添加蛭石对奶牛粪厌氧干发酵的影响  

Effects of Adding Vermiculite on Anaerobic Dry Fermentation of Cow Manure

作　　者：曾静 尹芳[1] 张无敌[1] 吴凯 王昌梅[1] 柳静[1] 赵兴玲[1] 杨红[1] ZENG Jing;YIN Fang;ZHANG Wu-di;WU Kai;WANG Chang-mei;LIU Jing;ZHAO Xing-ling;YANG Hong(School of Energy and Environmental Science,Yunnan Normal University,Kunming 650500,China)

机构地区：[1]云南师范大学能源与环境科学学院,云南昆明650500

出　　处：《中国沼气》2021年第4期33-38,共6页China Biogas

基　　金：国家自然科学基金(51366015);云南省应用基础研究计划青年项目(2018FD018)。

摘　　要：为了提高奶牛粪厌氧干发酵产气效率和研究蛭石对厌氧干发酵中酸积累的影响,文章尝试添加不同量的蛭石至发酵体系中,总发酵浓度为22%,蛭石添加量分别为总发酵浓度体积的2%,5%,8%。结果表明:添加蛭石在发酵前期能有效抑制VFAs的生成,减轻酸化作用,并且还能加快启动实验和提高产甲烷效果。蛭石最适宜添加量应该控制在5%左右。该研究为蛭石作为添加剂对厌氧干发酵的相关研究提供支持。In order to improve the gas production efficiency of cow manure anaerobic dry fermentation and investigate the influence of vermiculite on acid accumulation in anaerobic dry fermentation,in this paper,different amounts of vermiculite were added into the fermentation system.The total fermentation concentration was 22%,and vermiculite added amounts were 2%,5%and 8%of volume of total fermentation concentration,respectively.The results showed that the addition of vermiculite could effectively inhibit the formation of VFAs,reduce the acidification in the early fermentation stage,and so speed up the initiation of experiments and improve the efficiency of methane production.The optimum amount of vermiculite addition should be controlled at about 5%.

关 键 词：厌氧干发酵 奶牛粪 蛭石 

分 类 号：S216.4[农业科学—农业机械化工程] X713[农业科学—农业工程]