Experimental investigation of a molecular gate membrane for separation of carbon dioxide from flue gas
- RITE, Kyoto, Japan
Commercial-sized modules of the PAMAM dendrimer composite membrane with high CO2/N2 selectivity and CO2 permeance were developed according to the In-situ Modification (IM) method. This method utilizes the interfacial precipitation of membrane materials on the surface of porous, commercially available polysulfone (PSF) ultrafiltration hollow fiber membrane substrates. A thin layer of amphiphilic chitosan, which has a potential affinity for both hydrophobic PSF substrates and hydrophilic PAMAM dendrimers, was employed as a gutter layer directly beneath the inner surface of the substrate by the IM method. PAMAM dendrimers were then impregnated into the chitosan gutter layer to form a hybrid active layer for CO2 separation. Permeation experiments of the PAMAM dendrimer composite membrane were carried out using a humidified mixed CO2 / N2 feed gas at a pressure difference up to 97 kPa at ambient temperature. When conducted with CO2 (5%) / N2 (95%) feed gas at a pressure difference of 97 kPa, the PAMAM composite membrane exhibited an excellent CO2/N2 selectivity of 150 and a CO2 permeance of 1.7×10-7 m3(STP) m-2 s-1 kPa-1. The impact of various process parameters on the permeability and selectivity was also examined.
- Research Organization:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR; Research Institute of Innovative Technology (RITE) for the Earth, Kyoto, Japan
- Sponsoring Organization:
- USDOE - Office of Fossil Energy (FE); Ministry of Economy, Trade and Industry, Japan
- DOE Contract Number:
- Not cited
- OSTI ID:
- 938556
- Report Number(s):
- DOE/NETL-IR-2006-153; NETL-TPR-1450; TRN: US200820%%165
- Resource Relation:
- Conference: 23rd Annual International Pittsburgh Coal Conference, Pittsburgh, PA, Sept. 25-28, 2006
- Country of Publication:
- United States
- Language:
- English
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