کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
583030 | 877865 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fate of copper in submerged membrane bioreactors treating synthetic municipal wastewater
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
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چکیده انگلیسی
This paper assesses the impact of copper on the performance of two membrane bioreactors (MBR) treating municipal wastewater at a hydraulic retention time (HRT) of 4 h, and solids residence times (SRT) of 20 days, at influent copper concentrations of 0.2-8 mg Cu/L. The addition of copper resulted in a significant increase in soluble microbial products (SMPs), and a predominance of >100 kDa molecular weight SMPs. The study showed that in well-buffered wastewaters, complete nitrification was achieved at total copper concentrations as high as 840 mg/L or 10% of the mixed liquor volatile suspended solids. MINTEQ simulation showed that most of the copper (99.8%) in the MBR was in the form of inorganic copper precipitates, with free Cu2+ and total soluble copper in the range of 0.0-0.11 and 0.1-0.82 mg/L, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 153, Issue 3, 30 May 2008, Pages 984-990
Journal: Journal of Hazardous Materials - Volume 153, Issue 3, 30 May 2008, Pages 984-990
نویسندگان
George Nakhla, Ladan Holakoo, Ernest Yanful, Amarjeet Bassi,