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Evaluation of hexavalent chromium reduction by chromate-resistant moderately halophile, Nesterenkonia sp. strain MF2

Paper ID Volume ID Publish Year Pages File Format Full-Text
35812 45107 2007 5 PDF Available
Title
Evaluation of hexavalent chromium reduction by chromate-resistant moderately halophile, Nesterenkonia sp. strain MF2
Abstract

A Gram-positive moderately halophilic chromate reducing bacterial strain was isolated from effluents of tanneries, and identified as Nesterenkonia sp. strain MF2 by phenotypic characterization and 16S rRNA analysis. The strain could tolerate up to 600 mM of chromate and completely reduced 0.2 mM highly toxic and soluble Cr(VI) (as CrO42−) into almost non-toxic and insoluble Cr(III) in 24 h under aerobic condition.The maximum chromate removal was exhibited in 1.5 M NaCl at 35 °C and pH 8.0. Initial Cr(VI) concentration until 0.4 mM did not have a significant effect on Cr(VI) reduction. The isolate was capable of chromate reduction in the presence of various concentrations of salts. The chromate reduction corresponded with growth of bacteria and reached a maximum level at the end of exponential phase.

Keywords
Bioremediation; Chromate reduction; Chromate removal; Moderately halophiles; Nesterenkonia; Toxic oxyanions
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Evaluation of hexavalent chromium reduction by chromate-resistant moderately halophile, Nesterenkonia sp. strain MF2
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 42, Issue 10, October 2007, Pages 1475–1479
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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Price was $35.95
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Full-text PDF Download
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Any Questions? feel free to contact us