کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7066241 | 1459878 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reduction of AOX in pharmaceutical wastewater in the cathode chamber of bio-electrochemical reactor
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
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چکیده انگلیسی
A bio-electrochemical reactor (BER) operating at different cathode potentials ranging from â300 to â1000â¯mV (vs standard hydrogen electrode, SHE) was used to reduce adsorbable organic halogens (AOX) in pharmaceutical wastewater. Cathode polarization enriched the electron donor of the biological system. Thus, the AOX removal efficiency in the BER improved from 59.9% to 70.2%, and the AOX removal rate increased from 0.87 to 1.17â¯mg AOX/h when the cathode potential was reduced from â300 to â1000â¯mV with the addition of methyl viologen, a known redox mediator. The decrease of the cathode potential was also beneficial for methane production, and the inhibition of the methanogenic process enhanced the AOX removal. Additionally, cathode coulombic efficiency analysis demonstrated that the proportion of electrons used for AOX reduction decreases with decreasing potential, from 37.6% at â300â¯mV to 17.3% at â1000â¯mV, although the AOX removal efficiency improves.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 265, October 2018, Pages 437-442
Journal: Bioresource Technology - Volume 265, October 2018, Pages 437-442
نویسندگان
Yawei Xie, Lujun Chen, Rui Liu, Jinping Tian,