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Substrate- and plant-mediated removal of citrate-coated silver nanoparticles in constructed wetlands

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Abstract
The growing production and commercial application of engineered nanoparticles (ENPs), such as Ag, CeO2, and TiO2 nanoparticles, induce a risk to the environment as ENPs are released during their use. The comprehensive assessment of the environmental risk that the ENPs pose involves understanding their fate and behavior in wastewater treatment systems. Therefore, in this study, we investigate the effect of plants and different substrates on the retention and distribution of citrate-coated silver nanoparticles (Ag-NPs) in batch experimental setups simulating constructed wetlands (CWs). Sand, zeolite, and biofilm-coated gravel induce efficient removal (85, 55, and 67 %, respectively) of Ag from the water phase indicating that citrate-coated Ag-NPs are efficiently retained in CWs. Plants are a minor factor in retaining Ag as a large fraction of the recovered Ag remains in the water phase (0.42–0.58). Most Ag associated with the plant tissues is attached to or taken up by the roots, and only negligible amounts (maximum 3 %) of Ag are translocated to the leaves under the applied experimental conditions.
Keywords
Silver, Nanomaterial, Wastewater treatment, ICP-MS, Phragmites australis, WASTE-WATER, ENGINEERED NANOMATERIALS, FATE, TRANSFORMATION, ENVIRONMENT, COMMUNITIES, SEDIMENT, IMPACT

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Citation

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MLA
Auvinen, Hannele, Viviana Vásquez Sepúlveda, Diederik Rousseau, et al. “Substrate- and Plant-mediated Removal of Citrate-coated Silver Nanoparticles in Constructed Wetlands.” ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.21 (2016): 21920–21926. Print.
APA
Auvinen, H., Vásquez Sepúlveda, V., Rousseau, D., & Du Laing, G. (2016). Substrate- and plant-mediated removal of citrate-coated silver nanoparticles in constructed wetlands. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, 23(21), 21920–21926.
Chicago author-date
Auvinen, Hannele, Viviana Vásquez Sepúlveda, Diederik Rousseau, and Gijs Du Laing. 2016. “Substrate- and Plant-mediated Removal of Citrate-coated Silver Nanoparticles in Constructed Wetlands.” Environmental Science and Pollution Research 23 (21): 21920–21926.
Chicago author-date (all authors)
Auvinen, Hannele, Viviana Vásquez Sepúlveda, Diederik Rousseau, and Gijs Du Laing. 2016. “Substrate- and Plant-mediated Removal of Citrate-coated Silver Nanoparticles in Constructed Wetlands.” Environmental Science and Pollution Research 23 (21): 21920–21926.
Vancouver
1.
Auvinen H, Vásquez Sepúlveda V, Rousseau D, Du Laing G. Substrate- and plant-mediated removal of citrate-coated silver nanoparticles in constructed wetlands. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH. 2016;23(21):21920–6.
IEEE
[1]
H. Auvinen, V. Vásquez Sepúlveda, D. Rousseau, and G. Du Laing, “Substrate- and plant-mediated removal of citrate-coated silver nanoparticles in constructed wetlands,” ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH, vol. 23, no. 21, pp. 21920–21926, 2016.
@article{8102873,
  abstract     = {The growing production and commercial application of engineered nanoparticles (ENPs), such as Ag, CeO2, and TiO2 nanoparticles, induce a risk to the environment as ENPs are released during their use. The comprehensive assessment of the environmental risk that the ENPs pose involves understanding their fate and behavior in wastewater treatment systems. Therefore, in this study, we investigate the effect of plants and different substrates on the retention and distribution of citrate-coated silver nanoparticles (Ag-NPs) in batch experimental setups simulating constructed wetlands (CWs). Sand, zeolite, and biofilm-coated gravel induce efficient removal (85, 55, and 67 %, respectively) of Ag from the water phase indicating that citrate-coated Ag-NPs are efficiently retained in CWs. Plants are a minor factor in retaining Ag as a large fraction of the recovered Ag remains in the water phase (0.42–0.58). Most Ag associated with the plant tissues is attached to or taken up by the roots, and only negligible amounts (maximum 3 %) of Ag are translocated to the leaves under the applied experimental conditions.},
  author       = {Auvinen, Hannele and Vásquez Sepúlveda, Viviana and Rousseau, Diederik and Du Laing, Gijs},
  issn         = {0944-1344},
  journal      = {ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH},
  keywords     = {Silver,Nanomaterial,Wastewater treatment,ICP-MS,Phragmites australis,WASTE-WATER,ENGINEERED NANOMATERIALS,FATE,TRANSFORMATION,ENVIRONMENT,COMMUNITIES,SEDIMENT,IMPACT},
  language     = {eng},
  number       = {21},
  pages        = {21920--21926},
  title        = {Substrate- and plant-mediated removal of citrate-coated silver nanoparticles in constructed wetlands},
  url          = {http://dx.doi.org/10.1007/s11356-016-7459-6},
  volume       = {23},
  year         = {2016},
}

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