Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration

	Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration
	Wei, Xiaorong 1; Shao, Mingan 1,2; Du, Lina 1; Horton, Robert 3
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2014-12-01
卷号	26 期号:12 页码:2554-2561
关键词	Attachment Flow Velocity Humic Acid Initial Concentration Porous Media Transport
文献子类	Article
英文摘要	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.
WOS关键词	DISSOLVED ORGANIC-MATTER ; COLLOID DEPOSITION ; COLUMN EXPERIMENTS ; SOIL COLUMNS ; SUBSTANCES ; ADSORPTION ; RETENTION ; SORPTION ; REMOVAL ; WATER
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000347664100021
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/68445]
专题	中国科学院地理科学与资源研究所
通讯作者	Wei, Xiaorong
作者单位	1.Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Iowa State Univ, Dept Agron, Ames, IA 50011 USA
推荐引用方式 GB/T 7714	Wei, Xiaorong,Shao, Mingan,Du, Lina,et al. Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2014,26(12):2554-2561.
APA	Wei, Xiaorong,Shao, Mingan,Du, Lina,&Horton, Robert.(2014).Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,26(12),2554-2561.
MLA	Wei, Xiaorong,et al."Humic acid transport in saturated porous media: Influence of flow velocity and influent concentration".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 26.12(2014):2554-2561.