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Iranian Journal of Chemistry and Chemical Engineering، جلد ۲۵، شماره ۳، صفحات ۷۳-۷۸
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عنوان انگلیسی Biodegradation of Polycyclic Aromatic Hydrocarbons by Aerobic Mixed Bacterial Culture Isolated from Hydrocarbon Polluted Soils
چکیده انگلیسی مقاله In this study, the degradation potential of five polycyclic aromatic hydrocarbons (PAHs) by aerobic mixed bacterial cultures was investigated. Microorganisms were isolated from hydrocarbon contaminated soils of Shadegan wetland located in southwest of Iran. The degradation experiments were conducted in liquid cultures. PAH or PAHs concentration was 100 mg/L at the beginning of degradation experiments. After ten days incubation, the mixed culture was capable of degrading phenanthrene completely and anthracene 80%, pyrene 60%, fluorene 30%, and fluoranthene 20%, individually. Optimal temperature and pH were as 30 °C and 7.0 respectively. Results showed that in samples containing a mixture of the five PAHs, fluoranthene could degrade cometabolically and the rate of degradation increased from 20 to 44%. It was observed also that PAHs degradation could be enhanced by the individual addition of yeast extract or glucose. The isolated mixed culture is valuable in bioremediation of PAH-contaminated environments.
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نویسندگان مقاله پرویز شفیعی |
chemical engineering department, biotechnology group, tarbiat modarres university, p.o. box 14155-143 tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

سید عباس شجاع الساداتی | sayed abbas
chemical engineering department, biotechnology group, tarbiat modarres university, p.o. box 14155-143 tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

امیرحسین چرخابی | amir hossein
chemical engineering department, biotechnology group, tarbiat modarres university, p.o. box 14155-143 tehran, i.r. iran
سازمان اصلی تایید شده: دانشگاه تربیت مدرس (Tarbiat modares university)

نشانی اینترنتی http://www.ijcce.ac.ir/article_8052_64b49eb6543ed965cd326da9fdb36e0b.pdf
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