Data/hora: 01/06/2024 01:07:37

Provedor de dados: | 42
País: | Brazil
Título: | A Dual-mode model interpretation of CO2/CH4 permeability in polysulfone membranes at low pressures
Autores: | BIONDO,LUCAS D.; DUARTE,JOCELEI; ZENI,MARA; GODINHO,MARCELO.
Data: | 2018-04-01
Ano: | 2018
Palavras-chave: | Asymmetric membranes; CO2/CH4 permeability; Dual-mode model; Polysulfone.
Resumo: | 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
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401855
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/0001-3765201820170221
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.90 n.2 2018
Fonte: | info:eu-repo/semantics/openAccess