期刊
JOURNAL OF ENVIRONMENTAL SCIENCES
卷 26, 期 12, 页码 2554-2561出版社
SCIENCE PRESS
DOI: 10.1016/j.jes.2014.06.034
关键词
Attachment; Flow velocity; Humic acid; Initial concentration; Porous media; Transport
资金
- Chinese Academy of Sciences [KZCX2-XB3-13-02]
- National Natural Science Foundation of China [41271315, 91025018]
- Program for New Century Excellent Talents in University [NCET-13-0487]
- Northwest AF University [2014YQ007]
Understanding the transport of humic acids (HAs) in porous media can provide important and practical evidence needed for accurate prediction of organic/inorganic contaminant transport in different environmental media and interfaces. A series of column transport experiments was conducted to evaluate the transport of HA in different porous media at different flow velocities and influent HA concentrations. Low flow velocity and influent concentration were found to favor the adsorption and deposition of HA onto sand grains packed into columns and to give higher equilibrium distribution coefficients and deposition rate coefficients, which resulted in an increased fraction of HA being retained in columns. Consequently, retardation factors were increased and the transport of HA through the columns was delayed. These results suggest that the transport of HA in porous media is primarily controlled by the attachment of HA to the solid matrix. Accordingly, this attachment should be considered in studies of HA behavior in porous media. (c) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
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