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Title: Regeneration of chitosan after heavy metal sorption
Authors: Bhuvaneshwari, S
Sruthi, D
Sivasubramanian, V
Kanthimathy, K
Keywords: Chitosan;Cr(VI);Desorption;Regenerated Adsorbent
Issue Date: Apr-2012
Publisher: NISCAIR-CSIR, India
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.
Page(s): 266-269
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.71(04) [April 2012]

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