Accession Number:

AD0263172

Title:

PURIFICATION OF ORGANIC COMPOUNDS BY MEMBRANE PERMEATION

Descriptive Note:

Corporate Author:

IONICS INC CAMBRIDGE MASS

Personal Author(s):

Report Date:

1961-09-15

Pagination or Media Count:

1.0

Abstract:

Liquid-phase membrane permeation is being studied for use in separating organic mixtures. The investigation will attempt to correlate the effects of operating variables and film composition upon the permeability of molecules of different sizes, shapes, and chemical nature and also to determine the factors most effecting selectivity of films. Thin plastic or polymeric films will be used for the membrane. The removal of the charges which permeates will be effected by reducing the pressure, thus evaporating the material. Vapor phase chromotography is being used for analysis. The following permeation tests were performed successfully acetone-heptane mixture with cellulose triacetate heptane-cyclohexane mixture with polyethylene and n-pentane-n-heptane mixture with polyethylene. Polypropylene was used successfully also. Polystrene, Aclar, Mylar, and Saran were unsatisfactory for permeation of a 50-50 pentaneheptane mixture. A review of the literature is also included.

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE