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A Dual-mode model interpretation of CO2/CH4 permeability in polysulfone membranes at low pressures Anais da ABC (AABC)
BIONDO,LUCAS D.; DUARTE,JOCELEI; ZENI,MARA; GODINHO,MARCELO.
ABSTRACT An asymmetric membrane of polysulfone (PSf) was synthesized by phase inversion method. Permeation experiments were carried out between 2 to 5 bar pressure, and at temperatures 20 to 45°C. The dense-selective layer of PSf membrane presents regular thickness (about 5 µm), and was not possible to observe the formation of macrovoids in porous layer. The CO2 permeability through membrane was 18.8 Barrer at 35°C and 2 bar pressure, and this relationship between the pressure and the CO2 permeability was described adequately by Dual-mode model. The absence of CH4 permeability at 2 and 3 bar pressure, qualifies the PSf membrane for gases separation with high selectivity in this range.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Asymmetric membranes; CO2/CH4 permeability; Dual-mode model; Polysulfone.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401855
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