Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/16881
Tipo: Artigo
Título: Preparation and evaluation of magnetic chitosan particles modified with ethylenediamine and Fe(III) for the removal of Cr(VI) from aqueous solutions
Autor(es): Toledo, Thiago V.
Bellato, Carlos R.
Souza, Carlos H. Ferreira de
Domingues, Junielly T.
Silva, Danilo de C.
Reis, César
Fontes, Maurício P. Ferreira
Abstract: The adsorption of Cr(VI) in aqueous solution by magnetic particles of crosslinked chitosan-ethylenediamine-Fe(III) (MPCh-EDA-FeCL) was studied in a batch system. Fe3+ in the MPCh-EDA-FeCL permitted that adsorption of Cr(VI) occurred with maximum efficiency between pH 3 and 11. The maximum adsorption capacity at pH 7.0 was 81.04 mg g-1 at 25 ºC. The adsorption kinetic process was described by the pseudo-second-order model. Thermodynamic parameters indicated spontaneous, exothermic and chemical adsorption nature. The adsorbent was successively regenerated using a 0.1 mol L-1 NaOH solution. Results were satisfactory for treatment of wastewater from the electroplating industry.
Palavras-chave: Magnetic chitosan
Adsorption
Chromium(VI)
Editor: Química Nova
Tipo de Acesso: Open Access
URI: http://dx.doi.org/10.5935/0100-4042.20140245
http://www.locus.ufv.br/handle/123456789/16881
Data do documento: 5-Set-2014
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