Permeation of gas mixtures in cellulose acetate membranes - practical approach to predict the permeation rate CO/sub 2//CH/sub 4/ mixture

Conference · Sat Oct 01 04:00:00 EDT 1988 · Sep. Sci. Technol.; (United States)

OSTI ID:6256103

Fouda, A E; Matsuura, T; Lui, A

Dry cellulose acetate reverse osmosis membranes of different porosities are prepared by using the solvent exchange method and then shrunk at various temperatures. Permeation of single gases and gas mixtures of CO/sub 2/ and CH/sub 4/ through these membranes were investigated at various upstream pressures up to 2.4 MPa. The permeation data of a reference gas usually helium was used to characterize the membrane and determine the flow parameters which can be used to predict the performance of that membrane in separating gas mixtures. The Surface Force - Pore Flow model developed in previous investigations can be used to predict the membrane performance using the above method. The prediction using the characterization parameters of the reference gas proved to be unsatisfactory in most cases, since the surface force is highly dependent on the interaction between the specific gas component in the mixture and the membrane.

• Research Organization: National Research Council of Canada, Ottawa
• OSTI ID: 6256103
• Report Number(s): CONF-871038-
• Conference Information: Journal Name: Sep. Sci. Technol.; (United States) Journal Volume: 23:12,13
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACETATES
ALKANES
CARBOHYDRATES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBOXYLIC ACID SALTS
CELLULOSE
CHALCOGENIDES
DATA
DIFFUSION
DISPERSIONS
EQUATIONS
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROCARBONS
INFORMATION
MATHEMATICAL MODELS
MEDIUM PRESSURE
MEMBRANES
METHANE
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
OSMOSIS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PERMEABILITY
POLYSACCHARIDES
POROSITY
PREDICTION EQUATIONS
SACCHARIDES