New heterocycle modified chitosan adsorbent for metal ions (II) removal from aqueous systems

Nadia G. Kandile∗, Hemat M. Mohamed, Mansoura I. Mohamed ; ismail, mansoura 


Abstract


A new hydrogel based on a modified chitosan CS-B was synthesized and evaluated for its metal ion removal from aqueous systems. The CS-B hydrogel was prepared through modification of chitosan with 4- ((1, 3-dioxoisoindolin-2-ylimino) methyl) benzaldehyde as a heterocyclic component. The new hydrogel was analyzed by diverse techniques such as FTIR, XRD, TGA, SEM, and swelling tests. The adsorption capacity of CS-B for metal ions Co2+, Hg2+, Cu2+, Zn2+, and Pb2+ from aqueous systems at different pH values showed various levels of efficiency. The metal ion uptake data over a range of pH values for Co2+ and Hg2+ showed the highest adsorption capacity while Cu2+, Zn2+, and Pb2+ showed moderate adsorption capacity. Selective metal ion efficiency was highest for Co2+ and lowest for Hg2+ in their binary mixture.


Other data

Keywords Modified chitosan Hydrogel Heterocycle Metal uptake Swelling
Issue Date 2015
Journal International Journal of Biological Macromolecules 
Description A new hydrogel based on a modified chitosan CS-B was synthesized and evaluated for its metal ion removal from aqueous systems. The CS-B hydrogel was prepared through modification of chitosan with 4- ((1, 3-dioxoisoindolin-2-ylimino) methyl) benzaldehyde as a heterocyclic component. The new hydrogel was analyzed by diverse techniques such as FTIR, XRD, TGA, SEM, and swelling tests. The adsorption capacity of CS-B for metal ions Co2+, Hg2+, Cu2+, Zn2+, and Pb2+ from aqueous systems at different pH values showed various levels of efficiency. The metal ion uptake data over a range of pH values for Co2+ and Hg2+ showed the highest adsorption capacity while Cu2+, Zn2+, and Pb2+ showed moderate adsorption capacity. Selective metal ion efficiency was highest for Co2+ and lowest for Hg2+ in their binary mixture.
URI http://research.asu.edu.eg/handle/123456789/2382
DOI org/10.1016/j.ijbiomac.2014.07.042


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