期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 44, 期 11, 页码 4355-4360出版社
AMER CHEMICAL SOC
DOI: 10.1021/es9016766
关键词
-
资金
- Natural Science Foundation of China [50625825, 50708106, 50978243]
- Foundation for the Author of the Outstanding PhD Thesis of China
The contribution of extracellular polymeric substances (EPS), including loosely bound EPS (LB-EPS) and tightly bound EPS (TBEPS), to the aggregation of both aerobic and anaerobic sludge is explored using the extended DLVO theory. It is observed that the aggregation abilities of both sludge samples decrease with the extraction of LB-EPS and TB-EPS, implying the crucial roles of EPS in sludge aggregation. Furthermore, through analyzing the interaction energy curves of sludge before and after the EPS extraction using the extended DLVO theory, it is found that both LB-EPS and TB-EPS have a substantial contribution to the sludge aggregation. The interaction energy of LB-EPS is always negative, suggesting that the LB-EPS always display a positive effect on the sludge aggregation. On the other hand, the interaction energy of TB-EPS is not always negative, depending on the separation distance between sludge cells. These results imply that the LB-EPS and TBEPS have different contributions to the sludge aggregation.
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