Synergistic effect of yeast integrated with alkyl polyglucose for short-chain fatty acids production from sludge anaerobic fermentation

被引:7
作者
Lv, Jinghua [1 ,2 ]
Yao, Lirong [1 ]
Liang, Yuge [1 ]
He, Siqi [1 ]
Zhang, Shujia [1 ]
Shi, Tianyu [1 ]
Gong, Li [1 ]
Li, Hailong [1 ]
Li, Yunbei [1 ]
Yu, Tonghuan [1 ]
Zhang, Yanzhuo [1 ]
机构
[1] Henan Normal Univ, Sch Environm, Key Lab Yellow River & Huai River Water Environm &, Minist Educ,Henan Key Lab Environm Pollut Control, Xinxiang 453007, Peoples R China
[2] Henan Normal Univ, Sch Environm, Xinxiang 453007, Henan Province, Peoples R China
基金
中国国家自然科学基金;
关键词
Anaerobic fermentation; Short chain fatty acids; Yeast; Alkyl polyglucose; Waste activated sludge; WASTE ACTIVATED-SLUDGE; POLYMERIC SUBSTANCES EPS; FOOD WASTE; PRETREATMENT; HYDROLYSIS; ETHANOL; PREFERMENTATION; METHANOGENESIS; DEWATERABILITY; ENHANCEMENT;
D O I
10.1016/j.biortech.2022.128092
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
An efficient strategy for short-chain fatty acid (SCFA) production from sludge anaerobic fermentation was proposed with the combination of yeast and alkyl polyglucose (APG). It revealed that the synergetic effect of yeast and APG could boost the SCFA concentration to the maximum value of 2800.34 mg COD/L within 9 days at 0.20 g/g suspended solids (SS) yeast and 0.20 g/g SS APG, which was significantly higher than that of its counterparts. Interestingly, the sludge solubilization, the biodegradability of fermentation substrate, as well as the acidification of hydrolyzed products, was evidently improved in the coexistence of APG and yeast. The ac-tivities of hydrolytic enzymes and acetate kinase were also stimulated, whereas the coenzyme F420 was inhibited. The synergetic effect of yeast and APG used in this work enriches the study of carbon resource recovery from sludge anaerobic fermentation.
引用
收藏
页数:10
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