酸化温度对玉米秸秆厌氧水解酸化性能的影响  

Effect of acidification temperature on anaerobic hydrolysis and acidogenesis of corn straw

作　　者：童欢 Akiber Chufo Wachemo 袁海荣[1] 李秀金[1] Tong Huan;Akiber Chufo Wachemo;Yuan HaiRong;Li Xiujin(College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Department of Water Supply and Environmental Engineering,Arba Minch University,Arba Minch 4400,Ethiopia)

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]阿尔巴门奇大学供水与环境工程系,格穆戈法州阿尔巴明奇4400

出　　处：《可再生能源》2020年第8期995-1000,共6页Renewable Energy Resources

基　　金：国家“十三五”重点研发计划项目(2016YFD0501402)。

摘　　要：文章研究了不同酸化温度(35,40,45℃)对玉米秸秆厌氧水解酸化性能的影响。研究结果表明:酸化温度对玉米秸秆水解酸化的程度以及产酸代谢类型有显著影响;当酸化温度为40℃时,玉米秸秆水解酸化产生的可溶性化学需氧量(SCOD)和挥发性脂肪酸(VFAs)的浓度最高,产生的气体以H2和CO2为主;酸化相的pH值为5.14~5.51,VFAs中乙酸和丁酸含量之和占VFAs总量的85.2%~91.4%,此时酸化相进行的是有利于甲烷化的丁酸型发酵.The influence of acidification temperature(35,40,45℃)on characteristics of anaerobic hydrolysis and acidogenesis of corn straw was studied in this work.The results showed that acidification temperature affects the process and the production of hydrolysis and acidogenesis of corn straw.At 40℃the acidification phase had the highest solluted chemical oxigen demand(SCOD)and volatile fatty acids(VFAs)concentration,and the biogas produced was mainly H2 and CO2,the pH value was 5.14~5.51.The acetic acid and butyric acid accounted for 85.2%~91.4%of the total VFAs.The butyric acid fermentation was carried out in acidification phase which was conducive to methanation.

关 键 词：玉米秸秆 水解 酸化 温度 挥发性脂肪酸 

分 类 号：TK6[动力工程及工程热物理—生物能] S216.2[农业科学—农业机械化工程]