Improving production of lactic acid and volatile fatty acids from dairy cattle manure and corn straw silage: Effects of mixing ratios and temperature

文献类型： 外文期刊

第一作者： Lian, Tianjing

作者： Lian, Tianjing;Zhang, Wanqin;Cao, Qitao;Wang, Shunli;Dong, Hongmin;Yin, Fubin;Lian, Tianjing;Zhang, Wanqin;Wang, Shunli;Dong, Hongmin;Yin, Fubin;Lian, Tianjing

作者机构：

关键词： Anaerobic co-fermentation; Short-chain carboxylic acids; Agricultural waste; Hydrolysis performance; Bacterial communities

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.889； 五年影响因子：11.139 ）

ISSN： 0960-8524

年卷期： 2022 年 359 卷

页码：

收录情况： SCI

摘要： Anaerobic co-fermentation (AcoF) of dairy cattle manure (DCM) and corn straw silage (CSS) for producing lactic acid (LA) and volatile fatty acids (VFAs) was investigated. Batch experiments were conducted at seven different DCM/CSS ratios and at mesophilic and thermophilic temperatures. Results indicated that the highest concentration of LA was 17.50 +/- 0.70 g/L at DCM:CSS ratio of 1:3 and thermophilic temperature, while VFAs was 18.23 +/- 2.45 g/L at mono-CSS fermentation and mesophilic temperature. High solubilization of thermophilic conditions contributed to LA accumulation in AcoF process. Presence of the CSS increased the relative abundance of Lactobacillus for LA production at thermophilic. Meanwhile, the abundance of Bifidobacterium was increased when CSS was added at mesophilic, which could conduce to VFAs production. This study provides a new route for enhancing the biotransformation of DCM and CSS into short-chain fatty acids, potentially bringing economic benefits to agricultural waste treatment.

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