Carbon dioxide in natural gas

Gas composition effects can be significant. The concenuation of carbon dioxide in natural gas, for example, can affect its rate of permeation (per unit of partial pressure differential). Data provided by Hogsett and Mazur (1983) indicate that increasing the CO2 concentration from IS to 50% in 200 psia natural gas increases the CO2 permeation rate from about 4.0 to 5.0 (scf)/(ft )(hrK100 psi) with GASEP membranes. 

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