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|Title:||Regeneration of chitosan after heavy metal sorption|
|Abstract:||This study presents desorption of Cr(VI) ions from chitosan by various eluants (dilute mineral acids and organic acids). A maximum of 88% of Cr (VI) was desorbed from metal loaded chitosan with 0.1 M H2SO4 without any physical damage to adsorbent. Numerical optimization has been carried out by a central composite design (CCD) in response surface methodology (RSM). Chitosan was regenerated by successive washing with deionised water many times until a neutral pH was obtained. Regenerated adsorbent/chitosan was dried and used to initiate another cycle of sorption and desorption. Absence of noticeable change in adsorption capacities of reused adsorbent confirms reusable potential of chitosan.|
|ISSN:||0975-1084 (Online); 0022-4456 (Print)|
|Appears in Collections:||JSIR Vol.71(04) [April 2012]|
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