霉处理pH值对小麦秸秆沼气发酵产气特性的影响  

EFFECTS OF FUNGI PRETREATMENT pH ON CHARACTERISTICS OF ANAEROBIC DIGESTION OF WHEAT STRAW FOR BIOGAS PRODUCTION

作　　者：吴晋锴[1] 孙辰[1] 刘荣厚[1] 

机构地区：[1]上海交通大学农业与生物学院生物质能工程研究中心,上海200240

出　　处：《太阳能学报》2013年第11期1964-1968,共5页Acta Energiae Solaris Sinica

基　　金：上海市重大科技攻关项目(08DZ1900405)

摘　　要：以小麦秸秆为原料，对其进行氨霉联合处理，在实验室自行设计的小型沼气发酵装置上进行厌氧发酵试验，研究氨霉联合处理中霉处理pH值（pH：3—7）对小麦秸秆沼气发酵产气特性的影响。结果表明，当黄孢原毛平革菌和里氏木霉的添加比例为1×10^8：1×10^8，霉预处理pH：4时，总产气量最大，为9123mL。在发酵第9天时，霉预处理pH=4的试验组日产气量最大，为980mL。厌氧发酵过程中的pH值和挥发性脂肪酸含量均在正常范围内。气体中cH。最高含量为54．64％，较空白试验组提高3．62％，发酵时间缩短为22d。Co-pretreatment of wheat straw by urea-fungi was carried out. The effects of fungi pretreatment pH of wheat straw on anaerobic digestion for biogas production were investigated using a self-made anaerobic digestion device with pretreated wheat straw as raw materials. Results showed that the total yield of biogas reached the maximum of 9123mL when the ratio of Phanerochaete chrysosporium to Trichoderma reesei added into the straw and fungi pretreatment pH were 1 x l0s ： 1 x 10s and 4, respectively. The maximum daily biogas production was 980mL when the fungi pretreatment pH of wheat straw was 4 at ninth day of anaerobic digestion. The values of VFA and pH were in normal range. The maximum control. Besides, the fermentation time CH4 content was 54.64% which was 3.62% higher than that of was shorten to 22d during the whole experiment.

关 键 词：小麦秸秆 氨霉联合处理 厌氧发酵 沼气 

分 类 号：TK6[动力工程及工程热物理—生物能] S21[农业科学—农业机械化工程]