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Removal of polycyclic aromatic hydrocarbons from different soil fractions by persulfate oxidation
Liao, Xiaoyong1; Liu, Qiongzhi1,2; Li, You1,2; Gong, Xuegang1,2; Cao, Hongying1
2019-04-01
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
ISSN1001-0742
Volume78Pages:239-246
Corresponding AuthorLiao, Xiaoyong(liaoxy@igsnrr.ac.cn)
AbstractRemoval 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.
KeywordSoil fraction Persulfate oxidation PAHs Organic matter Bond
DOI10.1016/j.jes.2018.10.001
WOS KeywordORGANIC-MATTER ; SOURCE IDENTIFICATION ; HUMIC SUBSTANCES ; FENTONS REAGENT ; PAHS ; SORPTION ; CARBON ; PHENANTHRENE ; REMEDIATION ; IMPACT
Indexed BySCI
Language英语
Funding ProjectKey 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]
Funding OrganizationKey Research Program of the Chinese Academy of Sciences ; Science and Technology Plan of Beijing
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000463377700022
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/48133
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiao, Xiaoyong
Affiliation1.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
Recommended Citation
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.
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