کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7480422 | 1485235 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of temperature on continuous dry fermentation of swine manure
ترجمه فارسی عنوان
تاثیر دما بر فرآیند خشک شدن پیوسته کود گوسفند
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کلمات کلیدی
کود خوک، هضم خشک درجه حرارت، تولید بیوگاز،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
چکیده انگلیسی
Laboratory-scale experiments were performed on the dry digestion of solid swine manure in a semi-continuous mode using 4.5 L down plug-flow anaerobic reactors with an organic loading rate of 3.46 kg volatile solids (VS) mâ3 dâ1 to evaluate the effects of temperature (15, 25 and 35 °C). At 15 °C, biogas production was the poorest due to organic overload and acidification, with a methane yield of 0.036 L CH4 gâ1 VS added and a volumetric methane production rate of 0.125 L CH4 Lâ1 dâ1. The methane yield and volumetric methane production rate at 25 °C (0.226 L CH4 gâ1 VS added and 0.783 L CH4 Lâ1 dâ1, respectively) were 6.24 times higher than those at 15 °C. However, the methane yield (0.237 L CH4 gâ1 VS added) and the volumetric methane production rate (0.821 L CH4 Lâ1 dâ1) at 35 °C were only 4.86% higher than those at 25 °C, which indicated similar results were obtained at 25 °C and 35 °C. The lower biogas production at 35 °C in dry digestion compared with that in wet digestion could be attributed to ammonia inhibition. For a single pig farm, digestion of solid manure is accomplished in small-scale domestic or small-farm bioreactors, for which operating temperatures of 35 °C are sometimes difficult to achieve. Considering biogas production, ammonia inhibition and net energy recovery, an optimum temperature for dry digestion of solid swine manure is 25 °C.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Environmental Management - Volume 177, 15 July 2016, Pages 247-252
Journal: Journal of Environmental Management - Volume 177, 15 July 2016, Pages 247-252
نویسندگان
Liangwei Deng, Chuang Chen, Dan Zheng, Hongnan Yang, Yi Liu, Ziai Chen,