Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/1241
Title: The elution of metal cyanocomplexes from polyacrylic - and polystyrene-based ion exchange resins using nitrate and thiocyanate eluants.
Authors: Riani, Josiane Costa
Leão, Versiane Albis
Silva, Carlos Antônio da
Silva, Adarlêne Moreira
Bertolino, Sueli Moura
Luckey, G. C.
Keywords: Nitrate
Elution
Gold extraction
Cyanide recycling
Ion exchange resins
Issue Date: 2007
Citation: RIANI, J. C. et al. The elution of metal cyanocomplexes from polyacrylic - and polystyrene- based ion exchange resins using nitrate and thiocyanate eluants. Brazilian Journal of Chemical Engineering, v. 24, n.3, p.421-431, jul-set. 2007. Disponível em: <http://www.scielo.br/pdf/bjce/v24n3/a11v24n3.pdf>. Acesso em: 03 ago. 2012.
Abstract: Ion exchange resins can potentially be applied in cyanide recycling to address growing environmental concerns over the use of cyanide during gold extraction. In the present work the elution of copper-, iron-, and zinc-cyanocomplexes from polyacrylic- and polystyrene-based resins was studied. It was found that iron and copper cyanides are easily eluted from polyacrylic- and polystyrene-based ion exchange resins using either SCN- or NO3-. However, elution of the zinc cyanide complex from polystyrene-based resins was poor when using nitrate solution as eluant. Besides, an increase in elution temperature from 25 °C to 50 °C improved the elution of iron and zinc cyanides from polystyrene-based resins using a nitrate eluant; however temperature did not have any significant effect on other metal cyanocomplexes or for elution using thiocyanate. It was therefore proposed that the optimal combination of resin-eluant was site-specific, and depends on the features of the effluent, processing temperature, eluant concentration, and ion exchange resin under consideration.
URI: http://www.repositorio.ufop.br/handle/123456789/1241
ISSN: 01046632
metadata.dc.rights.license: Todo o conteúdo do periódico Brazilian Journal of Chemical Engineering, exceto onde identificado, está licenciado sob uma licença Creative Commons que permite copiar, distribuir e transmitir o trabalho em qualquer suporte ou formato desde que sejam citados o autor e o licenciante. Fonte: <http://www.scielo.br/scielo.php?script=sci_serial&pid=0104-6632&lng=en&nrm=iso>. Acesso em: 21 out. 2015
Appears in Collections:DEMET - Artigos publicados em periódicos

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