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活性炭在中高温条件下对玉米秸秆厌氧发酵的影响
Authors
刘勇迪
吴夏芫
+6 more
周俊
甘荣
葛明民
贾红华
闫志英
雍晓雨
Publication date
1 January 2017
Publisher
Abstract
为提高玉米秸秆厌氧发酵的产气效果,本文研究活性炭在中温(38℃)和高温(50℃)条件下对玉米秸秆厌氧发酵产甲烷的效果及微生物学机制.结果表明,添加活性炭能显著促进秸秆厌氧发酵产甲烷,中、高温试验组(添加活性炭)的累积产甲烷量分别比对照提高了63%和96%;DGGE的结果显示,高温试验组(添加活性炭)和对照组(未添加活性炭)的发酵液中的优势细菌菌群分别是Clostridiale bacterium和Bacillus,中温对照组发酵液和中温试验组发酵液未发现明显优势菌种.添加活性炭分别有利于氢营养型的甲烷鬃毛菌(Methanosaeta concilii strain)和乙酸营养型的醋酸甲烷八叠球菌(Methanosarcina acetivorans strain),在中温、高温试验组的发酵液中形成优势古菌菌群.中温试验组活性炭载体上的优势古菌菌群为甲烷鬃毛菌(Methanosaeta concilii strain),而高温试验组活性炭载体上的优势古菌菌群主要为甲烷八叠球菌嗜高温菌属(Methanosarcina thermophila strain)
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Last time updated on 29/08/2018