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Estimation of Interfacial Forces Governing the Reverse-Osmosis System: Nonionized Polar Organic Solute—Water—Cellulose Acetate Membrane

1981; American Chemical Society; Linguagem: Inglês

10.1021/bk-1981-0154.ch019

1947-5918

Takeshi Matsuura, Yutaka Taketani, S. Sourirajan,

Membrane Separation and Gas Transport

This extends the previous work (1) in which the Lennard-Jones type surface potential function and the frictional function representing the interfacial forces working on the solute molecule from the membrane pore wall were combined with solute and solvent transport through a pore to calculate data on membrane performance such as those on solute separation and the ratio of product rate to pure water permeation rate in reverse osmosis. In the previous work (1) parameters involved in the Lennard-Jones type and frictional functions were determined by a trial and error method so that the solutions in terms of solute separation and (product rate/pure water permeation rate) ratio fit the experimental data. In this paper the potential function is generated by using the experimental high performance liquid chromatography (HPLC) data in which the retention time represents the adsorption and desorption equilibrium of the solute at the solvent-polymer interface. The frictional force is