2种原料中温发酵产气特性和有机质的变化研究  

Study on gas production characteristics and organic matter changes of two kinds of raw materials by medium temperature fermentation

作　　者：魏丹丹 王昌梅[1,2,3] 刘健峰 赵兴玲[1,2,3] 吴凯 梁承月[1,2] 杨斌 尹芳 张无敌 WEI Dandan;WANG Changmei;LIU Jianfeng;ZHAO Xingling;WU Kai;LIANG Chengyue;YANG Bin;YIN Fang;ZHANG Wudi(College of Energy and Environment Science,Yunnan Normal University,Kunming 650500,China;Yunnan Biogas Engineering Technology Research Center,Kunming 650500,China;Jilin Dongsheng Biomass Energy Engineering Research Center,Tonghua 134118,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 [2]云南省沼气工程技术研究中心,云南昆明650500 [3]吉林东晟生物质能工程研究院,吉林通化134118

出　　处：《安徽大学学报（自然科学版）》2022年第4期85-93,共9页Journal of Anhui University(Natural Science Edition)

基　　金：云南省万人计划产业技术领军人才项目(20191096);吉林省科技发展计划项目(20200402099NC,20200403010SF);沼气工程与资源化利用劳模创新工作室、云南省国际科技合作专项(202003AF140001);昆明市国际科技合作基地和云南省农村能源工程重点实验室联合资助项目。

摘　　要：玉米芯和糠醛渣均可作为沼气发酵的原料,二者的原料产气率分别为613,412 mL·g^(-1);TS产气率分别为681,457 mL·g^(-1);VS产气率分别为695,571 mL·g^(-1).两种原料发酵前后的有机质含量均发生变化,其中玉米芯中纤维素和糠醛渣中的木质素降解率最高,分别为93.79%,87.19%,降解率最低的为粗蛋白,糠醛渣的粗蛋白降解率只有2%;发酵前后料液中的总糖、还原糖和淀粉含量的变化均高于发酵前,而低聚糖含量的变化均低于发酵前;将累积产气量曲线运用一级动力学Modified Gomepertz方程进行拟合,分析2种原料消化周期中的产沼气规律.该试验结果为玉米芯和糠醛渣厌氧消化的工程应用和生物能源化开发提供研究理论和技术支撑.Corncob and furfural residue can be used as raw materials for biogas fermentation.The gas production rates of corncob and furfural residue were 613,412 mL·g^(-1),respectively.The gas production rates of TS were 681 mL·g^(-1)and 457 mL·g^(-1),respectively.VS gas production rates were 695 mL·g^(-1)and 571 mL·g^(-1).The organic matter content of the two raw materials changed before and after fermentation,in which the lignin degradation rates of cellulose and furfural residue in corncob were the highest,93.79%and 87.19%,respectively,and the crude protein degradation rate was the lowest.The crude protein degradation rate of furfural residue was only 2%.The changes of total sugar,reducing sugar and starch content in feed before and after fermentation were higher than those before fermentation,while the changes of oligosaccharide content were lower than those before fermentation.The cumulative gas production curve was fitted by first-order kinetic Modified Gomepertz equation,and the law of biogas production in the digestion cycle of two kinds of raw materials was analyzed.The experimental results may provide theoretical and technical support for the engineering application and bioenergy development of anaerobic digestion of corncob and furfural residue.

关 键 词：玉米芯 糠醛渣 木质纤维素 糖类 动力学 厌氧消化 产气潜力 

分 类 号：S216.4[农业科学—农业机械化工程]