The regeneration viability evaluation of NaY zeolite columns

Authors

  • Juliana Belincanta UEM
  • Onélia Aparecida Andreo dos Santos UEM
  • Eduardo Falabella Sousa-Aguiar UEM
  • Pedro Augusto Arroyo UEM
  • Maria Angélica Simões Dornellas de Barros UEM

DOI:

https://doi.org/10.4025/actascitechnol.v24i0.2497

Keywords:

troca iônica dinâmica, regeneração, cromo, zeólita NaY, tratamento de efluentes

Abstract

This paper investigated the regeneration viability of NaY Zeolite columns previously exchanged with trivalent chromium ions. The direct exchanges were carried out with 15 ppm solution and the reverse ones were carried out with 3 distinct NaCl solutions: 0.1 mol/L; 1.0 mol/L and 2.0 mol/L. All the runs were done in a flow rate of 9 mL/min with an average particle size of 0.180 mm. Five exchange/regeneration cycles were studied to reach the aim of this research. It was observed that NaY zeolite had a close affinity for trivalent ions which makes the regeneration process difficult and promotes a progressive accumulation of chromium in the fixed bed. Only at 2.0 mol/L all chromium ions retained were released in short operation time, which indicated that the concentration extended the lifetime of the columns.

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Author Biography

Maria Angélica Simões Dornellas de Barros, UEM

Possui graduação em Engenharia Quí­mica pela Universidade Estadual de Maringá (1992) , mestrado em Engenharia Quí­mica pela Universidade Estadual de Maringá (1996) e doutorado em Programa de Pós Graduação Em Engenharia Quí­mica pela Universidade Estadual de Maringá (2003) . Atualmente é Professor adjunto A da Universidade Estadual de Maringá. Tem experiência na área de Engenharia Quí­mica , com ênfase em Tecnologia Quí­mica. Atuando principalmente nos seguintes temas: cromo, troca iônica, Isotermas, leito fixo, Efluentes e curtume Currí­culo Lattes

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Published

2008-04-22

How to Cite

Belincanta, J., Santos, O. A. A. dos, Sousa-Aguiar, E. F., Arroyo, P. A., & Barros, M. A. S. D. de. (2008). The regeneration viability evaluation of NaY zeolite columns. Acta Scientiarum. Technology, 24, 1673–1679. https://doi.org/10.4025/actascitechnol.v24i0.2497

Issue

Vol. 24 (2002)

Section

Chemical Engineering

License

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