核桃壳生物炭对厌氧干发酵的影响  

Effect of Walnut Shell Biochar on Dry Anaerobic Fermentation

作　　者：张振[1] 杨红[1] 尹芳[1] 张无敌[1] 赵兴玲[1] 王昌梅[1] 吴凯 柳静[1] ZHANG Zhen;YANG Hong;YIN Fang;ZHANG Wudi;ZHAO Xingling;WANG Changmei;WU Kai;LIU Jing(College of Energy and Environmental Sciences,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：《云南农业大学学报（自然科学版）》2020年第5期885-891,共7页Journal of Yunnan Agricultural University:Natural Science

基　　金：国家自然科学基金项目(51366015);西南地区可再生能源研究与开发协同创新中心(05300205020516009);云南省应用基础研究计划青年项目(2018FD018)。

摘　　要：【目的】提高奶牛粪厌氧干发酵产气效率和探究生物炭对其影响效果。【方法】将核桃壳在300、400、500和600℃下烧制成生物炭,将生物炭加入干发酵体系中,添加量为总固体(total solid,TS)质量的4%,发酵罐中总干物质质量占总发酵质量的25%,接种量为发酵反应物质总质量的30%,于中温(37±1)℃下进行发酵试验并对生物炭及发酵料液进行电镜扫描。【结果】600H组起到了良好的促进效果,其发酵VS产甲烷量达(183.46±2.93)mL/g,比对照组高30.52%;电镜扫描发现:500H组、600H组和CK组的微生物菌群呈聚集现象。【结论】相对低温条件下制备的生物炭不利于干发酵,500H组和600H组生物炭有利于干发酵。本研究为干发酵中加入生物炭的相关研究提供了支持。[Purpose]To improve the gas production efficiency of dry anaerobic fermentation of cow manure and explore the effect of biochar on it.[Methods]The biochar made from walnut shell under different temperature gradients was added into the dry fermentation system.The amount of biochar was 4%of the total solid(TS),the amount of total dry matter in fermentation tank accounts for 25%of total fermentation quality,and the inoculation rate was 30%of the total fermentation weight.The fermentation experiment was carried out under the medium temperature(37±1)℃,and the biochar and fermentation broth were scanned by electron microscope.[Results]600H group played a good role in promoting VS methane production,which was(183.46±2.93)mL/g,30.52%higher than that of the control group.Election microscope showed that microbial community aggregated in 500H group,600H group and control qroup.[Conclusion]The biochar prepared at relatively low temperature is not conducive to dry fermentation,and the biochar of 500H group and 600H group is conducive to dry fermentation.This study provides support for the research of adding biochar in dry fermentation.

关 键 词：干发酵 奶牛粪 生物炭 

分 类 号：S664.1[农业科学—果树学] TS216.4[农业科学—园艺学]