光合-厌氧混合菌群生物共发酵产氢动力学研究  

Dynamic Characteristics of Co-fermentative Hydrogen Production by Mixed Photosynthetic and Anaerobic Consortium

作　　者：杜金宇 任学勇[2] 青春耀[3] 荆艳艳[3] 李林泽 王毅[3] DU Jinyu;REN Xueyong;QING Chunyao;JING Yanyan;LI Linze;WANG Yi(School of Energy and Power Engineering,Henan University of Animal Husbandry and Economy,Zhengzhou 450011,China;College of Materials Science and Technology,Beijing Forestry University,Beijing 100083,China;Key Laboratory of New Materials and Facilities for Rural Renewable Energy,Ministry of Agriculture and Rural Affairs,Henan Agricultural University,Zhengzhou 450002,China)

机构地区：[1]河南牧业经济学院能源与动力工程学院,郑州450011 [2]北京林业大学材料科学与技术学院,北京100083 [3]河南农业大学农业农村部农村可再生能源新材料与装备重点实验室,郑州450002

出　　处：《农业机械学报》2019年第3期294-299,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金面上项目(51376056);河南省科技发展计划项目(182102110396;152300410072);河南省高等教育教学改革研究与实践项目(2017SJGLX246)

摘　　要：以光合、厌氧细菌混合菌群为对象,研究了混合菌群共发酵产氢过程中产氢动力学特性,建立了混合菌群生物共发酵产氢过程中关于菌体质量浓度、底物利用及产氢量的动力学模型。将光照因素引入混合菌群产氢动力学模型中,采用同伦摄动法(HPM)对非线性动力学模型进行求解,得到了混合菌群共发酵产氢过程中菌体质量浓度、底物利用及产氢量的动力学模型。通过与实验数据对比,模型与实验数据基本一致,能够很好地反映出共发酵产氢过程中产氢参数的变化趋势。对建立的3个动力学模型的动力学参数的相互关系及其敏感性进行了分析,研究发现动力学参数中最大比生长速率对模型结果的影响最大,最大比生长速率对菌体质量浓度影响的变化量达到79%,对底物质量浓度影响的变化量达到118%,对产氢量影响的变化量达到98. 4%。Aiming to combine the advantage of photo-fermentation and dark-fermentation for biohydrogen production,the mixed photosynthetic and anaerobic bacteria consortium(MPAC)was used to study the co-fermentative hydrogen production.The kinetic characteristics of co-fermentative hydrogen production by MPAC were studied.The kinetic models of cell growth,substrate utilization and hydrogen production of co-fermentative hydrogen production by MPAC were established.The illumination factor was firstly introduced into the kinetic model of bio-hydrogen production.The nonlinear differential equation was solved by homotopy perturbation method(HPM)and the kinetic models were obtained.By comparing with the experimental data,the model can be consistent with the experimental data,which can well reflect the change of biomass concentration,substrate concentration and hydrogen production in the process of co-fermentative hydrogen production.The relationship between the kinetic parameters and the sensitivity of the three established kinetic models were analyzed.The results showed that the maximum specific growth rate of the kinetic models had the biggest influence on the results,and the change of the cell growth reached 79%,the change of substrate concentration reached 118%,and the change of hydrogen produced reached 98.4%.The three established models were suitable for describing the kinetic characteristics of biohydrogen production.

关 键 词：生物制氢 混合菌群 共发酵 动力学模型 同伦摄动 敏感性分析 

分 类 号：TK6[动力工程及工程热物理—生物能]