FACILITATED TRANSPORT OF CR(VI) THROUGH A SUPPORTED LIQUID MEMBRANE WITH TRIOCTYLMETHYLAMMONIUM CHLORIDE AS A CARRIER

Abstract

This paper has applied a simple model (H₂CrO₄ + Aliquat 336 ↔ complex) to the mass transfer mechanism of Cr(VI) with Aliquat 336 in a batch-type, supported liquid membrane module. Concentrations at pH 3 are as follows: 0.019 kmol/m³ ≤ Aliquat 336 ≤ 0.035 kmol/m³ and 20 g/m³ ≤ Cr (VI) ≤ 500 g/m³. The measured values of forward- and backward-reaction rate constants between Cr(VI) and Aliquat 336 were used to simulate the model with the mass conservation equation and associated boundary conditions. Comparison between the experimental and simulated facilitated factors of Cr(VI) transport led to classification of reaction regions.

Keywords:

• Facilitated transport
• Immobilized liquid membrane
• Cr(VI)
• Trioctylmethylammonium chloride
• Mass transfer coefficient

ACKNOWLEDGMENTS

This study was supported by the research Fund of Pusan National University.