Gas absorption through membranes
The absorption of air carbon dioxide into alkaline absorbents through membranes is described. A simple model is presented to describe the mass transfer through the membrane and into the absorption solution. It appears that membrane resistance represents about 30% of overall mass transfer limitations. Sandwich PFFE/carbon membranes were optimised with respect to a minimum mass transfer resistance and a maximum gas/liquid contact surface. Mass transfer characteristics were measured experimentally and were proved to be twice better than literature data for hollow fibre membranes. The flat membranes can be built together in absorption modules based on ELENCO technology for fuel cell stacks.
Bibliographic Reference: Paper presented: International Symposium on Gas Separation Technology, Anvers (BE), Sept. 1989
Availability: Available from (1) as Paper EN 34820 ORA
Record Number: 199010053 / Last updated on: 1994-12-01
Original language: en
Available languages: en