Evaluation of NaX and NaY packed beds for chromium uptake from multicomponent solution

Autores

  • Maria Angélica Simões Dornellas de Barros Universidade Estadual de Maringá Autor
  • Andreia Soares Zola Universidade Estadual de Maringá Autor
  • Indianara Conceição Ostroski Universidade Federal de Goiás Autor
  • Pedro Augusto Arroyo Universidade Estadual de Maringá Autor
  • Célia Regina Granhen Tavares Universidade Estadual de Maringá Autor
  • Eduardo Falabella Sousa-Aguiar Universidade Federal do Rio de Janeiro Autor

DOI:

https://doi.org/10.4025/actascitechnol.v36i2.18124

Palavras-chave:

zeolite, breakthrough, multicomponent, ion exchange

Resumo

In this paper the removal of chromium from Cr/Ca/Mg/K and Cr/Ca/Mg/K/Na solutions was investigated in NaX and NaY packed beds. The breakthrough curves presented some overshooting phenomena where chromium ions displaced the previous exchanged cations. Length of unused bed, overall mass transfer coefficient, operational ratio and dimensionless variance were obtained. According to such mass transfer parameters it was concluded that the chromium uptake is influenced by the competition and interaction of the entering ions. Such influences were verified through some differences in the dynamic selectivity obtained for each system. NaY seemed to have a higher affinity towards Cr3+ and its sites were more efficiently used in the ion exchange process.

 

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Publicado

2014-04-04

Edição

Seção

Engenharia Quí­mica

Como Citar

Evaluation of NaX and NaY packed beds for chromium uptake from multicomponent solution. (2014). Acta Scientiarum. Technology, 36(2), 279-286. https://doi.org/10.4025/actascitechnol.v36i2.18124

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