| The biogas production efficiency of crop straws at different temperature |
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| DOI：10.7606/j.issn.1000-7601.2008.02.37 |
| Key Words: straw anaerobic fermentation biogas production efficiency fermentation period |
| Author Name | Affiliation | | CHU Lili | College of Resources and Environment Northwest A＆F University,Yangling, Shaanxi 712100, China；Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province,Yangling, Shaanxi 712100,China | | YANG Gaihe | College of Agronomy Northwest A＆F University, Yangling, Shaanxi 712100, China；Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province,Yangling, Shaanxi 712100,China | | ZHANG Cuili | College of Resources and Environment Northwest A＆F University,Yangling, Shaanxi 712100, China；Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province,Yangling, Shaanxi 712100,China | | REN Guangxin | College of Agronomy Northwest A＆F University, Yangling, Shaanxi 712100, China；Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province,Yangling, Shaanxi 712100,China | | FENG Yongzhong | College of Agronomy Northwest A＆F University, Yangling, Shaanxi 712100, China；Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province,Yangling, Shaanxi 712100,China |
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| Abstract: |
| The research adapted controllable constant-temperature fermented equipment designed by ourselves,and selected wheat straw,rice straw and corn straw for fermented materials,chose 5℃ as a step-length and did the study of biogas fermentation at the temperature of 10℃,15℃,20℃,25℃,30℃,35℃ and 40℃.The results showed that 3 kinds of raw materials can all produce biogas normally at 7 temperature grades,the biogas production efficiency increased as the temperature increased.The biogas production efficiency was the best at 40℃(the max value of wheat straw biogas production was 2 520.0 mL,the rate of TS was 187.1 mL/g;the max value of rice straw biogas production was 21 000.0 mL,the rate of TS was 195.0 mL/g;the max value of corn straw biogas production was 2 395.0 mL,the rate of TS was 228.5 mL/g;),while the biogas production efficiency was the worst at 10℃(the max value of wheat straw biogas production was 377.5 mL,the rate of TS was 20.1 mL/g;the max value of rice straw biogas production was 305.0 mL,the rate of TS was 17.2 mL/g;the max value of corn straw biogas production was 252.5 mL,the rate of TS was 15.0 mL/g;) |
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