Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid
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Milosavljevic, Nedeljko B.Ristić, Mirjana
Perić-Grujić, Aleksandra A.
Filipović, Jovanka M.
Štrbac, Svetlana
Rakočević, Zlatko Lj.
Kalagasidis Krušić, Melina
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Novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid were applied as adsorbents for the removal of Zn(2+) ions from aqueous solution. In batch tests, the influence of solution pH, contact time, initial metal ion concentration and temperature was examined. The sorption was found pH dependent, pH 5.5 being the optimum value. The adsorption process was well described by the pseudosecond order kinetic. The hydrogels were characterized by spectral (Fourier transform infrared-FTIR) and structural (SEM/EDX and atomic force microscopy-AFM) analyses. The surface topography changes were observed by atomic force microscopy, while the changes in surface composition were detected using phase imaging AFM. The negative values of free energy and enthalpy indicated that the adsorption is spontaneous and exothermic one. The best fitting isotherms were Langmuir and Redlich-Peterson and it was found that both linear and nonlinear methods were appropriate for obtaining the iso...therm parameters. However, the increase of temperature leads to higher adsorption capacity, since swelling degree increased with temperature. (C) 2011 Elsevier B.V. All rights reserved.
Keywords:
Hydrogel / Kinetic model / Adsorption isotherm / Separation / Atomic force microscopySource:
Journal of Hazardous Materials, 2011, 192, 2, 846-854Funding / projects:
- Synthesis and characterization of novel functional polymers and polymeric nanocomposites (RS-MESTD-Basic Research (BR or ON)-172062)
- Development and Application of Methods and Materials for Monitoring New Organic Contaminants, Toxic Compounds and Heavy Metals (RS-MESTD-Basic Research (BR or ON)-172007)
DOI: 10.1016/j.jhazmat.2011.05.093
ISSN: 0304-3894
PubMed: 21703762
WoS: 000293314000055
Scopus: 2-s2.0-79960164022
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VinčaTY - JOUR AU - Milosavljevic, Nedeljko B. AU - Ristić, Mirjana AU - Perić-Grujić, Aleksandra A. AU - Filipović, Jovanka M. AU - Štrbac, Svetlana AU - Rakočević, Zlatko Lj. AU - Kalagasidis Krušić, Melina PY - 2011 UR - https://vinar.vin.bg.ac.rs/handle/123456789/4438 AB - Novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid were applied as adsorbents for the removal of Zn(2+) ions from aqueous solution. In batch tests, the influence of solution pH, contact time, initial metal ion concentration and temperature was examined. The sorption was found pH dependent, pH 5.5 being the optimum value. The adsorption process was well described by the pseudosecond order kinetic. The hydrogels were characterized by spectral (Fourier transform infrared-FTIR) and structural (SEM/EDX and atomic force microscopy-AFM) analyses. The surface topography changes were observed by atomic force microscopy, while the changes in surface composition were detected using phase imaging AFM. The negative values of free energy and enthalpy indicated that the adsorption is spontaneous and exothermic one. The best fitting isotherms were Langmuir and Redlich-Peterson and it was found that both linear and nonlinear methods were appropriate for obtaining the isotherm parameters. However, the increase of temperature leads to higher adsorption capacity, since swelling degree increased with temperature. (C) 2011 Elsevier B.V. All rights reserved. T2 - Journal of Hazardous Materials T1 - Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid VL - 192 IS - 2 SP - 846 EP - 854 DO - 10.1016/j.jhazmat.2011.05.093 ER -
@article{ author = "Milosavljevic, Nedeljko B. and Ristić, Mirjana and Perić-Grujić, Aleksandra A. and Filipović, Jovanka M. and Štrbac, Svetlana and Rakočević, Zlatko Lj. and Kalagasidis Krušić, Melina", year = "2011", abstract = "Novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid were applied as adsorbents for the removal of Zn(2+) ions from aqueous solution. In batch tests, the influence of solution pH, contact time, initial metal ion concentration and temperature was examined. The sorption was found pH dependent, pH 5.5 being the optimum value. The adsorption process was well described by the pseudosecond order kinetic. The hydrogels were characterized by spectral (Fourier transform infrared-FTIR) and structural (SEM/EDX and atomic force microscopy-AFM) analyses. The surface topography changes were observed by atomic force microscopy, while the changes in surface composition were detected using phase imaging AFM. The negative values of free energy and enthalpy indicated that the adsorption is spontaneous and exothermic one. The best fitting isotherms were Langmuir and Redlich-Peterson and it was found that both linear and nonlinear methods were appropriate for obtaining the isotherm parameters. However, the increase of temperature leads to higher adsorption capacity, since swelling degree increased with temperature. (C) 2011 Elsevier B.V. All rights reserved.", journal = "Journal of Hazardous Materials", title = "Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid", volume = "192", number = "2", pages = "846-854", doi = "10.1016/j.jhazmat.2011.05.093" }
Milosavljevic, N. B., Ristić, M., Perić-Grujić, A. A., Filipović, J. M., Štrbac, S., Rakočević, Z. Lj.,& Kalagasidis Krušić, M.. (2011). Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid. in Journal of Hazardous Materials, 192(2), 846-854. https://doi.org/10.1016/j.jhazmat.2011.05.093
Milosavljevic NB, Ristić M, Perić-Grujić AA, Filipović JM, Štrbac S, Rakočević ZL, Kalagasidis Krušić M. Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid. in Journal of Hazardous Materials. 2011;192(2):846-854. doi:10.1016/j.jhazmat.2011.05.093 .
Milosavljevic, Nedeljko B., Ristić, Mirjana, Perić-Grujić, Aleksandra A., Filipović, Jovanka M., Štrbac, Svetlana, Rakočević, Zlatko Lj., Kalagasidis Krušić, Melina, "Sorption of zinc by novel pH-sensitive hydrogels based on chitosan, itaconic acid and methacrylic acid" in Journal of Hazardous Materials, 192, no. 2 (2011):846-854, https://doi.org/10.1016/j.jhazmat.2011.05.093 . .