Influence of Anionic Surfactant on Saturated Hydraulic Conductivity of Loamy Sand and Sandy Loam Soils

doi:10.3390/w9060433

	Influence of Anionic Surfactant on Saturated Hydraulic Conductivity of Loamy Sand and Sandy Loam Soils
	Peng, Zhenyang 1,2; Darnault, Christophe J. G.3; Tian, Fuqiang 1; Baveye, Philippe C.4; Hu, Hongchang 1
刊名	WATER
	2017-06-01
卷号	9 期号:6 页码:15
关键词	surfactant hydraulic conductivity soil clogging adsorption
ISSN号	2073-4441
DOI	10.3390/w9060433
通讯作者	Peng, Zhenyang(zhenypeng@163.com)
英文摘要	Surfactants released into the terrestrial environment in large amounts can potentially alter the physical, chemical and biological properties of soils, particularly the saturated hydraulic conductivity (K-s). Unfortunately findings regarding this process are quite limited. In this study, column tests were used to analyze the effects of Aerosol 22, a widely used anionic surfactant, on K-s of loamy sand and sandy loam soils. Solutions were injected into columns from the bottom with controlled pressure heads. Both the overall K-s of columns and the K-s of 6 layers at distances of 0-1 cm, 1-3 cm, 3-5 cm, 5-7 cm, 7-9 cm, and 9-10 cm from the bottom, were continuously monitored before and after the surfactant injections. Results showed that the overall K-s of all columns decreased after 2-4 pore volumes of the surfactant injections. However, stabilization and even increase at the beginning of the surfactant injection was also observed due to the different K-s variations in different layers. Specifically, a surfactant injection of 2-4 pore volumes continuously decreased the K-s of the 0-1 cm layers which yielded a K-s reduction of two orders of magnitude and dominated the K-s variations of the column. In contrast, an increase in the K-s of the 1-3 cm and 3-5 cm layers was more likely, while K-s variation of the 5-10 cm layers was less likely. We hypothetically attributed the K-s variations to the swelling of clay, the collapse of soil aggregates and subsequent particle displacements from surfactant adsorption, which caused pore clogging in the bottom 0-1 cm layer and higher porosities in the layers above. The adsorption of the surfactant aggregates and crystallization were also possibly thought to cause a pore clogging in the bottom layer thus decrease the surfactant concentration from the inlet, the severity of which affects these layers less at greater distances from the inlet. In view of the uncertainty showed by the experimental results, we also suggest to include more replicate columns in future studies, so as to increase the repeatability of the measurements.
资助项目	Key Laboratory of Water Cycle and Related Land Surface Processes ; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences[WL2015004] ; U.S. Department of Agriculture, National Institute of Food and Agriculture (NIFA), National Research Initiative (NRI) Competitive Grant Program[2008-35102-19159] ; U.S. Department of Agriculture, National Institute of Food and Agriculture (NIFA), National Research Initiative (NRI) Competitive Grant Program[2008-35102-20653] ; National Science Foundation of China ; State Key Laboratory of Hydroscience and Engineering of Tsinghua University[2016-KY-03]
WOS关键词	WASTE-WATER ; LIQUID-CHROMATOGRAPHY ; NONIONIC SURFACTANTS ; CONTAMINATED SOIL ; GREYWATER REUSE ; SEWAGE-SLUDGE ; BEHAVIOR ; IRRIGATION ; EXFILTRATION ; ENVIRONMENT
WOS研究方向	Water Resources
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000404559900071
资助机构	Key Laboratory of Water Cycle and Related Land Surface Processes ; Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences ; U.S. Department of Agriculture, National Institute of Food and Agriculture (NIFA), National Research Initiative (NRI) Competitive Grant Program ; National Science Foundation of China ; State Key Laboratory of Hydroscience and Engineering of Tsinghua University
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/63045]
专题	中国科学院地理科学与资源研究所
通讯作者	Peng, Zhenyang
作者单位	1.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100084, Peoples R China 3.Clemson Univ, Dept Environm Engn & Earth Sci, Lab Hydrogeosci & Biol Engn, LG Rich Environm Lab, 342 Comp Court, Anderson, SC 29625 USA 4.Univ Paris Saclay, AgroParisTech, Unite ECOSYS, Ave Lucien Bretignieres, F-78850 Thiverval Grignon, France
推荐引用方式 GB/T 7714	Peng, Zhenyang,Darnault, Christophe J. G.,Tian, Fuqiang,et al. Influence of Anionic Surfactant on Saturated Hydraulic Conductivity of Loamy Sand and Sandy Loam Soils[J]. WATER,2017,9(6):15.
APA	Peng, Zhenyang,Darnault, Christophe J. G.,Tian, Fuqiang,Baveye, Philippe C.,&Hu, Hongchang.(2017).Influence of Anionic Surfactant on Saturated Hydraulic Conductivity of Loamy Sand and Sandy Loam Soils.WATER,9(6),15.
MLA	Peng, Zhenyang,et al."Influence of Anionic Surfactant on Saturated Hydraulic Conductivity of Loamy Sand and Sandy Loam Soils".WATER 9.6(2017):15.