Hydrogen-producing capability of anaerobic activated sludge in three type fermentations in a continuous stirred-tank reactor

摘要：

A continuous stirred-tank reactor (CSTR) was introduced to anaerobic activated sludge process for hydrogen production by fermentation and hydrogen-producing capabilities of three typical fermentation, i.e. propionic acid fermentation, butyric acid fermentation and ethanol fermentation were investigated under the same organic loading rate (OLR) and temperature. The reactor was fed with diluted molasses continuously with a COD concentration of 5000 mg/L and a hydraulic retention time (HRT) of 8 h under the temperature 35℃. The results indicated that the specific hydrogen-producing rate of the anaerobic activated sludge in ethanol type fermentation reached 2.96 mol per kilogram mixed liquid volatile suspended solid (MLVSS) per day (mol/kgMLVSS/d), while 0.57 mol/kgMLVSS/d in butyric acid type fermentation and 0.022 mol/kgMLVSS/d in propionic acid type fermentation, respectively. The hydrogen-producing capability of the anaerobic activated sludge in ethanol type fermentation was 4.11 times as much as that in butyric acid type fermentation and 148 times in propionic acid type fermentation. This result suggested that ethanol type fermentation is the optimum process for hydrogen production by organic wastewater fermentation.

关键词： hydrogen production fermentation anaerobic activated sludge specific hydrogen production rate

作者: Jianzheng Li Guochen Zheng Junguo He Sheng Changa Zhi Qin

作者单位: State Key Laboratory of urban water source and environment,Harbin Institute of Technology,Harbin 150 School of Chemical AND Environmental Engineering,Harbin University of Science AND Technology,Harbin

会议类型: 国际会议

会议名称: 2008年生物质能源技术国际会议

会议地点: 广州

会议语种:英文

页码: 662-669

在线出版日期: 2008-12-03（万方平台首次上网日期，不代表论文的发表时间）