A combined process coupling phytoremediation and in situ flushing for removal of arsenic in contaminated soil

doi:10.1016/j.jes.2016.10.015

	A combined process coupling phytoremediation and in situ flushing for removal of arsenic in contaminated soil
	Yan, Xiulan ; Liu, Qiuxin ; Wang, Jianyi ; Liao, Xiaoyong 1
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES
	2017-07-01
卷号	57 页码:104-109
关键词	Arsenic Soil flushing Phytoremediation Pteris vittata L. Phosphate
ISSN号	1001-0742
DOI	10.1016/j.jes.2016.10.015
通讯作者	Liao, Xiaoyong(yanxl@igsnrr.ac.cn)
英文摘要	Phytoremediation 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.
资助项目	National Natural Science Foundation of China[41271339] ; National High Technology Research and Development Program (863) of China[2012AA06A201] ; Beijing Municipal Science and Technology Project[Z141100000914011]
WOS关键词	HYPERACCUMULATOR PTERIS-VITTATA ; WASHING SOLUTIONS ; PHOSPHATE ROCK ; PLANT-GROWTH ; ACCUMULATION ; PHYTOAVAILABILITY ; PHYTOEXTRACTION ; GROUNDWATER ; METALS ; FORMS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000405972600012
资助机构	National Natural Science Foundation of China ; National High Technology Research and Development Program (863) of China ; Beijing Municipal Science and Technology Project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/62760]
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, 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
推荐引用方式 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.