COMPARATIVE STUDY OF ADSORPTION CAPACITY OF CHITOSAN HYDROGEL CROSSLINKED WITH FORMALDEHYDE AND GLUTERALDEHYDE AGAINST HEAVY METALS.
- Department of Chemistry, SHIATS, Allahabad.
- Department of Chemistry, MNNIT, Allahabad.
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Chitin is a biopolymer, found in the crustacean. Chitin on deacetylation yield chitosan .In this study Chitosan hydrogel film used as adsorbent for removal of heavy metals. Chitosan hydrogel cross linked with formaldehyde and gluteraldehyde are used for removal of copper and nickel. FT-IR spectra show the attachment of new group in the chitosan hydrogel after cross linking. The swelling behavior of hydrogel ranges from 16% to 157% chitosan hydrogel, chitosan hydrogel cross-linked with formaldehyde shows swelling 21% 201% and chitosan hydrogel cross-linked with gluteraldehyde shows swelling 34% to 218%. The percentage removal of copper from both the cross-linked hydrogel is higher with respect to pH. Adsorption isotherm Langmuir and Freundlich is calculated with respect to contact time and pH.
[Varsha Bajpai, Manisha Prasad and S.S. Narvi. (2016); COMPARATIVE STUDY OF ADSORPTION CAPACITY OF CHITOSAN HYDROGEL CROSSLINKED WITH FORMALDEHYDE AND GLUTERALDEHYDE AGAINST HEAVY METALS. Int. J. of Adv. Res. 4 (Dec). 515-519] (ISSN 2320-5407). www.journalijar.com
M.Sc. Chemistry, SHIATS,Allahabad
