کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
679643 | 1459953 | 2015 | 37 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of several antibiotics and 2-bromoethanesulfonate on the volatile fatty acid degradation, methanogenesis and community structure during thermophilic anaerobic digestion
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The main aim of the present study was to gain insight into the stability of an anaerobic digestion process suffering from exposure to antibiotics and the methanogenic inhibitor 2-bromoethanesulfonate (BES). For this purpose, eleven antibiotics and BES were investigated with regard to the degradation of volatile fatty acids (VFAs), methanogenesis, and impact on the microbial community structure. Only neomycin, gentamicin, rifampicin, and BES showed complete inhibitions of VFA degradations. This points to distinct interferences with important trophic degradation cascades. Based upon DGGE and sequencing approaches, Methanosarcina spp. were severely influenced by the treatments while hydrogenotrophic methanogens were less affected. Interestingly, BES and neomycin inhibited the degradation of acetate while only BES inhibited methanogenesis completely. It seems that Methanosarcina spp. were mandatory for the degradation of acetate at high rates. The present results highly emphasize the detrimental effects of antimicrobial compounds with the potential to significantly inhibit the anaerobic digestion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 190, August 2015, Pages 148-158
Journal: Bioresource Technology - Volume 190, August 2015, Pages 148-158
نویسندگان
Philipp Lins, Christoph Reitschuler, Paul Illmer,