化工学报2012，Vol.63Issue(5)：1551-1557,7.DOI:10.3969/j.issn.0438-1157.2012.05.033
CSTR和ACR丁酸型发酵制氢系统的运行特性比较
Operation characteristic comparison of CSTR and ACR systems for hydrogen production by butyric acid type fermentation
摘要
Abstract
In order to structure a better continuous flow bioreactor mode for fermentative hydrogen production, a continuous stirred-tank reactor (CSTR) and an anaerobic contact digester (ACR) were evaluated with diluted molasses as raw material, and their operation characteristics during starting and running were analyzed and compared. Inoculated with aerobic pretreated sewage sludge, both the reactors started up at (35 ±1l)°C with an initial volatile suspended sludge (MLVSS) of 4. 8 g · L-1, a hydraulic retention time (HRT) of 12 h and an influent chemical oxygen demand (COD) of 5000 mg · L-1. The pH was controlled at 5. 5-6. 0 in both fermentation systems during the whole operation period. The results showed that the CSTR could reach steady butyric acid type fermentation in 15 d, much faster than in 25 d for ACR. During the steady state, the butyrate was dominated among the soluble metabolites and counted for 53% and 50% of the total liquid products in CSTR and ACR system, respectively. The hydrogen-producing efficiency was higher for ACR than for CSTR, indicating its better ability to maintain biomass. The substrate acidification ratio, the hydrogen production rate and specific hydrogen production rate of the sludge were 44% , 9 L · d-1 and 0. 15 L · (g MLVSS · d) -1, respectively, for the steady ACR system, and 1. 62, 2. 05 and 1. 15 times of corresponding values of CSTR system.关键词
发酵制氧/连续流搅拌槽式反应器(CSTR)/厌氧接触反应器(ACR)/运行特性/产氢效能Key words
fermentative hydrogen production/ continuous stirred-tank reactor (CSTR)/ anaerobic contact reactor (ACR)/ operation characteristic/ hydrogen-producing efficiency分类
能源科技引用本文复制引用
李建政,于泽,昌盛,苏晓煜..CSTR和ACR丁酸型发酵制氢系统的运行特性比较[J].化工学报,2012,63(5):1551-1557,7.基金项目
国家自然科学基金项目(51178136). （51178136）
