LadislasGerenteChazarencEtAl2015

Reference

Ladislas, S., Gerente, C., Chazarenc, F., Brisson, J., Andres, Y. (2015) Floating treatment wetlands for heavy metal removal in highway stormwater ponds. Ecological Engineering, 80:85-91. (Scopus )

Abstract

The aim of this study was to investigate the feasibility of using a floating treatment wetland for removal of dissolved metals from urban runoff under full-scale conditions. The study site is a retention pond located in northeast Nantes (France) that receives the storm water runoff from a section of highway (27,000 vehicles/day, basin surface 375m2). Three floating marshes were anchored in the retention pond, each raft with a surface area of 1.5m2 (125cm×120cm) supporting 16 plants (8 Juncus, 8 Carex). After 4 months, plant samples were harvested, mineralized and analyzed by atomic spectrometry absorption to determine cadmium, nickel and zinc concentrations. Analysis showed Ni concentration in leaves between 23 and 31µg/g<inf>drymatter</inf>, and between 113 and 131µg/g in roots. Accumulation of Zn was 45-80µg/g in leaves and 168-210µg/g in roots. The root/leaf ratio, between 2.6 and 5.7 for Ni and Zn respectively, highlights the important function of roots in heavy metal accumulation. No cadmium accumulation was detected in plants. All three metals were also present in the biofilm on roots. Moreover, roots demonstrated a capacity to filter particulates. This study shows that floating marshes can effectively remove some metals from stormwater ponds. © 2014 Elsevier B.V.

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@ARTICLE { LadislasGerenteChazarencEtAl2015,
    AUTHOR = { Ladislas, S. and Gerente, C. and Chazarenc, F. and Brisson, J. and Andres, Y. },
    TITLE = { Floating treatment wetlands for heavy metal removal in highway stormwater ponds },
    JOURNAL = { Ecological Engineering },
    YEAR = { 2015 },
    VOLUME = { 80 },
    PAGES = { 85-91 },
    NOTE = { cited By 1 },
    ABSTRACT = { The aim of this study was to investigate the feasibility of using a floating treatment wetland for removal of dissolved metals from urban runoff under full-scale conditions. The study site is a retention pond located in northeast Nantes (France) that receives the storm water runoff from a section of highway (27,000 vehicles/day, basin surface 375m2). Three floating marshes were anchored in the retention pond, each raft with a surface area of 1.5m2 (125cm×120cm) supporting 16 plants (8 Juncus, 8 Carex). After 4 months, plant samples were harvested, mineralized and analyzed by atomic spectrometry absorption to determine cadmium, nickel and zinc concentrations. Analysis showed Ni concentration in leaves between 23 and 31µg/g<inf>drymatter</inf>, and between 113 and 131µg/g in roots. Accumulation of Zn was 45-80µg/g in leaves and 168-210µg/g in roots. The root/leaf ratio, between 2.6 and 5.7 for Ni and Zn respectively, highlights the important function of roots in heavy metal accumulation. No cadmium accumulation was detected in plants. All three metals were also present in the biofilm on roots. Moreover, roots demonstrated a capacity to filter particulates. This study shows that floating marshes can effectively remove some metals from stormwater ponds. © 2014 Elsevier B.V. },
    AUTHOR_KEYWORDS = { Floating treatment wetland; Heavy metal removal; Root biofilm; Stormwater pond },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.ecoleng.2014.09.115 },
    KEYWORDS = { Absorption spectroscopy; Atomic spectroscopy; Bioaccumulation; Biofilms; Cadmium; Heavy metals; Lakes; Nickel; Plants (botany); Runoff; Sewage; Storm sewers; Storms; Wetlands; Zinc, Atomic spectrometry; Dissolved metals; Floating treatment wetlands; Heavy metal accumulation; Heavy metal removal; Storm water runoff; Stormwater pond; Zinc concentration, Metals, Carex; Juncus },
    SOURCE = { Scopus },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84930047130&partnerID=40&md5=506c7d3791f67f2fc20eca3fda16758b },
}

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