Enhanced lactic acid production from the anaerobic co-digestion of swine manure with apple or potato waste via ratio adjustment
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
作者机构：
关键词： Co-digestion; Swine manure; Apple waste; Potato waste; Lactic acid
期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）
ISSN： 0960-8524
年卷期： 2020 年 318 卷
页码：
收录情况： SCI
摘要： The valorization of organic waste into lactic acid (LA) via co-digestion has attracted tremendous research interests in recent years. This study investigated the feasibility of intensifying the LA accumulation from anaerobic digestion (AD) of swine manure (SM) by adding apple waste (AW) or potato waste (PW). Results indicated that AW or PW obviously enhanced the accumulation of LA, and when the optimal mixing ratio of AW or PW to SM of 75:25, the maximum concentrations of LA were 27.61 and 8.91 g COD/L, which were around 3.53and 1.14 folds of that of the mono-digestion of SM, respectively. Meanwhile, the co-digestion of SM and AW showed significantly higher LA production than that of SM and PW (p < 0.05). High reducing sugar content of AW contributed to LA accumulation in AD process. In addition, AW increased the relative abundance of Lactobacillus and Clostridium, thus benefited the production of LA.
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