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Phytoremediation of landfill leachate with Colocasia esculenta, Gynerum sagittatum and Heliconia psittacorum in constructed wetlands

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Abstract
This study assessed the accumulation of Cd (II), Hg (II), Cr (VI) and Pb (II) in Gynerium sagittatum (Gs), Colocasia esculenta (Ce) and Heliconia psittacorum (He) planted in constructed wetlands treating synthetic landfill leachate. Sixteen bioreactors were operated in two experimental blocks. Metal concentrations in the influent and effluent; root, stem, branch and leaves of plants were analysed, as well as COD, N-NH4+, TKN, T, pH, ORP, DO, and EC. Average removal efficiencies of COD, TKN and NH4+-N were 66, 67 and 72%, respectively and heavy metal removal ranged from 92 to 98% in all units. Cr (VI) was not detected in any effluent sample. The bioconcentration factors (BCF) were 100 -102. The BCF of Cr (VI) was the lowest: 0.59 and 2.5 (L kg−1) for Gs and He respectively; whilst Cd (II) had the highest (130–135 L kg−1) for Gs. Roots showed a higher metal content than shoots. Translocation factors (TF) were lower, He was the plant exhibiting TFs >1 for Pb (II), Cr (T) and Hg (II) and 0.4–0.9 for Cd (II) and Cr (VI). The evaluated plants demonstrate their suitability for phytoremediation of landfill leachate and all of them can be categorized as metals accumulators.
Keywords
heavy metals, landfill leachate, constructed wetlands, translocation factor, Colombia, bioconcentration factor, HORIZONTAL SUBSURFACE FLOW, DOMESTIC WASTE-WATER, ACCUMULATION, PLANTS, CADMIUM, TRANSLOCATION, CHROMIUM, REMOVAL, METALS, ZN

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Citation

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MLA
Madera-Parra, CA, EJ Peña-Salamanca, MR Peña, et al. “Phytoremediation of Landfill Leachate with Colocasia Esculenta, Gynerum Sagittatum and Heliconia Psittacorum in Constructed Wetlands.” INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 17.1 (2015): 16–24. Print.
APA
Madera-Parra, C., Peña-Salamanca, E., Peña, M., Rousseau, D., & Lens, P. (2015). Phytoremediation of landfill leachate with Colocasia esculenta, Gynerum sagittatum and Heliconia psittacorum in constructed wetlands. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION, 17(1), 16–24.
Chicago author-date
Madera-Parra, CA, EJ Peña-Salamanca, MR Peña, Diederik Rousseau, and PNL Lens. 2015. “Phytoremediation of Landfill Leachate with Colocasia Esculenta, Gynerum Sagittatum and Heliconia Psittacorum in Constructed Wetlands.” International Journal of Phytoremediation 17 (1): 16–24.
Chicago author-date (all authors)
Madera-Parra, CA, EJ Peña-Salamanca, MR Peña, Diederik Rousseau, and PNL Lens. 2015. “Phytoremediation of Landfill Leachate with Colocasia Esculenta, Gynerum Sagittatum and Heliconia Psittacorum in Constructed Wetlands.” International Journal of Phytoremediation 17 (1): 16–24.
Vancouver
1.
Madera-Parra C, Peña-Salamanca E, Peña M, Rousseau D, Lens P. Phytoremediation of landfill leachate with Colocasia esculenta, Gynerum sagittatum and Heliconia psittacorum in constructed wetlands. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION. 2015;17(1):16–24.
IEEE
[1]
C. Madera-Parra, E. Peña-Salamanca, M. Peña, D. Rousseau, and P. Lens, “Phytoremediation of landfill leachate with Colocasia esculenta, Gynerum sagittatum and Heliconia psittacorum in constructed wetlands,” INTERNATIONAL JOURNAL OF PHYTOREMEDIATION, vol. 17, no. 1, pp. 16–24, 2015.
@article{5779026,
  abstract     = {This study assessed the accumulation of Cd (II), Hg (II), Cr (VI) and Pb (II) in Gynerium sagittatum (Gs), Colocasia esculenta (Ce) and Heliconia psittacorum (He) planted in constructed wetlands treating synthetic landfill leachate. Sixteen bioreactors were operated in two experimental blocks. Metal concentrations in the influent and effluent; root, stem, branch and leaves of plants were analysed, as well as COD, N-NH4+, TKN, T, pH, ORP, DO, and EC. Average removal efficiencies of COD, TKN and NH4+-N were 66, 67 and 72%, respectively and heavy metal removal ranged from 92 to 98% in all units. Cr (VI) was not detected in any effluent sample. The bioconcentration factors (BCF) were 100 -102. The BCF of Cr (VI) was the lowest: 0.59 and 2.5 (L kg−1) for Gs and He respectively; whilst Cd (II) had the highest (130–135 L kg−1) for Gs. Roots showed a higher metal content than shoots. Translocation factors (TF) were lower, He was the plant exhibiting TFs >1 for Pb (II), Cr (T) and Hg (II) and 0.4–0.9 for Cd (II) and Cr (VI). The evaluated plants demonstrate their suitability for phytoremediation of landfill leachate and all of them can be categorized as metals accumulators.},
  author       = {Madera-Parra, CA and Peña-Salamanca, EJ and Peña, MR and Rousseau, Diederik and Lens, PNL},
  issn         = {1522-6514},
  journal      = {INTERNATIONAL JOURNAL OF PHYTOREMEDIATION},
  keywords     = {heavy metals,landfill leachate,constructed wetlands,translocation factor,Colombia,bioconcentration factor,HORIZONTAL SUBSURFACE FLOW,DOMESTIC WASTE-WATER,ACCUMULATION,PLANTS,CADMIUM,TRANSLOCATION,CHROMIUM,REMOVAL,METALS,ZN},
  language     = {eng},
  number       = {1},
  pages        = {16--24},
  title        = {Phytoremediation of landfill leachate with Colocasia esculenta, Gynerum sagittatum and Heliconia psittacorum in constructed wetlands},
  url          = {http://dx.doi.org/10.1080/15226514.2013.828014},
  volume       = {17},
  year         = {2015},
}

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