Permeation of Mixtures of Four Phenols through a Supported Liquid Membrane in NaCl 1.0 mol·dm⁻³ Medium

Abstract

The permeation of four phenols (phenol, 2-chlorophenol, 2-nitrophenol, and 2,4-dichlorophenol) through a supported liquid membrane has been studied in NaCl 1.0 mol·dm⁻³medium. The flux of each phenol was determined by measuring in real time the change of their concentration in the strip phase by making use of a fiber optic spectrophotometer and a multivariate calibration. The model for the permeation of phenol alone was first developed by making permeation experiments of a phenol, and then permeation studies of the mixture were carried out and the model was extended to those phenols. It was found that the permeation of a phenol is interfered with by the presence of other phenols.

Keywords:

• Phenols
• Permeation
• Liquid membranes
• NaCl
• Model

ACKNOWLEDGMENTS

The authors thank Dr. Jürgen Schneider (Hoechst Aktiengesellschaft, Wiesbaden) for kindly supplying the Celgard 2500 films. Gorka Arana is grateful for the scholarship granted to him by The Basque Government. This work was financially supported by UPV-EHU through Project UPV 171.310-EA144/93.