Transport properties of gases through integrally skinned asymmetric composite membranes prepared from date pit powder and polysulfone |
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Authors: | Jimoh K. Adewole |
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Affiliation: | College of Petroleum Engineering & Geosciences, Center for Integrative Petroleum Research, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia |
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Abstract: | Studies were conducted on transport properties and separation performance of date pit/polysulfone composite membranes for CO2, CH4, N2, He, and H2 gases. Date seeds were obtained and processed into powder. Asymmetric flat sheet membrane was prepared by solvent casting method with 2–10 wt % date pit powder. Membrane characterization was done using high pressure gas permeation, X‐ray diffraction, thermogravimetric, and scanning electron microscope analyses. The separation performance and the plasticization resistance property were evaluated in terms of gas permeability, selectivity, and plasticization pressure, respectively. Time dependent performance properties were evaluated up to a pressure of 40 bar for 75 days. Results obtained showed the highest selectivity values of 1.54 (He/H2), 3.637 (He/N2), 2.538 (He/CO2), 2.779 (He/CH4), 3.179 (H2/N2), 3.907 (H2/CO2), 1.519 (CH4/N2), 1.650 (CO2/N2), and 1.261 (CO2/CH4) at 10 bar and 35 °C feed pressure and temperature, respectively. The resulting composite membrane showed about 39.50 and 66.94% increase in the selectivity of He/N2 and CO2/CH4, respectively, as compared to the pure polysulfone membrane. Thus, the membrane composites possess some potentials in membrane gas separation. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016 , 133, 43606. |
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Keywords: | biodegradable biopolymers and renewable polymers cellulose and other wood products composites membranes |
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