混合培养系统厌氧发酵同步产氢产乙醇研究(英文)

采用连续流槽式搅拌反应系统(ACSTR)作为反应装置,以制糖废水为底物,污水处理厂剩余污泥为反应的启动污泥,着重研究底物质量浓度和HRT对系统同步产氢产乙醇性能的影响.结果表明,在不同的底物质量浓度和HRT条件下,乙醇产量和氢气产量有着相同的变化趋势.当底物质量浓度和HRT分别为6 g COD/L和6 h时,乙醇和氢气产量分别为1.62/7.25 mmol/(L·h)and 2.97/8.73 mmol/(L·h).线性分析发现乙醇产量和氢气产量之间有很好的相关性,线性方程分别为y=0.156 6x+0.4487(r2=0.8778)和y=0.148 8x+1.671 4(r2=0.9838).

Fermentative coproduction of hydrogen and ethanol with mixed anaerobic culture environment

This paper investigated the effect of substrate concentration and HRT on the pro-duction of hydrogen and ethanol from sugary wastewater in an anaerobic continuous stirred tank reactor （ ACSTR） .Aerobic pretreatment sludge was inoculated into ACSTR system and the indigenous sludge microbial populations were used as hydrogen producer .Experimental results indicated that hydrogen/ethanol production has a similar variation tendency in the re-lationships between substrate concentrations , HRTs, hydrogen production and ethanol pro-duction.The highest hydrogen/ethanol production rate of 1.62~7.25 mmol/· （ L· h） and 2.97~8.73 mmol/（L· h） was documented for substrate concentration （6 g COD/L） and HRT （6 h） condition, respectively.Linear regression results show that ethanol production rate （ y） and hydrogen production rate （ x） were proportionately correlated which can be ex-pressed as y=0.156 6x＋0.448 7 （r2 =0.8778） for substrate concentration condition and y=0.148 8x＋1.671 4 （r2 =0.983 8） for HRT condition.