ELECTROKINETIC REMEDIATION TECHNOLOGY OF HEAVY METAL CONTAMINATED SOIL BASED ON IMPROVING SOIL ELECTRICAL CONDUCTIVITY

doi:10.37190/epe210401

	ELECTROKINETIC REMEDIATION TECHNOLOGY OF HEAVY METAL CONTAMINATED SOIL BASED ON IMPROVING SOIL ELECTRICAL CONDUCTIVITY
	Liu, Jiangang 1; Zhang, Wei 2; Liu, Mingwei 3; Zhang, Hao 2
	2021
发表期刊	ENVIRONMENT PROTECTION ENGINEERING
ISSN	0324-8828
卷号	47 期号:4 页码:5-17
摘要	An electrokinetic remediation technique taking Cr(VI) as an example is proposed to improve the conductivity of contaminated soil, which significantly increases the current density in the soil. The improvement of soil conductivity was achieved by continuous spraying of NaCl solution with a concentration of 4 g.dm(-3) on the soil surface. The distances of electrode pairs were 2.0 m and 1.5 m, respectively. The heavy metal-contaminated soil thickness was 25 cm, and the DC power supply voltage was 90 V. The experiment demonstrated that under the condition of continuous spraying of NaCl solution on the soil surface, the current density variation was related to the salt content in the soil, and the current density in the soil generally increased linearly with time. The effectiveness of soil remediation is related to the electric field strength and current density, and there exists an optimal electric field that can reduce the heavy metal content in the soil at any point by minimizing the electric field strength and current density. Most of the heavy metals can be concentrated within a diameter of about 15 cm around the anode under the optimal electric field, which can be remediated after removing the soil.
关键词	SANDY PH
DOI	10.37190/epe210401
收录类别	SCIE
语种	英语
WOS研究方向	Engineering
WOS类目	Engineering, Environmental
WOS记录号	WOS:000740934500001
出版者	TECHNICAL UNIV WROCLAW
原始文献类型	Article
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.library.ouchn.edu.cn/handle/39V7QQFX/168452
专题	国家开放大学江苏分部
通讯作者	Zhang, Wei
作者单位	1.Hohai Univ, Sch Earth Sci & Engn, Nanjing 211106, Peoples R China; 2.Hohai Univ, Coll Environm, Nanjing 210098, Peoples R China; 3.Jiangsu Open Univ, Coll Civil Engn, Nanjing 210098, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jiangang,Zhang, Wei,Liu, Mingwei,et al. ELECTROKINETIC REMEDIATION TECHNOLOGY OF HEAVY METAL CONTAMINATED SOIL BASED ON IMPROVING SOIL ELECTRICAL CONDUCTIVITY[J]. ENVIRONMENT PROTECTION ENGINEERING,2021,47(4):5-17.
APA	Liu, Jiangang,Zhang, Wei,Liu, Mingwei,&Zhang, Hao.(2021).ELECTROKINETIC REMEDIATION TECHNOLOGY OF HEAVY METAL CONTAMINATED SOIL BASED ON IMPROVING SOIL ELECTRICAL CONDUCTIVITY.ENVIRONMENT PROTECTION ENGINEERING,47(4),5-17.
MLA	Liu, Jiangang,et al."ELECTROKINETIC REMEDIATION TECHNOLOGY OF HEAVY METAL CONTAMINATED SOIL BASED ON IMPROVING SOIL ELECTRICAL CONDUCTIVITY".ENVIRONMENT PROTECTION ENGINEERING 47.4(2021):5-17.