Online citations, reference lists, and bibliographies.
← Back to Search

Kinetics Of Bioreduction Of Hexavalent Chromium By Poly Vinyl Alcohol-alginate Immobilized Cells Of Ochrobactrum Sp. Cr-B4 And Comparison With Free Cells

A. Hora, V. Shetty
Published 2016 · Chemistry

Cite This
Download PDF
Analyze on Scholarcy
AbstractThe cells of Ochrobactrum sp. Cr-B4 immobilized in PVA-alginate blended matrix could be successfully used for bioreduction of Cr(VI) from contaminated water. The removal mechanism included adsorption on solid-liquid interface and enzyme catalyzed chromate reduction. At lower concentrations the initial rate of Cr(VI) reduction with immobilized cells was found to be slightly higher than that of free cells owing to adsorption on the immobilization matrix. But after a certain time the rate of Cr(VI) reduction by free and immobilized cells was similar. The estimation of effectiveness factor (η), indicated that there were no diffusional limitations offered by the immobilization of Cr-B4 as the value of η was fond to be near “one” at different concentrations of Cr(VI). The kinetic analysis showed that both free and immobilized cells followed Michaelis–Menten kinetics with Km and Vmax of 456.1 mg/L and 14.67 mg/L/h for free cells respectively; 499.4 mg/L and 15.32 mg/L/h for immobilized cells respectively...
This paper references
A review of chemical, electrochemical and biological methods for aqueous Cr(VI) reduction.
C. Barrera-Díaz (2012)
Chromium Tolerance and Reduction Potential of a Bacillus sp.ev3 Isolated from Metal Contaminated Wastewater
A. Rehman (2008)
Reduction of Cr(VI) by immobilized cells of Desulfovibrio vulgaris NCIMB 8303 and Microbacterium sp. NCIMB 13776.
A. Humphries (2005)
In Vitro Reduction of Hexavalent Chromium by Cytoplasmic Fractions of Pannonibacter phragmitetus LSSE-09 under Aerobic and Anaerobic Conditions
L. Xu (2011)
Chromate reduction by Serratia marcescens immobilized on activated carbon
J.P.F. De Bruijn (2000)
Cr(VI) reduction by Bacillus sp. isolated from chromium landfill
Y. Liu (2006)
Simultaneous Cr(VI) reduction and phenol degradation in pure cultures of Pseudomonas aeruginosa CCTCC AB91095.
Huaxiao Song (2009)
Effect of complexing agents on reduction of Cr(VI) by Desulfovibrio vulgaris ATCC 29579.
A. N. Mabbett (2002)
Chromium(VI) reduction in a membrane bioreactor with immobilized Pseudomonas cells
V. V. Konovalova (2003)
New Approaches for Bioaugmentation as a Remediation Technology
T. Gentry (2004)
Hexavalent chromate reduction by immobilized Streptomyces griseus
Ashwini C. Poopal (2008)
Reduction of hexavalent chromium by a novel Ochrobactrum sp. – microbial characteristics and reduction kinetics
M. Narayani (2014)
Bioprocess Engineering: Basic Concepts
M. Shuler (1991)
Chromate reduction and 16S rRNA identification of bacteria isolated from a Cr(VI)-contaminated site
P. Pattanapipitpaisal (2001)
Bioremediation of toxic chromium from electroplating effluent by chromate-reducing Pseudomonas aeruginosa A2Chr in two bioreactors
A. Ganguli (2001)
Chemical and microbial remediation of hexavalent chromium from contaminated soil and mining/metallurgical solid waste: a review.
B. Dhal (2013)
Bioreduction of Cr (VI) by potent novel chromate resistant alkaliphilic Bacillus sp. strain KSUCr5 isolated from hypersaline Soda lakes
A. S. Ibrahim (2011)
Experimental Investigation and Artificial Neural Network-Based Modeling of Batch Reduction of Hexavalent Chromium by Immobilized Cells of Newly Isolated Strain of Chromium-Resistant Bacteria
V. Shetty K. (2011)
Chromate Reduction in Serratia marcescens Isolated from Tannery Effluent and Potential Application for Bioremediation of Chromate Pollution
M.A. Mondaca (2002)
Isolation and Characterization of Hexavalent Chromium-Reducing Rhizospheric Bacteria From a Wetland
A. M. Gutiérrez (2010)
Hexavalent chromium reduction by immobilized cells of Bacillus sphaericus AND 303
Arundhati Pal (2013)
Hexavalent Chromium Reduction by Immobilized Cells and the Cell-Free Extract of Bacillus sp. ES 29
F. Camargo (2004)
Relationship of Hydrogen Bioavailability to Chromate Reduction in Aquifer Sediments
T. Marsh (2001)
Immobilization of Acidithiobacillus ferrooxidans with complex of PVA and sodium alginate
Wang Yu-jian (2006)
Chromate Reduction by a Pseudomonad Isolated from a Site Contaminated with Chromated Copper Arsenate
J. McLean (2001)
Hexavalent Chromium Reduction by Free and Immobilized Cell-free Extract of Arthrobacter rhombi-RE
R. Elangovan (2010)

This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar