranđelović, Marjan S.
AU  - Momčilović, Milan Z.
AU  - Nikolić, Goran
AU  - Đorđević, Jelena S.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1754
AB  - Electrochemistry of carbon paste electrode which contained serpentinite powder and graphite in 1:1 weight ratio was examined in three-electrode cell regarding its electrocatalytic and sensing properties. For this purpose, red-ox reactions of potassium ferrocyanide in aqueous solutions as benchmark media and pesticide tebufenozide (TBF) were examined. Serpentinite characterization performed by XRPD, SEM/EDX, and FTIR confirmed the structure typical for this mineral rock. Voltammetric analyses have in all cases shown that serpentinite modified carbon paste electrode (S-CPE) possess superior electrocatalytic activity in contrast to bare CPE for the red-ox reactions of K-4[Fe(CN)(6)]. The enlargement of the peak currents, higher electroactive surface area, and the decline of the peak-to-peak separation are a proof of reversible and faster electron transfer kinetics for S-CPE. The effect of pH on the electrochemical behaviour of TBF was investigated in Britton-Robinson buffer solutions in range from 2.0 to 7.0 and showed the best analytical performance at pH 5.0. The oxidation peak of TBF appeared at + 0.5 V vs. Ag/AgCl under conditions optimized for the determination of TBF in the differential pulse stripping voltammetry: initial potential + 0.1 V, end potential + 0.9 V, accumulation potential -0.35 V, accumulation time 120 s, and the scan rate 50 my s(-1).
T2  - Journal of Electroanalytical Chemistry
T1  - Electrocatalitic behaviour of serpentinite modified carbon paste electrode
VL  - 801
SP  - 338
EP  - 344
DO  - 10.1016/j.jelechem.2017.08.011
ER  - 

@article{
author = "Ranđelović, Marjan S. and Momčilović, Milan Z. and Nikolić, Goran and Đorđević, Jelena S.",
year = "2017",
abstract = "Electrochemistry of carbon paste electrode which contained serpentinite powder and graphite in 1:1 weight ratio was examined in three-electrode cell regarding its electrocatalytic and sensing properties. For this purpose, red-ox reactions of potassium ferrocyanide in aqueous solutions as benchmark media and pesticide tebufenozide (TBF) were examined. Serpentinite characterization performed by XRPD, SEM/EDX, and FTIR confirmed the structure typical for this mineral rock. Voltammetric analyses have in all cases shown that serpentinite modified carbon paste electrode (S-CPE) possess superior electrocatalytic activity in contrast to bare CPE for the red-ox reactions of K-4[Fe(CN)(6)]. The enlargement of the peak currents, higher electroactive surface area, and the decline of the peak-to-peak separation are a proof of reversible and faster electron transfer kinetics for S-CPE. The effect of pH on the electrochemical behaviour of TBF was investigated in Britton-Robinson buffer solutions in range from 2.0 to 7.0 and showed the best analytical performance at pH 5.0. The oxidation peak of TBF appeared at + 0.5 V vs. Ag/AgCl under conditions optimized for the determination of TBF in the differential pulse stripping voltammetry: initial potential + 0.1 V, end potential + 0.9 V, accumulation potential -0.35 V, accumulation time 120 s, and the scan rate 50 my s(-1).",
journal = "Journal of Electroanalytical Chemistry",
title = "Electrocatalitic behaviour of serpentinite modified carbon paste electrode",
volume = "801",
pages = "338-344",
doi = "10.1016/j.jelechem.2017.08.011"
}

Ranđelović, M. S., Momčilović, M. Z., Nikolić, G.,& Đorđević, J. S.. (2017). Electrocatalitic behaviour of serpentinite modified carbon paste electrode. in Journal of Electroanalytical Chemistry, 801, 338-344.
https://doi.org/10.1016/j.jelechem.2017.08.011

Ranđelović MS, Momčilović MZ, Nikolić G, Đorđević JS. Electrocatalitic behaviour of serpentinite modified carbon paste electrode. in Journal of Electroanalytical Chemistry. 2017;801:338-344.
doi:10.1016/j.jelechem.2017.08.011 .

Ranđelović, Marjan S., Momčilović, Milan Z., Nikolić, Goran, Đorđević, Jelena S., "Electrocatalitic behaviour of serpentinite modified carbon paste electrode" in Journal of Electroanalytical Chemistry, 801 (2017):338-344,
https://doi.org/10.1016/j.jelechem.2017.08.011 . .

TY  - JOUR
AU  - Bojić, Danijela V.
AU  - Momčilović, Milan Z.
AU  - Milenković, Dragan D.
AU  - Mitrović, Jelena Z.
AU  - Bankovic, Predrag
AU  - Velinov, Nena D.
AU  - Nikolić, Goran
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1811
AB  - Practical aspects of Lagenaria vulgaris shell conversion to activated carbon were examined along with its use in ranitidine adsorption. Kinetics and isotherms of adsorption onto Lagenaria vulgaris carbon (LVC) were correlated to several theoretical adsorption models. The best fit was found in the case of Langmuir and pseudo-second-order model indicating monolayer adsorption. The influence of pH under kinetic study showed slightly hindered adsorption below pH 4. The optimal adsorbent dosage was set to 1 g/L. LVC was characterized by several complementary techniques, including wet chemical techniques such as Boehms titrations and determination of pH(pzc) and pH of LVC, which revealed neutral nature of the adsorbent. N-2 sorptometry determined specific surface area of 665 m(2)/g and significant ratio of micropores in the sample with maximum walls diameter of 2.2 nm. Fourier transform infrared spectroscopy (FTIR) confirmed the role of lignin and cellulose in the formation of the final LVC structure. Porous structure of the material was proved by using scanning electron microscopy. Preparation of LVC material drew attention as an easy and low-cost process for production of a highly efficient adsorbent which exhibited fast kinetics of ranitidine removal in the first minutes of contacting and large adsorption capacity (315.5 mg/g) at equilibrium. (C) 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.
T2  - Arabian Journal of Chemistry
T1  - Characterization of a low cost Lagenaria vulgaris based carbon for ranitidine removal from aqueous solutions
VL  - 10
IS  - 7
SP  - 956
EP  - 964
DO  - 10.1016/j.arabjc.2014.12.018
ER  - 

@article{
author = "Bojić, Danijela V. and Momčilović, Milan Z. and Milenković, Dragan D. and Mitrović, Jelena Z. and Bankovic, Predrag and Velinov, Nena D. and Nikolić, Goran",
year = "2017",
abstract = "Practical aspects of Lagenaria vulgaris shell conversion to activated carbon were examined along with its use in ranitidine adsorption. Kinetics and isotherms of adsorption onto Lagenaria vulgaris carbon (LVC) were correlated to several theoretical adsorption models. The best fit was found in the case of Langmuir and pseudo-second-order model indicating monolayer adsorption. The influence of pH under kinetic study showed slightly hindered adsorption below pH 4. The optimal adsorbent dosage was set to 1 g/L. LVC was characterized by several complementary techniques, including wet chemical techniques such as Boehms titrations and determination of pH(pzc) and pH of LVC, which revealed neutral nature of the adsorbent. N-2 sorptometry determined specific surface area of 665 m(2)/g and significant ratio of micropores in the sample with maximum walls diameter of 2.2 nm. Fourier transform infrared spectroscopy (FTIR) confirmed the role of lignin and cellulose in the formation of the final LVC structure. Porous structure of the material was proved by using scanning electron microscopy. Preparation of LVC material drew attention as an easy and low-cost process for production of a highly efficient adsorbent which exhibited fast kinetics of ranitidine removal in the first minutes of contacting and large adsorption capacity (315.5 mg/g) at equilibrium. (C) 2015 The Authors. Production and hosting by Elsevier B.V. on behalf of King Saud University.",
journal = "Arabian Journal of Chemistry",
title = "Characterization of a low cost Lagenaria vulgaris based carbon for ranitidine removal from aqueous solutions",
volume = "10",
number = "7",
pages = "956-964",
doi = "10.1016/j.arabjc.2014.12.018"
}

Bojić, D. V., Momčilović, M. Z., Milenković, D. D., Mitrović, J. Z., Bankovic, P., Velinov, N. D.,& Nikolić, G.. (2017). Characterization of a low cost Lagenaria vulgaris based carbon for ranitidine removal from aqueous solutions. in Arabian Journal of Chemistry, 10(7), 956-964.
https://doi.org/10.1016/j.arabjc.2014.12.018

Bojić DV, Momčilović MZ, Milenković DD, Mitrović JZ, Bankovic P, Velinov ND, Nikolić G. Characterization of a low cost Lagenaria vulgaris based carbon for ranitidine removal from aqueous solutions. in Arabian Journal of Chemistry. 2017;10(7):956-964.
doi:10.1016/j.arabjc.2014.12.018 .

Bojić, Danijela V., Momčilović, Milan Z., Milenković, Dragan D., Mitrović, Jelena Z., Bankovic, Predrag, Velinov, Nena D., Nikolić, Goran, "Characterization of a low cost Lagenaria vulgaris based carbon for ranitidine removal from aqueous solutions" in Arabian Journal of Chemistry, 10, no. 7 (2017):956-964,
https://doi.org/10.1016/j.arabjc.2014.12.018 . .