کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7082292 | 1460001 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Mediators-assisted reductive biotransformation of tetrabromobisphenol-A by Shewanella sp. XB
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
The anaerobic biotransformation of tetrabromobisphenol A (TBBPA) was mainly observed in the consortia so far. The role of redox mediators in anaerobic TBBPA biotransformation by Shewanella sp. distributed widely in environments was investigated for the first time. The results showed the flavins secretion of Shewanella sp. XB was highly dependent on initial TBBPA concentration. The corresponding first-order rate constants (k) of TBBPA transformation decreased to 0.007Â dâ1 when TBBPA concentration increased up to 80Â mg/L. Moreover, the removal rate of TBBPA (80Â mg/L) was significantly enhanced in treatments amended with cyanocobalamin, riboflavin, 2-hydroxy-1,4-naphthoquinone and Aldrich humic acid with k values of 0.42, 0.19, 0.16, and 0.07Â dâ1, respectively. In addition, some redox proteins were secreted and played a role in flavins-mediated extracellular biotransformation of TBBPA by Shewanella sp. XB. These findings are beneficial to better understand TBBPA fate in natural environments and to develop efficient biotreatment strategies of TBBPA pollutions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 142, August 2013, Pages 192-197
Journal: Bioresource Technology - Volume 142, August 2013, Pages 192-197
نویسندگان
Jing Wang, Zhenzhen Fu, Guangfei Liu, Ning Guo, Hong Lu, Yaoyao Zhan,