Removal of polycyclic aromatic hydrocarbons from different soil fractions by persulfate oxidation

doi:10.1016/j.jes.2018.10.001

	Removal of polycyclic aromatic hydrocarbons from different soil fractions by persulfate oxidation
	Liao, Xiaoyong 1; Liu, Qiongzhi 1,2; Li, You 1,2; Gong, Xuegang 1,2; Cao, Hongying 1
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2019-04-01
卷号	78 页码:239-246
关键词	Soil fraction Persulfate oxidation PAHs Organic matter Bond
ISSN号	1001-0742
DOI	10.1016/j.jes.2018.10.001
通讯作者	Liao, Xiaoyong(liaoxy@igsnrr.ac.cn)
英文摘要	Removal of polycyclic aromatic hydrocarbons (PAHs) from different soil fractions of contaminated soil was investigated by using activated persulfate oxidation remediation in our research. The results showed that the light fraction, which accounted for only 10% of the soil, contained 30% of the PAHs at a concentration of 4352 mg/kg. The heavy fraction contained more high-molecular-weight PAHs, and the total PAH concentration was 625 mg/kg. After being oxidized, the removal rate of PAHs was 39% in the light fraction and nearly 90% in the heavy fraction. Among the different fractions of the heavy fraction, humic acid contained the highest concentration of PAHs, and consequently, the highest removal efficiency of PAHs was also in humic acid. Compared with the light fraction, the heavy fraction has more aromatic compounds and those compounds were broken down during the oxidation process, which may be the removal mechanism involved in the oxidation of high-ring PAHs. Similarly, the enhancement of C=C bonds after oxidation can also explain the poor removal of high-ring PAHs in the light fraction. These results imply that different fractions of soil vary in composition and structure, leading to differences in the distribution and oxidation efficiencies of PAHs. (c) 2018 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
资助项目	Key Research Program of the Chinese Academy of Sciences[ZDRW-ZS-2016-5-5] ; Key Research Program of the Chinese Academy of Sciences[KFZD-SW-303] ; Science and Technology Plan of Beijing[D16110900470000]
WOS关键词	ORGANIC-MATTER ; SOURCE IDENTIFICATION ; HUMIC SUBSTANCES ; FENTONS REAGENT ; PAHS ; SORPTION ; CARBON ; PHENANTHRENE ; REMEDIATION ; IMPACT
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000463377700022
资助机构	Key Research Program of the Chinese Academy of Sciences ; Science and Technology Plan of Beijing
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/48132]
专题	中国科学院地理科学与资源研究所
通讯作者	Liao, Xiaoyong
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing Key Lab Environm Damage Assessment & Reme, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liao, Xiaoyong,Liu, Qiongzhi,Li, You,et al. Removal of polycyclic aromatic hydrocarbons from different soil fractions by persulfate oxidation[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2019,78:239-246.
APA	Liao, Xiaoyong,Liu, Qiongzhi,Li, You,Gong, Xuegang,&Cao, Hongying.(2019).Removal of polycyclic aromatic hydrocarbons from different soil fractions by persulfate oxidation.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,78,239-246.
MLA	Liao, Xiaoyong,et al."Removal of polycyclic aromatic hydrocarbons from different soil fractions by persulfate oxidation".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 78(2019):239-246.