期刊
JOURNAL OF HYDROLOGY
卷 519, 期 -, 页码 3153-3162出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhydrol.2014.10.045
关键词
Bioclogging; Porous media; EPS; Saturated hydraulic conductivity
资金
- National Natural Science Foundation of China [41172209]
- Supporting Program of the Twelfth Five-year Plan for Science and Technology Research of China [2012BAB12B03]
- National Public Welfare Industry for Science and Technology of China [201301090]
- European Commission under the EU-China Environmental Sustainability Programme [DCI-ASIE/2013/323-261]
Bioclogging of natural porous media occurs frequently under a wide range of conditions. It may influence the performance of permeable reactive barrier and constructed wetland. It is also one of the factors that determine the effect of artificial groundwater recharge and in situ bioremediation process. In this study, a series of percolation column experiments were conducted to simulate bioclogging process in porous media. The predominant bacteria in porous media which induced clogging were identified to be Methylobacterium, Janthinobacterium, Yersinia, Staphylococcus and Acidovorax, most of which had been shown to effectively produce viscous extracellular polymeric substances (EPS). The column in which EPS production was maximized also coincided with the largest reduction in saturated hydraulic conductivity of porous media. In addition, carbon concentration was the most significant factor to affect polysaccharide, protein and EPS secretion, followed by phosphorus concentration and temperature. The coupled effect of carbon and phosphorus concentration was also very important to stimulate polysaccharide and EPS production. (C) 2014 Elsevier B.V. All rights reserved.
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