کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7077955 1459981 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of solids retention time on the bioavailability of organic carbon in anaerobically digested swine waste
ترجمه فارسی عنوان
تأثیر زمان نگهداری جامدات بر قابلیت زیست پذیری کربن آلاینده در دفع زباله های قابل هضم بی هوازی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Anaerobic digestion (AD) can be used to stabilize and produce energy from livestock waste; however, digester effluents may require further treatment to remove nitrogen. This paper quantifies the effects of varying solids retention time (SRT) methane yield, volatile solids (VS) reduction and organic carbon bioavailability for denitrification during swine waste AD. Four bench-scale anaerobic digesters, with SRTs of 14, 21, 28 and 42 days, operated with swine waste feed. Effluent organic carbon bioavailability was measured using anoxic microcosms and respirometry. Excellent performance was observed for all four digesters, with >60% VS removal and CH4 yields between 0.1 and 0.3 (m3 CH4)/(kg VS added). Organic carbon in the centrate as an internal organic carbon source for denitrification supported maximum specific denitrification rates between 47 and 56 (mg NO3−-N)/(g VSS h). The digester with the 21-day SRT had the highest CH4 yield and maximum specific denitrification rates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 162, June 2014, Pages 14-20
نویسندگان
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