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A combined process coupling phytoremediation and in situ flushing for removal of arsenic in contaminated soil
Yan, Xiulan; Liu, Qiuxin; Wang, Jianyi; Liao, Xiaoyong1
2017-07-01
Source PublicationJOURNAL OF ENVIRONMENTAL SCIENCES
ISSN1001-0742
Volume57Pages:104-109
Corresponding AuthorLiao, Xiaoyong(yanxl@igsnrr.ac.cn)
AbstractPhytoremediation and soil washing are both potentially useful for remediating arsenic (As)-contaminated soils. We evaluated the effectiveness of a combined process coupling phytoremediation and in situ soil flushing for removal of As in contaminated soil through a pilot study. The results showed that growing Pteris vittata L. (P.v.) accompanied by soil flushing of phosphate (P.v./Flushing treatment) could significantly decrease the total As concentration of soil over a 37 day flushing period compared with the single flushing (Flushing treatment). The P.v./Flushing treatment removed 54.04% of soil As from contaminated soil compared to 47.16% in Flushing treatment, suggesting that the growth of P. vittata was beneficial for promoting the removal efficiency. We analyzed the As fractionation in soil and As concentration in soil solution to reveal the mechanism behind this combined process. Results showed that comparing with the control treatment, the percent of labile arsenate fraction significantly increased by 17% under P.v./Flushing treatment. As concentration in soil solution remained a high lever during the middle and later periods (51.26-56.22 mg/L), which was significantly higher than the Flushing treatment. Although soil flushing of phosphate for more than a month, P. vittata still had good accumulation and transfer capacity of As of the soil. The results of the research revealed that combination of phytoremediation and in situ soil flushing is available to remediate As-contaminated soils. (C) 2016 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
KeywordArsenic Soil flushing Phytoremediation Pteris vittata L. Phosphate
DOI10.1016/j.jes.2016.10.015
WOS KeywordHYPERACCUMULATOR PTERIS-VITTATA ; WASHING SOLUTIONS ; PHOSPHATE ROCK ; PLANT-GROWTH ; ACCUMULATION ; PHYTOAVAILABILITY ; PHYTOEXTRACTION ; GROUNDWATER ; METALS ; FORMS
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41271339] ; National High Technology Research and Development Program (863) of China[2012AA06A201] ; Beijing Municipal Science and Technology Project[Z141100000914011]
Funding OrganizationNational Natural Science Foundation of China ; National High Technology Research and Development Program (863) of China ; Beijing Municipal Science and Technology Project
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000405972600012
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/62761
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLiao, Xiaoyong
Affiliation1.Chinese Acad Sci, Beijing Key Lab Environm Damage Assessment & Reme, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Yan, Xiulan,Liu, Qiuxin,Wang, Jianyi,et al. A combined process coupling phytoremediation and in situ flushing for removal of arsenic in contaminated soil[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2017,57:104-109.
APA Yan, Xiulan,Liu, Qiuxin,Wang, Jianyi,&Liao, Xiaoyong.(2017).A combined process coupling phytoremediation and in situ flushing for removal of arsenic in contaminated soil.JOURNAL OF ENVIRONMENTAL SCIENCES,57,104-109.
MLA Yan, Xiulan,et al."A combined process coupling phytoremediation and in situ flushing for removal of arsenic in contaminated soil".JOURNAL OF ENVIRONMENTAL SCIENCES 57(2017):104-109.
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