食物垃圾
发酵
热液循环
化学
食品科学
生产(经济)
废物管理
食品加工
挥发性脂肪酸
制浆造纸工业
环境科学
化学工程
工程类
瘤胃
宏观经济学
经济
作者
Jun Yin,Kun Wang,Yu-Qiang Yang,Dongsheng Shen,Meizhen Wang,Mei Han
标识
DOI:10.1016/j.biortech.2014.08.062
摘要
Food waste (FW) was pretreated by a hydrothermal method and then fermented for volatile fatty acid (VFAs) production. The soluble substance in FW increased after hydrothermal pretreatment (⩽200 °C). Higher hydrothermal temperature would lead to mineralization of the organic compounds. The optimal temperature for organic dissolution was 180 °C, at which FW dissolved 42.5% more soluble chemical oxygen demand than the control. VFA production from pretreated FW fermentation was significantly enhanced compared with the control. The optimal hydrothermal temperature was 160 °C with a VFA yield of 0.908 g/g VSremoval. Butyrate and acetate were the prevalent VFAs followed by propionate and valerate. FW fermentation was inhibited after 200 °C pretreatment. The VFAs were extracted from the fermentation broth by liquid–liquid extraction. The VFA recovery was 50–70%. Thus, 0.294–0.411 g VFAs could be obtained per gram of hydrothermally pretreated FW (in dry weight) by this method.
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