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Laboratory scale column studies on transport and biotransformation of Cr(VI) through porous media in presence of CRB, SRB and IRB
, V. Somasundaram,
Published in Elsevier B.V.
2011
Volume: 171
   
Issue: 2
Pages: 572 - 581
Abstract
Studies were conducted to understand the transport and biotransformation of Cr(VI) through porous media in presence of chromium reducing bacteria (CRB), sulphate reducing bacteria (SRB) and iron reducing bacteria (IRB). Column experiments were conducted using sand and soil, and different bacterial strains working individually and in combination. Results showed that 20. mg/L of Cr(VI) in the feed was completely contained within 500-648. h by different combinations of bacterial strains. A one-dimensional mathematical model, based on advection-dispersion-adsorption equations for transport of Cr(VI) and molasses in saturated, homogeneous porous medium, coupled with Monod's inhibition kinetics for immobile bacteria was able to simulate the experimental results satisfactorily. The proposed mathematical model will be very helpful in the development of a management model for in situ bioremediation of chromium contaminated aquifers using either reactive zones or bio-barriers. © 2011 Elsevier B.V.
About the journal
JournalData powered by TypesetChemical Engineering Journal
PublisherData powered by TypesetElsevier B.V.
ISSN13858947
Open AccessNo
Concepts (18)
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    Biotransformation
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    Contaminant transport
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    Hexavalent chromium
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    IRON REDUCING BACTERIA
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    SULPHATE REDUCING BACTERIA
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    Adsorption
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    Aquifers
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    Bacteria
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    Bacteriology
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    Bioconversion
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    Bioremediation
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    Chromium
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    Chromium compounds
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    Groundwater pollution
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    Hydrogeology
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    Porous materials
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    Mathematical models
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    Bacteria (microorganisms)