کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7074180 1459947 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Improved anaerobic digestion performance and biogas production from poultry litter after lowering its nitrogen content
ترجمه فارسی عنوان
بهبود عملکرد هضم بی هوازی و تولید بیوگاز از بستر مرغ بعد از کاهش محتوای نیتروژن آن
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
چکیده انگلیسی
Poultry litter (PL) was pre-treated in order to reduce its nitrogen content and to increase the C/N ratio. The pre-treatment consisted of a first anaerobiosis phase of about 60 days in order to accumulate ammonia nitrogen, followed by an ammonia stripping phase by heating the substrate at 80 °C for 24 h. The digestion was performed with PL and pre-treated PL (TPL) after ammonia stripping as mono-substrate under four total solids loads, i.e. 5%, 10%, 15% and 20%. The TPL after ammonia stripping displayed lower ammonia (62-73%) and VFA (41-65%) concentrations compared to digesters with raw PL, while bio-methane yield increased about 8-124%. Bio-methane yields in the series with TPL after ammonia stripping were about 193, 196, 215 and 147 LCH4/kgCOD, based on the COD added, for 5%, 10%, 15% and 20% TS load, respectively. The results indicate that lowering nitrogen content using the suggested process improves bio-methane yields significantly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 196, November 2015, Pages 726-730
نویسندگان
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