New Isolated Extremophiles Arsenic Oxidizing Bacteria for the Removal of Arsenic from High- and Low-COD Media
- سال انتشار: 1400
- محل انتشار: مجله آب و فاضلاب، دوره: 32، شماره: 5
- کد COI اختصاصی: JR_WWJ-32-5_006
- زبان مقاله: فارسی
- تعداد مشاهده: 216
نویسندگان
PhD. Candidate, Dept. of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
Assoc. Prof., Dept. of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
Prof., Dept. of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
Prof., Dept. of Chemical and Civil Engineering, School of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
Prof., Dept. of Water Engineering, School of Agriculture, Shiraz University, Shiraz, Iran
چکیده
There is an urgent need for the removal of arsenic (As) from groundwater and wastewater as it is a very hazardous heavy metal for human and environmental health. In this research, As-resistant and oxidizing bacteria were isolated from the Maharloo Lake (۲۷ km southeast of Shiraz city) and identified to a great extent. Three isolated bacillus-shaped strains (called F۵, F۶ and F۷) tolerated up to ۱ M AsNaO۲, grew up to ۳.۵ M NaCl and pH ۱۲, and consumed NaSCN and Na۲S۲O۳. The molecular analysis confirmed the originality of the strains to a high extent. The As absorption rate by these bacteria was measured by the atomic absorption method, and their effect was examined on a water sample from the south of Kerman city (Iran) and a synthetic wastewater sample with a chemical oxygen demand (COD) of about ۱۸۰,۰۰۰ kg/m۳ that was able to absorb high levels of arsenic.کلیدواژه ها
Extremophile, ARSENIC, Industrial Wastewater, Alkaliphilic, Maharloo Lakeاطلاعات بیشتر در مورد COI
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