Lab-scale removal of PAHs in contaminated soil using electrical resistance heating: Removal efficiency and alteration of soil properties

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 土壤环境科学实验室

	Lab-scale removal of PAHs in contaminated soil using electrical resistance heating: Removal efficiency and alteration of soil properties
	Han, Ziyu; Jiao, Wentao; Tian, Yao; Hu, Jian; Han, Denglun
刊名	CHEMOSPHERE
	2020-01
卷号	239 页码:1-12
关键词	Electrical resistance heating Thermal desorption PAHs Removal efficiency Soil properties
ISSN号	0045-6535
英文摘要	Electrical resistance heating (ERH) is a promising thermal remediation method for treating volatile soil pollutants. However, the remediation of soil contaminated by polycyclic aromatic hydrocarbons (PAHs) based on lab-scale ERH devices must be extensively studied to determine the factors affecting the remediation. Therefore, this study used a lab-scale ERH equipment to investigate the influence factors of ERH, PAH removal efficiency, and changes in soil properties through the treatment process. The results suggested that moisture and salinity were basic factors affecting electric conductive capability; heating 15 g of soil to the target temperature required at least 4g solution of 0.1% salt. Meanwhile, higher electric strength can ensure heating efficiency and maximum temperature. The removal efficiency of PAHs, which is highly related to boiling point, was significantly affected by its benzene rings and bond structure; during 90 min ERH treatment, more than 40% of the pollutants were removed synchronously with the evaporation of water. Hence, co-boiling with water was confirmed to be the primary mechanism of ERH. The influence of the treatment on soil properties (organic matter, particle size, fertility, enzymatic activity) was limited, suggesting that soil functionality can be retained by ERH. (C) 2019 Published by Elsevier Ltd.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45120]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Han, Ziyu,Jiao, Wentao,Tian, Yao,et al. Lab-scale removal of PAHs in contaminated soil using electrical resistance heating: Removal efficiency and alteration of soil properties[J]. CHEMOSPHERE,2020,239:1-12.
APA	Han, Ziyu,Jiao, Wentao,Tian, Yao,Hu, Jian,&Han, Denglun.(2020).Lab-scale removal of PAHs in contaminated soil using electrical resistance heating: Removal efficiency and alteration of soil properties.CHEMOSPHERE,239,1-12.
MLA	Han, Ziyu,et al."Lab-scale removal of PAHs in contaminated soil using electrical resistance heating: Removal efficiency and alteration of soil properties".CHEMOSPHERE 239(2020):1-12.