Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/28499
Título : Use of ethylenediaminetetraacetic acid as a scavenger for chromium from “wet blue” leather waste: thermodynamic and kinetics parameters
Autor: Resende, José E.
Gonçalves, Mateus A.
Oliveira, Luiz C. A.
Cunha, Elaine F. F. da
Ramalho, Teodorico C.
Palavras-chave: Chromium contamination
Density functional theory
Solid waste - Toxic effects
Contaminação por cromo
Teoria da densidade funcional
Resíduos sólidos - Efeitos tóxicos
Publicador: Hindawi Publishing Corporation
Data da publicação: 2014
Referência: RESENDE, J. E. et al. Use of ethylenediaminetetraacetic acid as a scavenger for chromium from “wet blue” leather waste: thermodynamic and kinetics parameters. Journal of Chemistry, [S. l.], v. 2014, p. 1-8, 2014. doi: http://dx.doi.org/10.1155/2014/754526.
Abstract: One serious consequence of the current consumer society is the transformation of the environment into a waste receptacle arising from human activities. Because of the potential toxic effects of chromium solid waste containing this metal there are grounds for serious concern for the tanning and leather processing industry. The application of tannery waste as organic fertilizer has led to extensive contamination by chromium in agricultural areas and may cause the accumulation of this metal in soils and plants. This work evaluated the extraction of Cr+3 and Cr+6 contained in solid waste from the leather industry through density functional theory (DFT) calculations. The Gibbs free energy calculations reveal that the chelator ethylenediaminetetraacetic acid (EDTA) forms more stable complexes with metal ions of chromium compared with the structures of the complexes [Cr(NTA)(H2O)2] and [Cr-collagen], the latter used to simulate the protein bound chrome leather.
URI: http://repositorio.ufla.br/jspui/handle/1/28499
Idioma: en_US
Aparece nas coleções:DQI - Artigos publicados em periódicos



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