Experimental study on the water sensitivity of the powder-silver sand

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	Experimental study on the water sensitivity of the powder-silver sand
	Han, Zhi-Yong 2; Zheng, Xi-Lai 2; Chen, Ji-Hong 1; Yang, Tao 1
刊名	Shuikexue Jinzhan/Advances in Water Science
	2008-09-01
卷号	19 期号:5 页码:630-634
关键词	Aquifers Groundwater pollution Heavy metals Hydraulic conductivity Ions Kaolin Mercury (metal) Mercury compounds Organic pollutants Phenols Powder metals Sand Silver Experimental study Laboratory experiments Negative charge Particle release Removing rates Shearing force Water sensitivity Weight ratios
ISSN号	10016791
英文摘要	With the laboratory experiments of the saltwater and the freshwater replacing each other in the level sand-column, and taking the kaolin, illite, smectite, bivalent mercury ion (Hg2+) and the phenol (C6H5OH) as the examples, this article studies the water sensitivity characters of the powder-silver sand. The results show that the influence of the content of the kaolin and illite on the water sensitivity of the powder-silver sand is very slight, which results in the descense of only one grade even the content reaching 10% (weight ratio); but for the smectite, it causes the hydraulic conductivity descending sharply by above 2 grades when its content reaches 3% (weight ratio), and without water flowing through the sand columns at 4% (weight ratio). With the effect of the shearing force from high speed fluid, the removing rate of Hg2+ ion and phenol (C6H5OH) is 31.68% and 55.71% respectively. And the remnants can be hold out of the powder-silver sand columns with the particle's release and migration in water sensitivity process. The reason for the obvious difference between removing rates of two kinds of pollutants is that there are many negative charges on the particles surface which absorb the bivalent mercury ion (Hg2+) which makes its resorting rate is higher than the phenol (C6H5OH). So, we can make good use of the water sensitivity character of the powder-silver sand to build the impenetrable purdah and remove pollutions of the heavy metals and organic pollutants in the sand aquifer.
语种	中文
出版者	China Water Power Press
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111912]
专题	兰州理工大学
作者单位	1.College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China 2.Institute of Environment Science and Engineering, Ocean University of China, Qingdao 266003, China;
推荐引用方式 GB/T 7714	Han, Zhi-Yong,Zheng, Xi-Lai,Chen, Ji-Hong,et al. Experimental study on the water sensitivity of the powder-silver sand[J]. Shuikexue Jinzhan/Advances in Water Science,2008,19(5):630-634.
APA	Han, Zhi-Yong,Zheng, Xi-Lai,Chen, Ji-Hong,&Yang, Tao.(2008).Experimental study on the water sensitivity of the powder-silver sand.Shuikexue Jinzhan/Advances in Water Science,19(5),630-634.
MLA	Han, Zhi-Yong,et al."Experimental study on the water sensitivity of the powder-silver sand".Shuikexue Jinzhan/Advances in Water Science 19.5(2008):630-634.