Strategy for sophorolipid pretreatment to enhance the production of volatile fatty acids from rubberwood hydrolysates during anaerobic fermentation of sludge
文献类型： 外文期刊
作者： Bie, Wenxuan 1 ; Yin, Fen 2 ; Ma, Xiaojun 1 ; Zhang, Yutian 1 ; Li, Dongna 1 ; Li, Jianing 3 ; Zheng, Yingying 1 ;
作者机构： 1.Tianjin Univ Sci & Technol, Coll light Ind Sci & Engn, Tianjin 300222, Peoples R China
2.Qinghai Inst Technol, Engn Coll, Xining 810016, Peoples R China
3.Chinese Acad Trop Agr Sci, Key Lab Biol & Genet Resources Rubber Tree, State Key Lab Incubat Base Cultivat & Physiol Trop, Rubber Res Inst,Minist Agr, Haikou 571101, Peoples R China
关键词： Volatile fatty acids; Sophorolipid-pretreated; Anaerobic fermentation; Rubberwood hydrolysate; Waste activated sludge
期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：6.2； 五年影响因子：6.2 ）
ISSN： 0926-6690
年卷期： 2025 年 229 卷
页码：
收录情况： SCI
摘要： Anaerobic fermentation has become an important approach for value-added utilization of biomass. Herein, we proposed a strategy to achieve enhanced production of volatile fatty acids (VFAs) through the combination of sophorolipid (SL)-pretreated sludge and rubberwood hydrolysates during anaerobic fermentation. Experimental results showed that the maximal VFAs production reached 3668.28 mg/L with 0.6 g/g TSS of SL, which was approximately 154.33 % higher than that of the control group. With the increase of rubberwood hydrolysates content, the anaerobic fermentation of SL-pretreated sludge changed from butyric acid-type to acetic acid-type, wherein the proportion of acetic acid in VFAs increased from 51.99 % to 76.02 %, whereas that of propionic acid decreased from 11.72 % to 3.71 %. The improved VFAs production was attributed to the effective disintegration of sludge, release of organic matter, inhibition of methanation, and increased diversity of microbial populations. This study provided new ideas for enhanced VFAs production from waste bioresources.
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