Rapid start-up of ethanol-type fermentation in biological hydrogen production reactor from molasses wastewater
Research on anaerobic fermentation biohydrogen production from molasses wastewater in a continuous stirred-tank reactor (CSTR) was conducted.Emphasis was focused on the rapid start-up of ethanol-type fermentation in biological hydrogen production reactor.It was found that an initial biomass of 17.71 g/L,temperature of 35℃±1℃,hydraulic retention time (HRT) of 6 h,the reactor could start-up the ethanol-type fermentation at the range of 2000-4000 mg/L and at pH from 3.23 to 4.39 in 12 days with COD (chemical oxygen demand),respectively.The content of hydrogen was 45.77％ in the fermentation biogas and the COD removal was 8％.As the hydrogen production system experienced low pH (3.23-4.0),the ethanol-produce bacterial can resume easier compared with other fermentation bacteria which are difficult to restore.In addition,when the pH value ranged from 4.0 to 4.63,the hydrogen production increased with the content of ethanol in liquid fermentation products increased.However,it was detected that the yield of hydrogen decreased with a high content of ethanol in the pH value ranged from 3.23 to 4.0,which demonstrated pH value played the most important role on hydrogen production within low pH.
Biohydrogen production Anaerobic fermentation Ethanol-type fermentation Molasses wastewater pH
Yue Li-ran LI Yong-feng HAN Wei XU Jing-li CHEN Hong YANG Chuan-Dinq
School of Forestry,Northeast Forestry University,Harbin 150040,China School of Forestry,Northeast Forestry University,Harbin 150040,China College of Chemistry and Chemic College of Chemistry and Chemical Engineering,Shanghai University Engineering and Science,Shanghai 2
国际会议
哈尔滨
英文
623-631
2010-07-24（万方平台首次上网日期，不代表论文的发表时间）