Estudo da remoção do íon Fe (II) em colunas de leito fixo, utilizando-se a Zeólita NaY
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Data
2011
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Resumo
This work investigated
the removal of iron ions in fixed bed columns by NaY zeolite at 30°C and pH= 4.5. The
experimental breakthrough curves were obtained for feed concentrations from 0.2 to 2.94
meq L-1 and a flow rate of 8 mL min.-1. Through the breakthrough curves it was possible to
evaluate isotherm behavior and o obtain the maximum removal capacity of 2.61 meq g-1.
Langmuir and Freundlich isotherm models were used to represent the column equilibrium
data. A phenomenological model was used to represent the breakthrough curves. The
mathematical model was obtained by means of mass-balance equations applied to an
element of the column in the liquid phase and solid phase. The overall mass-transfer
coefficient was estimated using the experimental data of the breakthrough curves. The
mathematical model properly represented the ion exchange of iron ions in fixed bed
column.
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Troca iônica, Dados de equilíbrio, Modelo matemático, Ion exchange, Equilibrium data, Mathematical model
Citação
OSTROSKI, Indianara Conceição et al. Estudo da remoção do íon Fe (II) em colunas de leito fixo, utilizando-se a Zeólita NaY. Acta Scientiarum. Technology, Maringá, v. 33, n. 3, p. 305-312, 2011.