产酸作用
食物垃圾
发酵
食品科学
化学
水解
生物量(生态学)
无氧运动
挥发性脂肪酸
乳酸菌
制浆造纸工业
厌氧消化
细菌
废物管理
生物化学
生物
农学
有机化学
甲烷
工程类
生理学
瘤胃
遗传学
作者
Lanting Wang,Zhongfang Lei,Xiaojing Yang,Chi Zhang,Chang Liu,Kazuya Shimizu,Zhenya Zhang,Tian Yuan
标识
DOI:10.1016/j.biortech.2022.128097
摘要
High treatment capacity for food waste (FW) is required due to the huge amount generated worldwide. Conversion of FW to volatile fatty acids (VFAs) via anaerobic fermentation is a promising technology; however, inhibition of VFAs production could easily occur at high loadings. In this study, Fe3O4 was used to enhance VFAs production in anaerobic fermentation of FW at high loading, and the mechanisms involved were revealed at microbial levels. Results showed that Fe3O4 significantly enhanced VFAs yield and VFAs productivity of microbes by 160% at high loading (substrate to inoculum (S/I) ratio of 3). The enhancement effect of Fe3O4 was mainly due to the accelerated hydrolysis of particulate/soluble organics, the enriched hydrolytic and acidogenic bacteria, and the reduced relative abundance of Lactobacillus. This study provides a new approach for the high-efficient treatment of FW at high loadings, while the performance and economic benefit should be further studied for practical application.
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