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JSIR Vol.66(11) [November 2007] >


Title: Kinetic characterization of removal of As (III) by mixed adsorbents
Authors: Singh, A P
Srivastava, K K
Shekhar, H
Keywords: Activation energy of adsorption
Adsorption kinetics
Mixed adsorbents
Issue Date: Nov-2007
Publisher: CSIR
Abstract: Adsorption kinetics for removal of arsenic was carried out by red mud and its mixtures with haematite, china clay and fly ash besides china clay-fly ash at: adsorbate conc., 5.0 mg1-1; particle size of adsorbent, <53 μm; agitation rate, 220 rpm; pH, 8.0; and temp., 30, 40 & 50°C. Data fit into Lagergren equation and adsorption follows first order reaction kinetics. As(III) removal by adsorbents is diffusion controlled. A low value of activation energy indicates flat nature of energy barrier.
Page(s): 952-956
ISSN: 0022-4456
Source:JSIR Vol.66(11) [November 2007]

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