Microwave heating-synthesized zeolite membrane for CO2/CH4 separation

作者：Chew Thiam Leng^*; Ahmad Abdul Latif; Bhatia Subhash

来源：Desalination and Water Treatment, 2012, 47(1-3): 139-149.

DOI：10.1080/19443994.2012.696796

• Ba-SAPO-34
• Membrane
• Microwave
• Carbon dioxide
• Gas separation

H-SAPO-34 membrane was synthesized using microwave heating at 200 degrees C for 2h. Ba-SAPO-34 membrane was obtained by ion-exchanging the H-SAPO-34 membrane with Ba2+ cation. The separation of CO2 from CO2/CH4 binary gas mixture was studied using design and analysis of experiments. The response surface methodology coupled with central composite design was used for modeling and analysis of the contribution of operating parameters (temperature, pressure difference across the membrane, CO2 concentration in the feed) to the responses (CO2 permeance and CO2/CH4 separation selectivity) during Ba-SAPO-34 membrane separation process. The process parameters were varied in the range of 30-180 degrees C of temperature, 100-500 kPa of pressure difference and 5-50% of CO2 concentration in the feed. The optimum condition for the process parameters was determined by setting the criteria so as to maximize the CO2 permeance and CO2/CH4 separation selectivity. The optimum CO2 permeance of 38.46 x 10(-7) mol/m(2)s Pa and CO2/CH4 separation selectivity of 250.00 were determined at the temperature of 32.68 degrees C, pressure difference of 101.19 kPa and 5.87% CO2 concentration in the feed.

• 出版日期2012-9