Optimization and modeling of biohydrogen production by mixed bacterial cultures from raw cassava starch  

作　　者：Shaojie Wang Zhihong Ma Ting Zhang Meidan Bao Haijia Su 

机构地区：[1]Beijing Key Laboratory of Bioprocess, Beijing University of Chemical Technology, Beijing 100029, China

出　　处：《Frontiers of Chemical Science and Engineering》2017年第1期100-106,共7页化学科学与工程前沿（英文版）

基　　金：The authors express their thanks for the support from the National Natural Science Foundation of China （Grant No. 21525625）, the National Basic Research Program of China （973 Program, Grant No. 2014CB745100）, the National High Technology Research and Development Program of China （863 Program, Grant No. 2013AA020302）.

摘　　要：The production of bio-hydrogen from raw cassava starch via a mixed-culture dark fermentation process was investigated. The production yield of H2 was optimized by adjusting the substrate concentration and the microorganism mixture ratio. A maximum H2 yield of 1.72 mol H2/mol glucose was obtained with a cassava starch concentration of 10 g/L to give a 90% utilization rate. The kinetics of the substrate utilization and of the generation of both hydrogen and volatile fatty acids were also investigated. The substrate utilization follows pseudo first order reaction kinetics, whereas the production of both H2 and the VFAs correlate with the Gompertz equation. These results show that cassava is a good candidate for the production of biohydrogen.The production of bio-hydrogen from raw cassava starch via a mixed-culture dark fermentation process was investigated. The production yield of H2 was optimized by adjusting the substrate concentration and the microorganism mixture ratio. A maximum H2 yield of 1.72 mol H2/mol glucose was obtained with a cassava starch concentration of 10 g/L to give a 90% utilization rate. The kinetics of the substrate utilization and of the generation of both hydrogen and volatile fatty acids were also investigated. The substrate utilization follows pseudo first order reaction kinetics, whereas the production of both H2 and the VFAs correlate with the Gompertz equation. These results show that cassava is a good candidate for the production of biohydrogen.

关 键 词：CASSAVA BIOHYDROGEN mixed cultures kinetics 

分 类 号：TQ116.2[化学工程—无机化工] TS235.2[轻工技术与工程—粮食、油脂及植物蛋白工程]