کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7072244 1459937 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Is the chronic impact of sulfamethoxazole different for slow growing culture? The effect of culture history
ترجمه فارسی عنوان
آیا اثر مزمن سولفامتوکسازول برای کشت آهسته رشد می کند؟ اثر تاریخ فرهنگ
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
The study evaluated impact of sulfamethoxazole on acetate utilization kinetics and microbial community structure using respirometric analysis and pyrosequencing. A fill and draw reactor fed with acetate was sustained at a sludge age of 10 days. Acute impact was assessed by modeling of respirometric data in batch reactors started with sulfamethoxazole doses in the range of 25-200 mg/L. Fill and draw operation resumed with continuous sulfamethoxazole dosing of 50 mg/L and the chronic impact was evaluated with acclimated biomass after 20 days. Acute impact revealed higher maintenance energy requirements, activity reduction and slight substrate binding. Chronic impact resulted in retardation of substrate storage. A fraction of acetate was utilized at a much lower rate with partial biodegradation of sulfamethoxazole by the acclimated biomass. Pyrosequencing indicated that Amaricoccus sp. and an unclassified Bacteroidetes sp., possibly with the ability to co-metabolize sulfamethoxazole, dominated the community.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 206, April 2016, Pages 65-76
نویسندگان
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