(784d) Composite Hollow Fiber Membranes for Post Combustion CO2 Capture

Composite
Hollow Fiber Membranes for Post Combustion CO₂ Capture

Ali
A. Rownaghi¹, William J. Koros¹,
Dhaval Bhandari²

¹School of
Chemical and Biomolecular Engineering, 311 Ferst Dr. NW, Atlanta, GA 30332

²GE Global
Research Center, 1 Research Cir, Niskayuna, NY 12309

Fabrication of
composite hollow fiber membranes with a thin polymeric permselective layer coated
on a highly porous substrate for gas separation applications is attractive to
provide both high flux and selectivity. The selective layer and the highly
porous substrate described in this work are made from a combination of
organic/inorganic materials. High porosity polyamide-imide (PAI) hollow fiber
substrates were fabricated and characterized by scanning electron microscopy. The
porous substrates were then coated with poly[bis-(2-(2-methoxy)
ethoxy)ethoxyphosphazene] (MEEP) to create a permselective skin layer. The
fabricated membrane performance was verified by permeation tests with He, N₂
and CO₂ at 35 °C and 30 psi. The membranes were found to have CO₂/N₂
selectivity up to 37. The increase in CO₂/N₂ selectivity
for some membranes was accompanied by an increase in CO₂ permeance. 

Acknowledgment

The
material described in the abstract is based upon work supported by the Department
of Energy National energy Technology Laboratory (DOE-NETL) under award number
DE-FE0007514.

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