The biohydrogen production efficiency and performance of hydrogen-producing acetogen in a four-compartment anaerobic baffled reactor (ABR) were studied by gradually increasing the influent normal molasses wastewater (NMWW) proportion. When the influent NMWW proportion increased to 55%, ABR could develop microbial community with methanogenic function in 63 days and reach a stable operation. When the influent NMWW proportion increased to 80% and reached a stable state, ethanol fermentation was established from butyric acid fermentation in the first three compartments, whereas butyric acid fermentation in the fourth compartment was strengthened. The average biohydrogen production yield and biohydrogen production capacity by COD removal increased to as high as 12.85 L/day and 360.22 L/kg COD when the influent NMWW proportion increased from 55% to 80%, respectively. Although the biogas yield and the specific biogas production rate reached 61.54 L/day and 232 L/kg MLVSS·day, the biohydrogen production yield and specific biohydrogen production rate were only 12.85 L/day and 48 L/kg MLVSS·day, which results in hydrogen consumption by homoacetogenesis and methanogenesis.

中文翻译：

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增加厌氧折流板反应器中糖蜜废水比例的生物产氢特性和产氢产乙酸的性能

通过逐步增加进水正常糖蜜废水（NMWW）的比例，研究了四室厌氧折流板反应器（ABR）的生物产氢效率和产氢产乙酸的性能。当进水NMWW比例提高到55％时，ABR可在63天内发展出具有产甲烷功能的微生物群落，并达到稳定的运行。当进水NMWW比例增加到80％并达到稳定状态时，前三个区室由丁酸发酵建立了乙醇发酵，而第四区室的丁酸发酵得到了加强。当进水NMWW比例从55％增加到80％时，通过去除COD产生的平均生物氢产量和生物氢生产能力分别高达12.85 L / day和360.22 L / kg COD。分别。尽管沼气产量和比沼气产量分别达到61.54 L / day和232 L / kg MLVSS·天，但沼气产量和比沼气产量仅为12.85 L / day和48 L / kg MLVSS·天。均乙酸和甲烷生成导致氢消耗减少。