Hexavalent Chromium Reduction from Pollutant Samples by Achromobacter xylosoxidans SHB 204 and its Kinetics Study

Cr(VI) is most toxic heavy metal and second most widespread hazardous metal compound worldwide. Present work focused on Cr(VI) reduction from synthetic solutions and polluted samples by Achromobacter xylosoxidans SHB 204. It could tolerate Cr(VI) up to 1600 ppm and reduce 500 ppm with 4.5 chromium r...

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Bibliographic Details
Published in:Indian journal of microbiology 2017-09, Vol.57 (3), p.292-298
Main Authors: Tadishetty Hanumanth Rao, Swapna, Papathoti, Narendra Kumar, Gundeboina, Ravi, Mohamed, Yahya Khan, Mudhole, Gopal Reddy, Bee, Hameeda
Format: Article
Language:English
Subjects:
Achromobacter
Biomass
Biomedical and Life Sciences
Bioremediation
Chromium
Heavy metals
Hexavalent chromium
Life Sciences
Medical Microbiology
Microbiology
Original
Original Article
Pollutants
Pollution control
Reductase
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Summary:Cr(VI) is most toxic heavy metal and second most widespread hazardous metal compound worldwide. Present work focused on Cr(VI) reduction from synthetic solutions and polluted samples by Achromobacter xylosoxidans SHB 204. It could tolerate Cr(VI) up to 1600 ppm and reduce 500 ppm with 4.5 chromium reductase enzyme units (U) having protein size 30 kDa. Changes in morphology of cells on interaction with Cr(VI) metal ion was also studied using SEM–EDX and FTIR. Microcosm studies in pollutant samples for Cr(VI) reduction and adsorption isotherm with biomass of bacterium was best fitted with Langmuir model along with kinetic studies. This study focuses on significance of Cr reduction from synthetic solutions and polluted samples by A. xylosoxidans SHB 204 and its potential for bioremediation.
ISSN:0046-8991
0973-7715
DOI:10.1007/s12088-017-0654-4