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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 |
Aparece nas coleções: | Artigos |
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artigo.pdf | texto completo | 511,79 kB | Adobe PDF | Visualizar/Abrir |
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