کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10395302 888977 2011 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Physical-anaerobic-chemical process for treatment of dairy cattle manure
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Physical-anaerobic-chemical process for treatment of dairy cattle manure
چکیده انگلیسی
An overall treatment process for the removal of nitrogen, methane production and obtention of valuable fertilizers from dairy manure has been investigated in laboratory scale. Solid and liquid fractions were separated by flocculation and screening. The solid fraction contained 81.6%, 84.4%, 58.6% and 85.2% of TS, VS, TKN-N and PT originally present in manure. Batch anaerobic digestion of this solid fraction at 50 °C resulted in methane production of 29.0 L CH4/kg. The liquid fraction, free of suspended solids, was satisfactorily treated at 35 °C in an upflow anaerobic sludge blanket reactor operating stably at an organic loading rate of 40.8 g COD/(L·d) reaching a methane production of 10.3 L CH4/(L·d). Accumulation of volatile fatty acids did not occur. Ammonia nitrogen concentration in the anaerobic effluent fluctuated between 850-1170 mg NH4+-N/L and was reduced to values less than 100 mg NH4+-N/L by struvite precipitation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 102, Issue 3, February 2011, Pages 2143-2150
نویسندگان
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