Accession Number : AD0656785

Title :   IMMOBILIZED LIQUID MEMBRANES FOR CONTINUOUS CARBON DIOXIDE REMOVAL.

Descriptive Note : Final rept. Jul 65-Jun 66,

Corporate Author : GENERAL ELECTRIC CO SCHENECTADY N Y RESEARCH AND DEVELOPMENT CENTER

Personal Author(s) : Ward,W. J. , III

Report Date : JUN 1967

Pagination or Media Count : 49

Abstract : The objective of the program was the development of an immobilized liquid membrane for CO2 removal from a manned spacecraft. During basic film research, water was found to be better than a polymeric material or any pure liquid for CO2/O2 separation. An immobilized film of water was available in the form of a porous cellulose acetate membrane. By impregnating this membrane with a concentrated solution of CsHCO3/Cs2CO3, and a catalyst for the hydrolysis of CO2, CO2 transport was facilitated and O2 transport was decreased to obtain a CO2/O2 separation factor and CO2 permeability of 4100 and 55, 796 x 10 to the -9th power. A mathematical analysis of CO2 transport was also carried out. It will now be possible to build a single-stage CO2 removal system with minimum power, weight, and size requirements. (Author)

Descriptors :   (*CONTROLLED ATMOSPHERES, PURIFICATION), (*CARBON DIOXIDE, REMOVAL), OXYGEN EQUIPMENT, SEPARATION, MEMBRANES, WATER, FILMS, POROUS MATERIALS, CELLULOSE ACETATES, OXYGEN, TRANSPORT PROPERTIES, CESIUM COMPOUNDS, CARBONATES, HYDROLYSIS, CATALYSTS, PERMEABILITY

Subject Categories : Industrial Chemistry and Chemical Processing
      Life Support Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE