کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4483904 1316903 2007 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of bacterial activity on estrogen removal in nitrifying activated sludge
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Effects of bacterial activity on estrogen removal in nitrifying activated sludge
چکیده انگلیسی

The effects of bacterial activity on the degradation of estrone (E1), estradiol (E2), estriol (E3) and ethinylestradiol (EE2) in nitrifying activated sludge (NAS) were studied with different substrates and organic loading rates (OLRs) and low temperature conditions. Heterotroph was shown to have utilized glucose prior to E1 for metabolism. The co-metabolism of ammonia oxidizing bacteria (AOB) dominated the degradation of E1, E2 and EE2 in NAS. The higher the organic loading, the higher the rate of organic matter transformation, with less ammonia oxidation and less degradation of E1, E2 and EE2. The degradation of E3 in NAS was shown to be largely due to heterotroph metabolism. On the basis of the difference of apparent activity between heterotroph and AOB at 4 °C, the process of estrogen degradation via the co-metabolism of AOB was able to be identified.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Water Research - Volume 41, Issue 14, July 2007, Pages 3089–3096
نویسندگان
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