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温度降低对产甲烷效能的影响

Effect of lower temperature on methane production
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摘要 鉴于温度对产甲烷过程稳定运行的重要性,采用间歇培养方式研究了产甲烷过程受温度降低的影响,以及初始碳源对温度降低后产甲烷效能的影响.结果表明,产甲烷菌在25℃条件下,产甲烷效能有不同程度的下降,累计产甲烷量降低了25.2%,比产甲烷速率降低了21.1%,底物利用率都降低了15%左右.产甲烷菌在初始甲酸钠体积分数5%~40%、乙酸钠浓度0.5~4.0 mol/L和甲醇体积分数35%~70%时都可以产甲烷,其累计产甲烷量随着底物含量的增大而先增大后减小.在甲酸钠体积分数30%和乙酸钠浓度3 mol/L时,累计产甲烷量达到最大,分别为2.75、2.84 L/L,累计产甲烷量分别提高了12.2%和15.9%.不同体积分数甲醇对其产甲烷量提高效果不明显,产甲烷效能与原来持平. This paper studied the effect of lower temperature and initial substrate concentra- tions on methane production by methanogens at 25 ℃ and sodium concentrations 5% - 40%, sodium acetate concentrations 0.5 -4.0 mol/L, methanol concentration was 35% 70%. The cumulative methane volume decreased 25.2% , specific methane production rate decreased 21.1%, substrate utilization rate lower about 15%. The cumulative hydrogen vol- ume and biomass increased and then decreased with increasing initial substrate concentra- tions. At sodium concentrations 30% and sodium acetate concentrations 3 mol/L, the cumulative methane production reached the maximum value of 2.75 L/L and 2.84 L/L, decreased 12.2% and 15.9% respectively. The effect of different concentrations of methanol ruas not obvious.
出处 《哈尔滨商业大学学报(自然科学版)》 CAS 2012年第2期175-178,182,共5页 Journal of Harbin University of Commerce:Natural Sciences Edition
基金 国家高技术研究发展计划(863计划)资助项目(2009AA064702)
关键词 温度降低 甲酸钠体积分数 乙酸钠浓度 累计产甲烷量 temperature decreasing sodium concentration sodium acetate concentration cumulative methane volume
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  • 1杏艳,赵金安,樊耀亭,侯红卫,刘宝敏.含纤维素类生物质的生物制氢[J].太阳能学报,2006,27(7):656-660. 被引量:15
  • 2段晓男,王效科,陈琳,牟玉静,欧阳志云.乌梁素海湖泊湿地植物区甲烷排放规律[J].环境科学,2007,28(3):455-459. 被引量:32
  • 3Bauchop T, 1967. Inhibition of rumen methanogenesis by methane analogues. Journal of Bacteriology, 94(1): 171- 175. 被引量:1
  • 4Cole N A, McCroskey J E, 1975. Effects of hemiacetal of chloral and starch on the performance of beef steers. Journal of Animal Science, 41(6): 1735-1742. 被引量:1
  • 5Czerkawski J W, Breckenridge G, 2007. Fermentation of various glycolytic intermediates and other compounds by rumen micro-organisms, with particular reference to methane production. British Journal of Nutrition, 27(1): 131-146. 被引量:1
  • 6De Bont J A, Mulder E G, 1976. Invalidity of the acetylene reduction assay in alkane-utilizing, nitrogen-fixing bacteria. Applied and Environmental Microbiology, 31(5): 6404547. 被引量:1
  • 7DiMarco A A, Bobik T A, Wolfe R S, 1990. Unusual coenzymes of methanogenesis. Annual Review of Biochemistry, 59(1): 355-394. 被引量:1
  • 8Ermler U, Grabarse W, Shima S, Goubeaud M, Thauer R K, 1997. Crystal structure of methyl-coenzyme M reductase: The key enzyme of biological methane formation. Science, 278(5342): 1457-1462. 被引量:1
  • 9Fathepure B, Boyd S, 1988. Dependence of tetrachloroethylene dechlorination on methanogenic substrate consumption by Methanosarcina sp. strain DCM. Applied and Environmental Microbiology, 54(12): 2976-2980. 被引量:1
  • 10Ferry J G, 1997. Methane: Small molecule, big impact. Science, 278(5342): 1413-1414. 被引量:1

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