接种物对模拟田间厌氧发酵系统甲烷生产和秸秆降解的作用  

Effects of Inoculum on Methane Production and Straw Degradation in a Simulated Field Anaerobic Fermentation System

作　　者：秦凯 陈芳清 张行 黄永文 刘杨赟 QIN Kai;CHEN Fang-qing;ZHANG Hang;HUANG Yong-wen;LIU Yang-yun(Hubei International Scientific and Technological Cooperation Center of Ecological Conservation and Management in Three Gorges Area,China Three Gorges University,Yichang 443002,China;Hubei Zhengjiang Environmental Science&Technology Co.,Ltd,Yichang 443002,China)

机构地区：[1]湖北省三峡地区生态保护与治理国际联合研究中心,湖北宜昌443002 [2]湖北正江环保科技有限公司,湖北宜昌443002

出　　处：《环境科技》2020年第4期1-5,48,共6页Environmental Science and Technology

基　　金：湖北省科技创新专项重点项目(2016AHB014).

摘　　要：模拟田间厌氧发酵产生物甲烷的条件,探讨不同接种物对水稻秸秆田间厌氧发酵产生物甲烷的作用。结果表明:接种物种类会显著影响厌氧发酵产气进程、累积产气量、原料总固体(TS)产气率以及秸秆降解。各处理产甲烷峰值出现的时间及大小在不同处理间均有差异,以添加沼液影响最显著,产甲烷峰值较对照提高了192.75%,停滞期缩短了10 d;添加沼液处理的累积产气量和TS产气率最高;添加沼液对秸秆降解的效果最好,总降解率、纤维素降解率和半纤维素降解率分别达到了54.71%,42.20%和42.70%。上述结果表明不同接种物能够显著影响水稻秸秆厌氧发酵产甲烷效率和秸秆降解,以沼液的试验效果最好。The effects of different inoculums on the production of biomethane by anaerobic fermentation of rice straw in the field were studied by simulating the conditions of field anaerobic fermentation.The results showed that inoculum species significantly affected the process of anaerobic fermentation,cumulative gas production,TS gas production rate and straw degradation.The time and size of the peak methane production of each treatment were different among different treatments,and the effect of adding biogas slurry was the most significant.The peak methane production increased by 192.75%compared with the control,and the standstill period shortened by 10 days;The cumulative gas production rate and TS gas production rate were the highest when biogas slurry was added;The effect of biogas slurry on straw degradation was the best,the total degradation rate,cellulose degradation rate and hemicellulose degradation rate were 54.71%,42.20%and 42.70%respectively.The above results showed that different inoculants could significantly affect the methane production efficiency and straw degradation of rice straw anaerobic fermentation,and biogas slurry was the best.

关 键 词：厌氧发酵 接种物 降解 水稻秸秆 生物甲烷 

分 类 号：X5[环境科学与工程—环境工程]