期刊
BIORESOURCE TECHNOLOGY
卷 362, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2022.127815
关键词
Hydrogen; Organic acids; Food waste; Dark fermentation; Genomic analysis; Salinity
资金
- Hong Kong Baptist University [RC-OFSGT2/20-21/SCI/010]
This study evaluated the combined impact of salinity and inoculum pretreatment on hydrogen production from food waste. The results showed that acid-treated inoculum had the highest H-2 yield under medium salinity levels. Genomic analysis and metabolic pattern revealed different fermentation types under different salinity levels. This study demonstrated the significance of inoculum pretreatment for the bioconversion of food waste.
This study evaluated the combined impact of salinity (2.5, 13, and 19.3 g NaCl/L) and inoculum pretreatment (acid/alkali) on the genomic and metabolic profiles of mesophilic fermentative bacteria for hydrogen (H-2) production from food waste. Experimental results revealed that acid-treated inoculum showed the highest H-2 yield (201.12 +/- 13.84 mL H-2/g of volatile solids added) under medium salinity levels compared to other experimental conditions. A 7-56% increase in H-2 yield was observed for pretreated inoculum than untreated inoculum. Genomic analysis and metabolic pattern revealed that the H-2 production was mainly through Clostridial-type fermentation under medium to high salinity levels, whereas Enterococcus-type fermentation under low salinity levels. Further, the genomic analysis uncovered that phyla Firmicutes (69.71-96.81%) and genus Clostridium sensu stricto 1 (33.28-94.04%) dominated during the exponential gas production phase. Overall, this study showed the significance of inoculum pretreatment for the bioconversion of food waste at different salinity levels.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据