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Adsorptive Removal of Chromium(VI) from Aqueous Solution by an Agricultural Waste-Based Activated Carbon

Chaudhuri, M. and Azizan, N. K. B. (2012) Adsorptive Removal of Chromium(VI) from Aqueous Solution by an Agricultural Waste-Based Activated Carbon. Water, Air, & Soil Pollution, 223 (4). pp. 1765-1771. ISSN 0049-6979

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Abstract

Activated carbon was prepared from an agricultural waste, coconut coir, and its characteristics were compared with that of a commercial bituminous coal-based activated carbon. The activated carbon possessed higher surface area, micropore area, micropore volume and average pore diameter, and well-developed meso- and micropores. Batch test on adsorption of chromium(VI) by the coconut coir activated carbon showed that the extent of chromium(VI) adsorption was dependent on chromium(VI) concentration, contact time, pH and activated carbon dose. Maximum adsorption occurred at pH 1.0–2.0 and equilibrium adsorption was attained in 2.5 h. Chromium(VI) adsorption followed pseudo second-order kinetics. Equilibrium chromium(VI) adsorption data for the coconut coir activated carbon and the commercial activated carbon were described by the Langmuir and Freundlich isotherm models and indicated higher chromium(VI) adsorption capacity of the coconut coir activated carbon. Chromium(VI) adsorption capacity of the coconut coir activated carbon was compared with that of activated carbon prepared from different waste material and bituminous coal.

Item Type:Article
Impact Factor:1.765
Subjects:T Technology > TD Environmental technology. Sanitary engineering
Departments / MOR / COE:Departments > Civil Engineering
ID Code:7685
Deposited By: Prof Malay Chaudhuri
Deposited On:07 May 2012 04:54
Last Modified:08 Apr 2014 11:24

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