title: Removal mechanisms and plant species selection by bioaccumulative factors in surface flow constructed wetlands (CWs): In the case of triclosan.
abstract: Plants can bioaccumulate triclosan and bond with microbes and sediments in constructed wetlands (CWs) as well. However, little is known regarding the species-specific removal mechanism of CWs components and the selection of suitable wetland plant species for triclosan disposal. In this work, the use of bioaccumulation factors (BAFs) and biota to sediment accumulation factors (BSAFs) for choosing the best triclosan removal plant species was studied in laboratory-scale CWs. By the end of the experiment, over 80% of triclosan was removed and a specie-effect distribution was revealed in CWs with emergent, submerged and floating plants. By mass balance calculation, negative correlation between triclosan concentration in plants and degradation process was observed. The significant correlations between Log BSAFs values and triclosan concentration in plants or degradation contribution made it possible and reasonable in wetland plants selection. Introductions on plant species were provided considering the target removal process or regulation method. This work provided new information on plant species selection in CWs for triclosan removal or its emergency remediation by using bioaccumulative factors.
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
authors.forename: Congcong
authors.initials: C
authors.lastname: Zhao
authors.affiliation: Environment Research Institute, Shandong University, Jinan 250100, China.
authors.forename: HuiJun
authors.initials: H
authors.lastname: Xie
authors.affiliation: School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China.
authors.forename: Jingtao
authors.initials: J
authors.lastname: Xu
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan 250100, China. Electronic address: zhangjian00@sdu.edu.cn.
authors.forename: Jian
authors.initials: J
authors.lastname: Zhang
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
authors.forename: Shuang
authors.initials: S
authors.lastname: Liang
authors.affiliation: Key Laboratory of Colloid and Interface Chemistry, Shandong University, Jinan 250100, China.
authors.forename: Jingcheng
authors.initials: J
authors.lastname: Hao
authors.affiliation: School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia.
authors.forename: Huu Hao
authors.initials: HH
authors.lastname: Ngo
authors.affiliation: School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia.
authors.forename: Wenshan
authors.initials: W
authors.lastname: Guo
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Xu
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Jinan 250100, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Environment Research Institute, Shandong University, Jinan 250100, China.
authors.forename: Jingmin
authors.initials: J
authors.lastname: Wang
mesh_terms: D001673:Biodegradation, Environmental; D052918:Environmental Restoration and Remediation / Q000379:methods*; D010944:Plants / Q000378:metabolism*; D014260:Triclosan / Q000032:analysis* / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism; D053833:Wetlands
chemical_list: D014874:Water Pollutants, Chemical; D014260:Triclosan
keywords: Bioaccumulative factors; CWs; Plant species selection; Removal mechanism; Triclosan