期刊
BIORESOURCE TECHNOLOGY
卷 274, 期 -, 页码 430-438出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2018.12.010
关键词
Waste activated sludge; Anaerobic fermentation; Tofu residue; Volatile fatty acid
资金
- National Natural Science Foundation of China (NSFC) [51779088, 51779089, 51478170]
- Planned Science and Technology Project of Hunan Province, China [2017WK2091]
In this study, an economical and eco-friendly strategy (i.e., adding tofu residue (TR) into waste activated sludge (WAS)) to enhance volatile fatty acid (VFA) production was reported. Experimental results indicated that the maximal VFA yield at T/W ratio (TR/WAS, the ratio of the volatile suspended solids (VSS)) of 0.64 on 5 d was 240.8 mg COD/g VSS, which was 10.2 and 1.1-fold of that in sole WAS and sole TR, respectively. The feasible fermentation time was shortened by 2 days, as compared with sole WAS or sole TR. Mechanism investigation showed that the addition of TR promoted solubilization, hydrolysis, and acidogenesis processes. The synergistic effect of microorganisms contained in TR and WAS may be responsible for the enhancement of lignocellulose hydrolysis and VFA generation. Appropriate amounts of mineral elements in TR benefited solubilization, the soluble iron and calcium in TR could contribute to the phosphorus removal in fermentation liquor.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据