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《Acta Energiae Solaris Sinica》 2008-06
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THE DRY ANAEROBIC DIGESTION STUDY ON RICE STRAW IN SOUTHEAST CHINA

Li Dong~(1,2) Li Lianhua~1 Ma Longlong~1 Yuan Zhenhong~1 Sun Yongming~1 (1.Guangzhou Institute of Energy Conversion Chinese Academy of Sciences,Guangzhou 510640,China;2.Graduate School of the Chinese Academy of Sciences,Beijing 100039,China)  
Dry anaerobic digestion for the pretreated rice straw was investigated under different temperature in 2.5L flask- experiment.The result showed that mesophilic digestion achieved better biogas conversion and high biogas quality.Then the dry anaerobic digestion with leachate recireulation for the pretreated rice straw were tested under ambient temperature in 1m~3 digester-experiment.The result showed that the cumulative production in early 45 days achieved 80.4% of total production after C/N adjustment and biological pretreatment.The highest methane content was 62%.The biogas yield and methane yield were 570 L/kgVS and 240 L/kgVS,respectively,the whole digestion process was normal according to pH value in leachate,production rate and percentage of methane.The tank digester-experiments show that the circulation of digestion liquid could awoid sour poisoning effectively and increase the quantity of biogas.This study could provide useful parameters for the energy utilization of rice straw in Southeast China.
【Fund】: 农业部科技教育司资助项目(20)
【CateGory Index】: S216.4
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