Phytoremediation of Cd, Ni, Pb and Zn by Salvinia minima

Autor(es)

Iha, Danilo Sinhei ^{[1, 2]} ; Bianchini, Jr., Irineu ^{[1, 2]}

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Hidrobiol, BR-13565905 Sao Carlos, SP - Brazil

^[2] UFSCar Univ Fed SAo Carlos, Dept Hidrobiologia, Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF PHYTOREMEDIATION; v. 17, n. 10, p. 929-935, 2015.
• Citações Web of Science: 3

Resumo

Most metals disperse easily in environments and can be bioconcentrated in tissues of many organisms causing risks to the health and stability of aquatic ecosystems even at low concentrations. The use of plants to phytoremediation has been evaluated to mitigate the environmental contamination by metals since they have large capacity to adsorb or accumulate these elements. In this study we evaluate Salvinia minima growth and its ability to accumulate metals. The plants were cultivated for about 60days in different concentrations of Cd, Ni, Pb and Zn (tested alone) in controlled environmental conditions and availability of nutrients. The results indicated that S. minima was able to grow in low concentrations of selected metals (0.03mg L-1 Cd, 0.40mg L-1 Ni, 1.00mg L-1 Pb and 1.00mg L-1 Zn) and still able to adsorb or accumulate metals in their tissues when cultivated in higher concentrations of selected metals without necessarily grow. The maximum values of removal metal rates (mg m(2) day(-1)) for each metal (Cd = 0.0045, Ni = 0.0595, Pb = 0.1423 e Zn = 0.4046) are listed. We concluded that S. minima may be used as an additional tool for metals removal from effluent. (AU)

• Processo FAPESP: 10/15728-1 - Avaliação do crescimento de macrófitas aquáticas frente a diferentes concentrações de cádmio, chumbo, níquel e zinco, e seu potencial como ferramenta para a redução da concentração de metais na água de efluentes
• Beneficiário: Irineu Bianchini Júnior
• Modalidade de apoio: Auxílio à Pesquisa - Regular