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Journal of Scientific and Industrial Research (JSIR) >
JSIR Vol.71 [2012] >
JSIR Vol.71(04) [April 2012] >
| 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 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1084 (Online); 0022-4456 (Print) |
| Source: | JSIR Vol.71(04) [April 2012]
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