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题名: Mitigation of Wastewater-Borne Chlorpyrifos in Constructed Wetlands: the Role of Vegetation on Partitioning
作者: Wang, Chuan1, 2; Liu, Biyun1; Xu, Dong1; Zhang, Dan1, 2; He, Feng1; Zhou, Qiaohong1; Wu, Zhenbin1
关键词: constructed wetlands (CWs) ; chlorpyrifos ; macrophyte ; partitioning pattern ; microbial degradation
刊名: POLISH JOURNAL OF ENVIRONMENTAL STUDIES
发表日期: 2017
DOI: 10.15244/pjoes/64375
卷: 26, 期:1, 页:347-354
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Constructed wetlands (CWs) are regarded as a risk mitigation strategy for alleviating the risks associated with agricultural runoff that contains pesticides. We investigated the partitioning pattern of wastewater-borne chlorpyrifos, a widely used organophosphorus pesticide, in non-vegetated and vegetated CWs. Removal rates of chlorpyrifos calculated from inflow and outflow concentrations ranged from 87.65% to 96.57%. The average removal rate was significantly higher and more stable in vegetated CWs than in non-vegetated CWs. As determined using a mass-balance method, outflows, macrophytes, substrate micro-degradation, and "other" accounted for 5.23%, 22.7%, 15.96%, and 56.11%, respectively, of the chlorpyrifos in the vegetated system. Of all Iris pseudoacorus organs examined, the rhizome was dominant in biomass and gathered the largest amount of chlorpyrifos. Except for the uptake of chlorpyrifos by plants, the primary difference between vegetated and non-vegetated CWs was that there was a relatively low potential for chlorpyrifos micro-degradation and volatilization and photolysis in vegetated CWs than in non-vegetated CWs. Identification of this partitioning pattern elucidates the mechanisms underlying chlorpyrifos removal from wastewater in CWs.
关键词[WOS]: PESTICIDE ; SOIL ; BIODEGRADATION ; PLANTS ; PHYTOREMEDIATION ; INSECTICIDES ; DEGRADATION ; CALIFORNIA ; REDUCTION ; CHEMICALS
语种: 英语
项目资助者: Major Science and Technology Program for Water Pollution Control and Treatment of China's 12th Five-Year Plan(2012ZX07101007-005) ; National Natural Science Foundation of China(30870221 ; 51178452 ; 50909091)
WOS记录号: WOS:000394830000037
ISSN号: 1230-1485
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/28966
Appears in Collections:水环境工程研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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