title: Phytoremediation of water contaminated with mercury using Typha domingensis in constructed wetland.
abstract: The presence of mercury in aquatic environments is a matter of concern by part of the scientific community and public health organizations worldwide due to its persistence and toxicity. The phytoremediation consists in a group of technologies based on the use of natural occurrence or genetically modified plants, in order to reduce, remove, break or immobilize pollutants and working as an alternative to replace conventional effluent treatment methods due to its sustainability - low cost of maintenance and energy. The current study provides information about a pilot scale experiment designed to evaluate the potential of the aquatic macrophyte Typha domingensis in a constructed wetland with subsurface flow for phytoremediation of water contaminated with mercury. The efficiency in the reduction of the heavy metal concentration in wetlands, and the relative metal sorption by the T. domingensis, varied according to the exposure time. The continued rate of the system was 7 times higher than the control line, demonstrating a better performance and reducing 99.6±0.4% of the mercury presents in the water contaminated. When compared to other species, the results showed that the T. domingensis demonstrated a higher mercury accumulation (273.3515±0.7234 mg kg(-1)) when the transfer coefficient was 7750.9864±569.5468 L kg(-1). The results in this present study shows the great potential of the aquatic macrophyte T. domingensis in constructed wetlands for phytoremediation of water contaminated with mercury.
authors.affiliation: Centro Integrado de Recursos Pesqueiros e Aquicultura de Três Marias - CODEVASF, Av. Geraldo Rodrigues dos Santos, s/n Satélite, CEP 39.205-000, CP 11, Três Marias, MG, Brazil. Electronic address: marvitego@gmail.com.
authors.forename: Marcos Vinícius Teles
authors.initials: MV
authors.lastname: Gomes
authors.affiliation: Departamento de Engenharia Química, Universidade Federal de Sergipe, Av. Marechal Rondon, s/n Jardim Rosa Elza, CEP 49.100-000, São Cristovão, SE, Brazil.
authors.forename: Roberto Rodrigues
authors.initials: RR
authors.lastname: de Souza
authors.affiliation: Departamento de Engenharia Química, Universidade Federal de Sergipe, Av. Marechal Rondon, s/n Jardim Rosa Elza, CEP 49.100-000, São Cristovão, SE, Brazil.
authors.forename: Vinícius Silva
authors.initials: VS
authors.lastname: Teles
authors.affiliation: Centro Integrado de Recursos Pesqueiros e Aquicultura de Três Marias - CODEVASF, Av. Geraldo Rodrigues dos Santos, s/n Satélite, CEP 39.205-000, CP 11, Três Marias, MG, Brazil.
authors.forename: Érica
authors.initials: É
authors.lastname: Araújo Mendes
mesh_terms: D001673:Biodegradation, Environmental; D008628:Mercury / Q000302:isolation & purification / Q000378:metabolism*; D032401:Typhaceae / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000302:isolation & purification / Q000378:metabolism*; D018508:Water Purification / Q000379:methods*; D053833:Wetlands
chemical_list: D008628:Mercury; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Constructed wetlands; Mercury; Typha domingensis; Wastewater treatment