Low-cost adsorbent derived from the coconut shell for the removal of hexavalent chromium from aqueous medium

Chandana, L and Krushnamurty, Killi and Suryakala, Duvvuri and Subrahmanyam, Ch (2019) Low-cost adsorbent derived from the coconut shell for the removal of hexavalent chromium from aqueous medium. Materials Today: Proceedings. ISSN 22147853

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Abstract

A bio-adsorbent was derived from the coconut shells and surface modification of the adsorbent was done by physical activation by using carbon dioxide (CO2), ozone (O3) and steam (H2O). The consequence of physical activation on the physicochemical properties was analyzed by N2 adsorption, thermogravimetric analysis (TGA) and temperature programmed decomposition (TPD). Typical results indicated that the physical activation of carbon is an efficient approach for the removal of heavy metal Cr(VI) from the aqueous solution and the best adsorption was achieved at pH 2.0. The equilibrium studies indicated that Cr(VI) adsorption follows Langmuir adsorption isotherm and pseudo-2nd-order kinetics.

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IITH Creators:
IITH CreatorsORCiD
Subrahmanyam, ChUNSPECIFIED
Item Type: Article
Subjects: Chemistry
Divisions: Department of Chemistry
Depositing User: Team Library
Date Deposited: 15 Jul 2019 04:04
Last Modified: 15 Jul 2019 04:04
URI: http://raiith.iith.ac.in/id/eprint/5720
Publisher URL: http://doi.org/10.1016/j.matpr.2019.04.205
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