کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
681486 1460030 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of C/N ratio and ammonia-N accumulation in a pilot-scale thermophilic dry anaerobic digester
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Effect of C/N ratio and ammonia-N accumulation in a pilot-scale thermophilic dry anaerobic digester
چکیده انگلیسی

The effect of ammonia-N accumulation in a dry anaerobic digestion was studied effectively using pilot-scale thermophilic reactor. Two simulations were prepared to attain C/N ratio 27 and C/N ratio 32 using bio-degradable feedstocks such as food waste, fruit and vegetable waste, green waste and paper waste. Organic loading rates and digestate recirculation rates were varied during different time intervals and the performance was evaluated using parameters like pH, VFA, Alkalinity, ammonia-N and biogas yield. Results showed that the simulation with C/N ratio 32 had about 30% less ammonia in digestate as compared to that with C/N ratio 27. The system performed well up to organic loading rate (OLR) 7–10 kgVS/m3 d and retention time up to 19 days, with surplus energy production of 50–73%. Moreover, a free ammonia accumulation/inhibition effect was documented and methods to overcome the adverse effects were discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 113, June 2012, Pages 294–302
نویسندگان
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