Distribution Equilibrium of Citric Acid between Aqueous Solutions and Tri-n-octylamine-Impregnated Macroporous Resins

Ruey Shin Juang; Hwai Luh Chang

doi:10.1021/ie00043a034

Distribution Equilibrium of Citric Acid between Aqueous Solutions and Tri-n-octylamine-Impregnated Macroporous Resins

Ruey Shin Juang^*, Hwai Luh Chang

^*Corresponding author for this work

Yuan Ze University

Research output: Contribution to journal › Journal Article › peer-review

26 Scopus citations

Abstract

In this paper, experiments were conducted on equilibrium distribution of citric acid between aqueous solutions and tri-n-octylamine (TOA)-impregnated resins in the 288–318 K temperature range. Analysis of the results showed that the sorption of citric acid could be explained by the formation of acid-TOA complexes in the resin phase with the general composition (H₃A)_p(TOA)_q. Mole fraction of the complexes formed in the resin phase as a function of citric acid concentration in the aqueous solution was obtained. The effect of temperature on equilibrium distribution was also studied, and the apparent thermodynamic data for sorption reactions were determined. Finally, the distribution of citric acid between aqueous solutions and the resins impregnating with a mixture of TOA and bis(2-ethylhexyl)phosphoric acid was examined.

Original language	English
Pages (from-to)	1294-1301
Number of pages	8
Journal	Industrial and Engineering Chemistry Research
Volume	34
Issue number	4
DOIs	https://doi.org/10.1021/ie00043a034
State	Published - 01 04 1995
Externally published	Yes

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title = "Distribution Equilibrium of Citric Acid between Aqueous Solutions and Tri-n-octylamine-Impregnated Macroporous Resins",

abstract = "In this paper, experiments were conducted on equilibrium distribution of citric acid between aqueous solutions and tri-n-octylamine (TOA)-impregnated resins in the 288–318 K temperature range. Analysis of the results showed that the sorption of citric acid could be explained by the formation of acid-TOA complexes in the resin phase with the general composition (H3A)p(TOA)q. Mole fraction of the complexes formed in the resin phase as a function of citric acid concentration in the aqueous solution was obtained. The effect of temperature on equilibrium distribution was also studied, and the apparent thermodynamic data for sorption reactions were determined. Finally, the distribution of citric acid between aqueous solutions and the resins impregnating with a mixture of TOA and bis(2-ethylhexyl)phosphoric acid was examined.",

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Y1 - 1995/4/1

N2 - In this paper, experiments were conducted on equilibrium distribution of citric acid between aqueous solutions and tri-n-octylamine (TOA)-impregnated resins in the 288–318 K temperature range. Analysis of the results showed that the sorption of citric acid could be explained by the formation of acid-TOA complexes in the resin phase with the general composition (H3A)p(TOA)q. Mole fraction of the complexes formed in the resin phase as a function of citric acid concentration in the aqueous solution was obtained. The effect of temperature on equilibrium distribution was also studied, and the apparent thermodynamic data for sorption reactions were determined. Finally, the distribution of citric acid between aqueous solutions and the resins impregnating with a mixture of TOA and bis(2-ethylhexyl)phosphoric acid was examined.

AB - In this paper, experiments were conducted on equilibrium distribution of citric acid between aqueous solutions and tri-n-octylamine (TOA)-impregnated resins in the 288–318 K temperature range. Analysis of the results showed that the sorption of citric acid could be explained by the formation of acid-TOA complexes in the resin phase with the general composition (H3A)p(TOA)q. Mole fraction of the complexes formed in the resin phase as a function of citric acid concentration in the aqueous solution was obtained. The effect of temperature on equilibrium distribution was also studied, and the apparent thermodynamic data for sorption reactions were determined. Finally, the distribution of citric acid between aqueous solutions and the resins impregnating with a mixture of TOA and bis(2-ethylhexyl)phosphoric acid was examined.

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Distribution Equilibrium of Citric Acid between Aqueous Solutions and Tri-n-octylamine-Impregnated Macroporous Resins

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