牛粪与水稻秸秆混合厌氧发酵工艺优化及动力学研究  

Research on optimization and kinetics in anaerobic fermentation of mixed cattle manure and rice straw

作　　者：聂冬[1] 金明姬[2] 刘永[3] 严昌国[2] 

机构地区：[1]延边大学理学院,吉林延吉133002 [2]延边大学农学院,吉林延吉133002 [3]山东宝来利来生物工程股份有限公司研究院,山东泰安271000

出　　处：《浙江农业学报》2016年第8期1421-1427,共7页Acta Agriculturae Zhejiangensis

基　　金：国家自然科学基金项目(51269032);吉林省教育厅项目(吉教科合字[2015]第39号)

摘　　要：为实现牛粪与水稻秸秆资源化利用,采用批式试验,分别研究了预处理剂种类(H_2O_2、H_2SO_4、NaOH)、预处理剂浓度(2%、4%、6%)及牛粪与水稻秸秆物料比(1∶1、2∶1、4∶1)对牛粪与水稻秸秆混合厌氧发酵产气效果的影响。结果表明,采用2%H2O_2预处理剂,物料配比控制在1∶1,系统平均原料产气率为398.0 m L·g^(-1),发酵效果最佳。动力学研究发现,一级动力学模型与Modified Gompertz方程均可较为准确地对牛粪与水稻秸秆混合厌氧发酵产气过程进行动态模拟,其中,Modified Gompertz方程的模拟效果更优。In order to achieve the resources utilization of rice straw and cattle manure,the effect of 3 kinds of pre-treatment agents （H 2 O2 ,H2SO4 , NaOH ） ,different concentrations of pretreatment agents （ 2% , 4% , 6% ） and the raw material ratios of cattle manure and rice straw （1：1, 2：1, 4：1） on anaerobic fermentation of mixed cattle ma-nure and rice straw were evaluated by batch tests. The results showed that H2O2 was the optimum pretreatment agent of rice straw,the optimum concentration was 2%,and the best raw material ratio of cattle manure and rice straw was 1： 1. The average production rate of biogas was 398. 0 mL＊g-1 . At the same time,the dynamics research found that the first order kinetic model and Modified Gompertz model system both could simulate the process of biogas produc-tion in the cattle manure and rice straw mixed fermentation system. The Modified Gompertz model system was more suitable for describing the anaerobic fermentation process of producing biogas.

关 键 词：牛粪 水稻秸秆 预处理 一级动力学模型 MODIFIED Gompertz方程 

分 类 号：X71[环境科学与工程—环境工程]