TY  - JOUR
AU  - Zavastin, Daniela
AU  - Cretescu, Igor
AU  - Bezdadea, Mariana
AU  - Bourceanu, Militina
AU  - Dragan, Maria
AU  - Lisa, Gabriela
AU  - Mangalagiu, Ionel
AU  - Vasić, Vesna M.
AU  - Savić, Jasmina
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4140
AB  - The characteristics of blend membrane, prepared from cellulose acetate and polyurethane, were investigated in order to compare its properties with membrane material from pure cellulose acetate and polyurethane. Attenuation of total reflection Fourier transform infrared spectroscopy was utilised to investigate structural properties of membranes. Membranes morphology and its thermal properties were characterized by scanning electron microscopy and thermal analysis methods (thermogravimetric analysis, differential thermal analysis and derivated thermogravimetric analysis). Besides, swelling degree, membrane permeability, diameter of membrane pores, its thickness and stability as the function of pH of prepared blend membrane were determined. The applicability of prepared blend membrane was tested by using of aqueous solutions of new textile dye and its complex with iron(III) ions in order to test its suitability for wastewater treatment. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces. A: Physicochemical and Engineering Aspects
T1  - Preparation, characterization and applicability of cellulose acetate-polyurethane blend membrane in separation techniques
VL  - 370
IS  - 1-3
SP  - 120
EP  - 128
DO  - 10.1016/j.colsurfa.2010.08.058
ER  - 

@article{
author = "Zavastin, Daniela and Cretescu, Igor and Bezdadea, Mariana and Bourceanu, Militina and Dragan, Maria and Lisa, Gabriela and Mangalagiu, Ionel and Vasić, Vesna M. and Savić, Jasmina",
year = "2010",
abstract = "The characteristics of blend membrane, prepared from cellulose acetate and polyurethane, were investigated in order to compare its properties with membrane material from pure cellulose acetate and polyurethane. Attenuation of total reflection Fourier transform infrared spectroscopy was utilised to investigate structural properties of membranes. Membranes morphology and its thermal properties were characterized by scanning electron microscopy and thermal analysis methods (thermogravimetric analysis, differential thermal analysis and derivated thermogravimetric analysis). Besides, swelling degree, membrane permeability, diameter of membrane pores, its thickness and stability as the function of pH of prepared blend membrane were determined. The applicability of prepared blend membrane was tested by using of aqueous solutions of new textile dye and its complex with iron(III) ions in order to test its suitability for wastewater treatment. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces. A: Physicochemical and Engineering Aspects",
title = "Preparation, characterization and applicability of cellulose acetate-polyurethane blend membrane in separation techniques",
volume = "370",
number = "1-3",
pages = "120-128",
doi = "10.1016/j.colsurfa.2010.08.058"
}

Zavastin, D., Cretescu, I., Bezdadea, M., Bourceanu, M., Dragan, M., Lisa, G., Mangalagiu, I., Vasić, V. M.,& Savić, J.. (2010). Preparation, characterization and applicability of cellulose acetate-polyurethane blend membrane in separation techniques. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 370(1-3), 120-128.
https://doi.org/10.1016/j.colsurfa.2010.08.058

Zavastin D, Cretescu I, Bezdadea M, Bourceanu M, Dragan M, Lisa G, Mangalagiu I, Vasić VM, Savić J. Preparation, characterization and applicability of cellulose acetate-polyurethane blend membrane in separation techniques. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects. 2010;370(1-3):120-128.
doi:10.1016/j.colsurfa.2010.08.058 .

Zavastin, Daniela, Cretescu, Igor, Bezdadea, Mariana, Bourceanu, Militina, Dragan, Maria, Lisa, Gabriela, Mangalagiu, Ionel, Vasić, Vesna M., Savić, Jasmina, "Preparation, characterization and applicability of cellulose acetate-polyurethane blend membrane in separation techniques" in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 370, no. 1-3 (2010):120-128,
https://doi.org/10.1016/j.colsurfa.2010.08.058 . .

TY  - JOUR
AU  - Cojocaru, Corneliu
AU  - Diaconu, Mariana
AU  - Cretescu, Igor
AU  - Savić, Jasmina
AU  - Vasić, Vesna M.
PY  - 2009
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3636
AB  - The ability of dried yeast Saccharomyces biomass to remove Cu(II) ions from aqueous solutions was investigated by using of batch techniques. The influence of different parameters on copper uptake by dried yeast, such as initial Cu(II) concentration, initial pH of solution and temperature, was studied. The Freundlich, Langmuir, Redlich-Peterson and Sips isotherms were applied to the obtained experimental data. According to Langmuir isotherm the maximum adsorption capacity of investigated non-living biomass was found to be 2.59 mg/g. The thermodynamic parameters (e.g. free energy and enthalpy) were calculated and discussed. The adsorption of Cu(II) onto the dried cells of Saccharomyces cerevisiae is an endothermic process and become more favorable with the increasing of temperature in pH range from 3 to 4. Optimization studies by means of response surface methodology were carried out, which resulted in improvement of the efficiency of sorption removal by using of biomass. The removal efficiency of real wastewater originating from electroplating industry which contains Sn(II) ions was determined and compared with synthetic wastewater obtained in laboratory. (C) 2008 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces. A: Physicochemical and Engineering Aspects
T1  - Biosorption of copper(II) ions from aqua solutions using dried yeast biomass
VL  - 335
IS  - 1-3
SP  - 181
EP  - 188
DO  - 10.1016/j.colsurfa.2008.11.003
ER  - 

@article{
author = "Cojocaru, Corneliu and Diaconu, Mariana and Cretescu, Igor and Savić, Jasmina and Vasić, Vesna M.",
year = "2009",
abstract = "The ability of dried yeast Saccharomyces biomass to remove Cu(II) ions from aqueous solutions was investigated by using of batch techniques. The influence of different parameters on copper uptake by dried yeast, such as initial Cu(II) concentration, initial pH of solution and temperature, was studied. The Freundlich, Langmuir, Redlich-Peterson and Sips isotherms were applied to the obtained experimental data. According to Langmuir isotherm the maximum adsorption capacity of investigated non-living biomass was found to be 2.59 mg/g. The thermodynamic parameters (e.g. free energy and enthalpy) were calculated and discussed. The adsorption of Cu(II) onto the dried cells of Saccharomyces cerevisiae is an endothermic process and become more favorable with the increasing of temperature in pH range from 3 to 4. Optimization studies by means of response surface methodology were carried out, which resulted in improvement of the efficiency of sorption removal by using of biomass. The removal efficiency of real wastewater originating from electroplating industry which contains Sn(II) ions was determined and compared with synthetic wastewater obtained in laboratory. (C) 2008 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces. A: Physicochemical and Engineering Aspects",
title = "Biosorption of copper(II) ions from aqua solutions using dried yeast biomass",
volume = "335",
number = "1-3",
pages = "181-188",
doi = "10.1016/j.colsurfa.2008.11.003"
}

Cojocaru, C., Diaconu, M., Cretescu, I., Savić, J.,& Vasić, V. M.. (2009). Biosorption of copper(II) ions from aqua solutions using dried yeast biomass. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 335(1-3), 181-188.
https://doi.org/10.1016/j.colsurfa.2008.11.003

Cojocaru C, Diaconu M, Cretescu I, Savić J, Vasić VM. Biosorption of copper(II) ions from aqua solutions using dried yeast biomass. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects. 2009;335(1-3):181-188.
doi:10.1016/j.colsurfa.2008.11.003 .

Cojocaru, Corneliu, Diaconu, Mariana, Cretescu, Igor, Savić, Jasmina, Vasić, Vesna M., "Biosorption of copper(II) ions from aqua solutions using dried yeast biomass" in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 335, no. 1-3 (2009):181-188,
https://doi.org/10.1016/j.colsurfa.2008.11.003 . .