Kinetic Study Of Biosorption And Bioreduction Of Hexavalent Chromium By Unmodified Sawdust
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Date
2013-12
Authors
Ng, Zhung Gia
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
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.
Description
Keywords
Biosorption And Bioreduction , Hexavalent Chromium