Removal of hydrogen sulfide from methane using commercial polyphenylene oxide and Cardo-type polyimide hollow fiber membranes |
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Authors: | Mahdi Pourafshari Chenar Houman Savoji Mohammad Soltanieh Takeshi Matsuura Shahram Tabe |
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Affiliation: | 1.Chemical Engineering Department,Ferdowsi University of Mashhad,Mashhad,I. R. Iran;2.Department of Chemical and Petroleum Engineering,Sharif University of Technology,Tehran,I. R. Iran |
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Abstract: | The performance of commercially available poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) and Cardotype polyimide (PI) hollow
fiber membranes was investigated in removing hydrogen sulfide from methane in a series of bench-scale experiments. It was
observed that in the concentration range of hydrogen sulfide in methane from 101 to 401 ppm, the methane permeability decreased
in the presence of hydrogen sulfide for Cardo-type polyimide hollow fiber membranes, whereas the PPO membrane performance
was not affected. The separation coefficients of hydrogen sulfide/methane were 6 and 4 for PI and PPO membranes, respectively.
Effects of temperature on the performance of PI and PPO membranes were investigated. It was observed that the permeabilities
of both components of the mixture increased by increasing temperature, whereas the selectivities remained constant. |
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