SciELO - Scientific Electronic Library Online

 
vol.59 número2DETERMINATION AND CO-ESTIMATE OF THE CHLORMADINONE ACETATE AND 17α-ETHINYL ESTRADIOL IN PHARMACEUTICAL FORMULATION AND DRINKING WATER SAMPLES BY DIGITAL DERIVATIVE SPECTOPHOTOMETRYELECTROOXIDATION OF DNA AT GLASSY CARBON ELECTRODES MODIFIED WITH MULTI-WALLED CARBON NANOTUBES WITH DIFFERENT OXIDATION DEGREE índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

  • Em processo de indexaçãoCitado por Google
  • Não possue artigos similaresSimilares em SciELO
  • Em processo de indexaçãoSimilares em Google

Compartilhar


Journal of the Chilean Chemical Society

versão On-line ISSN 0717-9707

Resumo

CIFUENTES, GERARDO; BUSTOS, PABLO; HERNANDEZ, JOSÉ  e  GUAJARDO, NICOLÁS. ZINC ELECTROWINNING USING REACTIVE ELECTRODIALYSIS (RED). J. Chil. Chem. Soc. [online]. 2014, vol.59, n.2, pp.2490-2493. ISSN 0717-9707.  http://dx.doi.org/10.4067/S0717-97072014000200020.

This paper presents an alternative process for the conventional zinc electrowinning, which consists of a cell of two compartments separated by a anion exchange membrane. One of them contains a zinc sulphate catholyte and sulfuric acid while the anolyte solution contains ferrous sulfate and sulfuric acid. By using a membrane the classical lead anode may be replaced, as well as the main oxidation reaction of water, for that of the ferrous ion to ferric ion. This leads to significant savings in specific energy consumption of the overall process and eliminates the classic problem of acid mist in electrowinning cells. The results show that the proposed process consumes 30% less cell potential compared to conventional electrowinning cell.

Palavras-chave : zinc; electro-winning; reactive electrodialysis.

        · texto em Inglês     · Inglês ( pdf )