Effect of temperature on hydrogen fermentation of cellulose
The effect of the temperature on the hydrogen fermentation of cellulose was evaluated by a continuous experiment using mixed culture without pretreatment. The experiments were conducted at three different temperatures which were Mesophilic 37±2 °C, Thermophilic 55 ±2°C and Hyper-thermophilic 80 ±2°C with influent concentration of cellulose 5 gL-1 and hydraulic retention time HRT 10 days. A stable hydrogen production was observed at each condition. In the mesophilic condition, the maximum hydrogen yield was 0.6 mmol H2/g cellulose. While, in the thermophilic and Hyper-thermophilic conditions, the maximum hydrogen yields were 16.91 and 21.97 mmol H2/g cellulose. The mesophilic reactor produced methane gas with 26％; However, No methane gas was detected in the thermophilic and hyper-thermophilic reactors. The main by-products as COD mass balance were acetic and butyric acids, which reached to 8, 7 and 8％ and 15, 10 and 10％ at the effluent of mesophilic, thermophilic and hyper-thermophilic reactors. The results show that operational temperature is a key in sustainable biohydrogen production and the thermophilic condition or higher were the best conditions.
Bio-hydrogen Cellulose Temperature Dark Fermentation Continuous mode CSTR
Gadow S. I. Yu-You Li
Dept.of Agric. Microbial.,National Research Center,Dokki,Cairo, Egypt Dept. of Civil and Environment Dept.of Civil and Environmental Engineering,Tohoku University, Sendai 980-8579,Japan
国际会议
天津
英文
100-108
2011-11-12（万方平台首次上网日期，不代表论文的发表时间）