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Kinetic Study Of Biosorption And Bioreduction Of Hexavalent Chromium By Unmodified Sawdust

By Zhung Gia Ng

Abstract

The effects of initial Cr(VI) concentration, initial pH and sawdust dosage on Cr(VI) biosorption-bioreduction were evaluated at the initial Cr(VI) concentration range of 250 -1500 μM, pH range of 2.0 - 4.0 and dosage range of 2 – 4 g L-1, respectively. The effects of phenol and Zn(II) were evaluated at the Cr(VI):phenol and Cr(VI):Zn(II) molar ratios of 1:0, 2:1, 1:1, 1:3 and 1:5. A control experiment was conducted under the conditions: initial Cr(VI) concentration of 500 μM, initial pH of 2.0, sawdust dosage of 4 g L-1, shaking speed of 250 rpm and temperature of 25 (±1) oC to show that Cr(VI) removal by sawdust involved biosorption and bioreduction

Topics: TP1-1185 Chemical technology
Year: 2013
OAI identifier: oai:generic.eprints.org:46301/core423
Provided by: Repository@USM

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