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《Journal of Agro-Environment Science》 2012-02
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Study on Effect of Illumination Intensity on Pig Manure, Cow Dung′ Anaerobic Fermentation

YIN Dong-xue1,3, LIU Juan-juan2,3, JI Yan-min1,3, LIU Wei1, YANG Gai-he2,3, REN Guang-xin2,3, FENG Yong-zhong2,3, ZHOU Xiao-wu4(1.College of Forestry,Northwest Agriculture and Forestry University,Yangling 712100,China; 2.College of Agronomy,Northwest Agriculture and Forestry University,Yangling 712100,China; 3.Research Center of Recycle Agricultural Engineering and Technology of Shannxi Province,Yangling 712100,China; 4.Logistics Servics of College of Agronomy,Northwest Agriculture and Forestry University,Yangling 712100,China)  
The purpose of research on effect of illumination intensity on pig manure and cow dung′ anaerobic fermentation is to provide theoretical basis for improving biogas yield and promoting innovation of biogas digester. The experiment, under 35 ℃, at 8% of total solid concentration of digestion material, with pig manure and cow dung as digestion material, was completed at different illumination intensity which rang was from 0 to 24 hours and with a gradient of 6 hours. Results indicated that there was a great deal difference in terms of the same fermentation materials′ gas production under the different illumination intensity. Pig manure and cow dung′ cumulative biogas yield, under 12 hours of light condition, were 1.80 and 2.34 times respectively as much as that of under dark condition. In addition, gas production of different fermentation material, at the same illumination intensity, was different. In the dark conditions, the cumulative gas production of pig manure was 8 136 mL, which was far much than that of cow dung, at 3 282.5 mL. Illumination conditions changed the physical and chemical characteristics of fermentation material, which led to the dynamic of relationship among cumulative biogas yield and total alkalinity, volatile fatty acids, pH, NH3-N.
【Fund】: 陕西13115重大专项(2010ZDKG-06);; 农业部农村能源综合建设项目专项(2011-65);; 十二五国家科技支撑计划项目“混合原料高产生物燃气技术集成示范”(2011BAD15B03)
【CateGory Index】: S216.4
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