木聚糖酶对牛粪厌氧干发酵产沼气的影响  

Effect of Xylanase on the Biogas Production by Anaerobic Dry Fermentation of Cow Manure

作　　者：张陈 CAMARA ZOUMANA 苏有勇[1] ZHANG Chen;CAMARA ZOUMANA;SU You-yong(Faculty of Agriculture and Food,Kunming University of Science and Technology,Kunming,Yunnan 650504)

机构地区：[1]昆明理工大学农业与食品学院,云南昆明650504

出　　处：《安徽农业科学》2021年第20期217-219,共3页Journal of Anhui Agricultural Sciences

基　　金：国家自然科学基金项目(51466004)。

摘　　要：为了提升牛粪产沼气性能,通过批式厌氧干发酵的方式考察木聚糖酶对牛粪产沼气的影响。在发酵温度55℃,总固体物(TS)浓度为40%,接种物含量30%,添加原料质量1%的木聚糖酶来进行牛粪厌氧干发酵。结果表明,木聚糖酶的添加不能缩短产沼气周期,但能提升沼气产量。试验组累计产气量为9.9 L,比对照组提升了22%,原料产气率为0.25 L/g,池容产气率为0.73 m^(3)/(m^(3)·d)。产气过程与一般原料产气过程类似,但发酵周期较长。该试验结果为牛粪的高效利用提供了一个有效途径。In order to improve the biogas production performance of cow manure, the effects of xylanase on the biogas production of cow manure were investigated by batch anaerobic dry fermentation.Under the conditions of the fermentation temperature 55 ℃,total solids(TS) concentration 40%,inoculant content 30%,1% of xylanase was added to make anaerobic dry fermentation of cow manure.The results showed that the addition of xylanase could not shorten the biogas cycle, but it could improve the biogas production.The cumulative biogas production of the experimental group was 9.9 L,which increased by 22% than that of the control group.The biogas yield of raw materials was 0.25 L/g, and volumetric biogas yield was 0.73 m^(3)/(m^(3)· d).The biogas production process was similar to that of general raw materials, but the fermentation cycle was longer.This experiment results provided an effective way for the efficient use of cow manure.

关 键 词：牛粪 木聚糖酶 干发酵 产气率 

分 类 号：S216.4[农业科学—农业机械化工程]