Effect of process parameters on enhanced biohydrogen production from tequila vinasse via the lactate-acetate pathway 机翻标题: 暂无翻译,请尝试点击翻译按钮。

来源
Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies
年/卷/期
2019 / 273 /
页码
618-626
ISSN号
0960-8524
作者单位
Department of Environmental Technology, Centro de Investigación y Asistencia en Tecnología y Dise?o del Estado de Jalisco;Department of Environmental Engineering and Water Technology, UNESCO-IHE, Institute for Water Education;Department of Environmental Technology, Centro de Investigación y Asistencia en Tecnología y Dise?o del Estado de Jalisco;Department of Environmental Technology, Centro de Investigación y Asistencia en Tecnología y Dise?o del Estado de Jalisco;
作者
Octavio García-Depraect;Eldon R. Rene;Víctor F. Diaz-Cruces;Elizabeth León-Becerril;
摘要
In this study, a lactate-type fermentation entailing the consumption of lactate and acetate (lactate-acetate pathway) is proposed to deal with lactic acid bacteria (LAB) inhibition during the production of biohydrogen (bioH2) from tequila vinasse. The effects of total solids content, substrate concentration, nutrient formulation and inoculum addition on bioH2production performance were investigated. Batch experiments were performed in a 3-L completely mixed reactor at 35?°C and pH 6.5–5.8. The lactate-acetate pathway mediated consistent bioH2production which was influenced by inoculum addition followed by substrate concentration, nutrient formulation and solids content. Maximum bioH2production rate (225?NmL/L-h) and yield (124?NmL/g VSadded) were achieved by removing suspended solids and enhancing nutrient content, respectively. Illumina sequencing-based analysis revealed a dominance ofClostridiumin the inoculum, which together with LAB and acetic acid bacteria shaped a keystone cluster for avoiding LAB inhibition while ensuring consistent bioH2production performance.
机翻摘要
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关键词/主题词
Dark fermentation;Hydrogen-producing bacteria;Lactic acid bacteria;Gompertz model;Monod model;
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