添加蚓粪对玉米秸秆厌氧发酵产气特性的影响  

Effect of Addition of Vermicompost on Biogas Production of Corn Stalk Through Anaerobic Fermentation

作　　者：邹星星[1] 郑正[1] 陈广银[1] 罗艳[1] 

机构地区：[1]南京大学环境学院污染控制与资源化研究国家重点实验室,江苏南京210093

出　　处：《生态与农村环境学报》2010年第2期174-177,共4页Journal of Ecology and Rural Environment

基　　金：江苏省科技项目(BS2007148);南京市科技计划项目(200801072)

摘　　要：以玉米秸秆为原料,总固体(TS)含量为50g.kg-1,采用中温35℃批式发酵,考察了添加蚓粪对玉米秸秆厌氧发酵产气的影响。结果表明:玉米秸秆单独发酵时,单位TS产气量为333.3mL.g-1,甲烷产量为202.0mL.g-1,并在反应初期出现酸化现象;蚓粪与玉米秸秆TS质量比为1:1进行发酵时,单位TS产气量为400.0mL.g-1,甲烷产量为269.6mL.g-1,相对于玉米秸秆单独厌氧发酵分别提高了20.0%和35.5%,且反应过程中未出现酸化现象。说明蚓粪适合作为玉米秸秆厌氧发酵产气的添加剂。Effect of addition of vermicompost on anaerobic digestion of corn stalk in biogas production was investigated with total solid （TS） concentration 50 g · kg^-1 and fermentation temperature 35 ℃. It was found that when corn stalk was in the digestor alone, the cunmlative biogas yield per gram TS was 333.3 mL · g^-1 and the cumulative methane yield per gram TS was 202.0 mL · g^-1, but when vermicompost was added （ 1 ： I in TS mass ratio）, their outputs were increased by 20. 0% and 35.5%, reaching 400. 0 and 269.6 mL · g^-1, respectively. Moreover, the phenomenon of acidification disappeared during the process of fermentation. All these demonstrate that vermicompost is a suitable amendment in anaerobic digestion of corn stalk for biogas production.

关 键 词：玉米秸秆 蚓粪 添加剂 厌氧发酵 

分 类 号：X705[环境科学与工程—环境工程]