Simultaneous Cr(VI) reduction and phenol degradation using Stenotrophomonas sp. isolated from tannery effluent contaminated soil

This study presents simultaneous hexavalent chromium (Cr(VI)) reduction and phenol degradation using Stenotrophomonas sp., isolated from tannery effluent contaminated soil. Phenol was used as the sole carbon and energy source for Cr(VI) reduction. The optimization of different operating parameters w...

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Veröffentlicht in:Environmental science and pollution research international 2013-09, Vol.20 (9), p.6563-6573
Hauptverfasser: Gunasundari, Dharmaraj, Muthukumar, Karuppan
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creator Gunasundari, Dharmaraj
Muthukumar, Karuppan
description This study presents simultaneous hexavalent chromium (Cr(VI)) reduction and phenol degradation using Stenotrophomonas sp., isolated from tannery effluent contaminated soil. Phenol was used as the sole carbon and energy source for Cr(VI) reduction. The optimization of different operating parameters was done using Placket–Burman design (PBD) and Box–Behnken design (BBD). The significant operating variables identified by PBD were initial Cr(VI) and phenol concentration, pH, temperature, and reaction time. These variables were optimized by a three-level BBD and the optimum initial Cr(VI) concentration, initial phenol concentration, pH, temperature, and reaction time obtained were 16.59 mg/l, 200.05 mg/l, 7.38, 31.96 °C and 4.07 days, respectively. Under the optimum conditions, 81.27 % Cr(VI) reduction and 100 % phenol degradation were observed experimentally. The results concluded that the Stenotrophomonas sp. could be used to decontaminate the effluents containing Cr(VI) and phenol effectively.
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Phenol was used as the sole carbon and energy source for Cr(VI) reduction. The optimization of different operating parameters was done using Placket–Burman design (PBD) and Box–Behnken design (BBD). The significant operating variables identified by PBD were initial Cr(VI) and phenol concentration, pH, temperature, and reaction time. These variables were optimized by a three-level BBD and the optimum initial Cr(VI) concentration, initial phenol concentration, pH, temperature, and reaction time obtained were 16.59 mg/l, 200.05 mg/l, 7.38, 31.96 °C and 4.07 days, respectively. Under the optimum conditions, 81.27 % Cr(VI) reduction and 100 % phenol degradation were observed experimentally. The results concluded that the Stenotrophomonas sp. could be used to decontaminate the effluents containing Cr(VI) and phenol effectively.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer Berlin Heidelberg</pub><pmid>23608988</pmid><doi>10.1007/s11356-013-1718-6</doi><tpages>11</tpages></addata></record>
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1614-7499
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source MEDLINE; SpringerNature Journals
subjects Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Bacteria
Biodegradation, Environmental
Carbon
Chromium
Chromium - chemistry
Contamination
Degradation
Earth and Environmental Science
Ecotoxicology
Effluents
Energy sources
Environment
Environmental Chemistry
Environmental Health
Heavy metals
Industrial Waste - analysis
Industrial wastes
Leather & leather products
Metals
Microorganisms
Optimization
Phenol
Phenols
Phenols - chemistry
Phenols - metabolism
Phylogeny
Pollutants
Reaction time
Reduction
Reproducibility of Results
Research Article
Soil contaminants
Soil contamination
Soil degradation
Soil Pollutants - chemistry
Soil pollution
Stenotrophomonas
Stenotrophomonas - drug effects
Stenotrophomonas - genetics
Stenotrophomonas - metabolism
Tanneries
Tannery wastes
Tanning
Temperature
Time Factors
Waste Disposal, Fluid - methods
Waste materials
Waste Water Technology
Water Management
Water Pollution Control
title Simultaneous Cr(VI) reduction and phenol degradation using Stenotrophomonas sp. isolated from tannery effluent contaminated soil
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