Lactate- and acetate-based biohydrogen production through dark co-fermentation of tequila vinasse and nixtamalization wastewater: Metabolic and microbial community dynamics 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 / 282 /
页码
236-244
ISSN号
0960-8524
作者单位
Ctr Invest & Asistencia Tecnol & Diseno Estado Ja, Dept Environm Technol, Av Normalistas 800, Guadalajara 44270, Jalisco, Mexico;Univ Nacl Autonoma Mexico, Inst Ingn, Unidad Acad Juriquilla, Blvd Juriquilla 3001, Queretaro 76230, Mexico;UNESCO IHE Inst Water Educ, Dept Environm Engn & Water Technol, POB 3015, NL-2601 DA Delft, Netherlands;Ctr Invest & Asistencia Tecnol & Diseno Estado Ja, Dept Environm Technol, Av Normalistas 800, Guadalajara 44270, Jalisco, Mexico;Ctr Invest & Asistencia Tecnol & Diseno Estado Ja, Dept Environm Technol, Av Normalistas 800, Guadalajara 44270, Jalisco, Mexico;Ctr Invest & Asistencia Tecnol & Diseno Estado Ja, Dept Environm Technol, Av Normalistas 800, Guadalajara 44270, Jalisco, Mexico;
作者
Garcia-Depraect, Octavio;Valdez-Vazquez, Idania;Rene, Eldon R.;Gomez-Romero, Jacob;Lopez-Lopez, Alberto;Leon-Becerril, Elizabeth;
摘要
The aim of this work was to study the metabolic and microbial community dynamics during dark co-fermentation of 80% tequila vinasse and 20% nixtamalization wastewater (w/w). Batch co-fermentations were performed in a 3-L well-mixed reactor at 35 degrees C and pH 5.5. In correspondence to Illumina MiSeq sequencing and reactor monitoring, changes in metabolites and microbial communities were characterized by three main stages: (i) a first stage during which lactate and acetate producers dominated and consumed the major part of fermentable carbohydrates, (ii) a second stage in which lactate and acetate were consumed by emerging hydrogen-producing bacteria (HPB) in correlation with bioH(2) (100 NmL/L-h or 1200 NmL/L-reactor) and butyrate production, and (iii) a third stage during which non-HPB outcompeted HPB after bioH(2) production ceased. Altogether, the results of this study suggest that cooperative interactions between lactate producers and lactate- and acetateconsuming HPB could be attributed to lactate- and acetate-based cross-feeding interactions.
机翻摘要
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关键词/主题词
Dark fermentation;Microbial dynamics;Hydrogen-producing bacteria;Lactic acid bacteria;Cross-feeding;
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