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Position: Home > Articles > Studies on patterns of material metabolism and methane formation by the primary microbial population in the process of biogas fermentation with pig dung and rice straw as raw material China Biogas 1989 (02) 14-18

稻草猪粪沼气发酵过程中主要微生物类群的物质代谢及甲烷形成研究

作  者:
余敦寿;项昌金;张世炜;周新兰;张桂香;徐洛俭
摘  要:
对以稻草和猪粪为原料的沼气发酵过程中主要微生物的消长和有关生理代谢规律进行了研究。氨化菌和硝酸盐还原菌在12天内菌数上升。随着厌氧环境加强,纤维分解菌和产甲烷菌的前体物质不断增加,两菌繁殖加速,而氨化菌和硝酸盐还原菌逐渐减少,到第24天减少到最低值。此时纤维分解菌和产甲烷菌群的菌数上升到最大值,即由10~3个/毫升上升到10~7个/毫升。通过对乙酸、丙酸、乙酸脱氢酶活力、辅酶F_(420)、生物量、产气量及甲烷含量的测定,发现各类群菌量的增减、产气量和产气率及甲烷含量的变化与乙酸、丙酸的利用和乙酸脱氢酶活力的变化具有明显相关性;辅酶F_(420)含量与产甲烷菌数的增长、甲烷含量及产气率成正相关。
译  名:
Studies on patterns of material metabolism and methane formation by the primary microbial population in the process of biogas fermentation with pig dung and rice straw as raw material
作  者:
Yu Dunshou Xiang Changjin, Zhang Shiwei (Research centre of Biotechology Wuhan university)
摘  要:
Patterns of growth and physiologic metabolism by the primary microbial population in the process of biogas fermentation with pig dung and rice straw were studied. Through determining acetic acid, the activity of dehydrogenase, the activity of F420, synthesis DNA, gas production and methane content, it was found that gas production, the rate of gas yield and methane content had a close relation with growth and decline of primary microbial population, acetic acid—utilizing and the activity of dehydrogenase. Results of tests confirmed thet F420 concentration reflected the increasing number of methanogenic bacteria and methane content.

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