کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
4996698 1368272 2018 6 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله
Long solid retention time (SRT) has minor role in promoting methane production in a 65 °C single-stage anaerobic sludge digester
ترجمه فارسی عنوان
زمان نگهداری طولانی مدت جامد (SRT) نقش مهمی در ترویج تولید متان در یک واکنش لجن بی هوازی تک مرحله ای 65 درجه ºC دارد
کلمات کلیدی
تولید متان؛ زمان نگهداری جامد؛ دمای حرارتی (65 Â ° C)؛ هضم یک مرحله ای؛
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی


- Effects of SRT on methane production were studied in a 65 °C AD reactor.
- The optimum SRT was 6 days with methane yield of 186.16 mL/g VS.
- Long SRT enhanced the recalcitrant compounds release and worsen the methane yield.
- The main pathway for methane production was through syntrophic acetate oxidation.

In this study, a thermophilic (65 °C) single-stage wasted activated sludge (WAS) digester was established and the effects of solid retention time (SRT) on the reactor performance were investigated. The result showed that the optimum SRT was 6 days with methane yield of 186.16 mL/g VS. It was found that SRT had little effect on the hydrolysis and volatile solids (VS) destruction, and the high temperature employed seemed sufficient to achieve maximum hydrolysis and VS destruction performance. Longer SRT, however, promoted the release of recalcitrant compounds and impaired acidification, leading to the low methane yield. The microbial community analysis revealed that the dominant pathway for methane production was through syntrophic activity of acetate oxidizing bacteria and hydrogenotrophic methanogens while acetoclastic methanogens were absent in the system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 247, January 2018, Pages 724-729
نویسندگان
, , , , , ,