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Enhancing concentration of oxygen by polysulfone membrane for environmental applications

Phu Quoc Phan 1, *
Ha Thi Thai La 1
  1. University of Technology, VNU–HCM
Correspondence to: Phu Quoc Phan, University of Technology, VNU–HCM. Email: pvphuc@vnuhcm.edu.vn.
Volume & Issue: Vol. 17 No. 2 (2014) | Page No.: 25-32 | DOI: 10.32508/stdj.v17i2.1299
Published: 2014-06-30

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Copyright The Author(s) 2023. This article is published with open access by Vietnam National University, Ho Chi Minh city, Vietnam. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. 

Abstract

For the purpose of using membranes from polysulfone (PSF) for oxygen enrichment, the membranes were prepared by dry/wet method. This method was involved in evaporation step in the air followed by an immersion into a water bath. Then a thin top layer of the asymmetric membrane was formed in the evaporation step. There are three experimental parameters that influce the formation of membrane including polymer concentration, evaporation time, and the ratio of tetrahydrofuran (THF)/N-methylpyrrolidone (NMP) were studied. From experiments, some results of polysulfone membrane formed by dry/wet method showed high selectivity coefficient of 1,53 at 0,1 MPa pressure with the flow of oxygen through the membrane of 0,310ml/s.

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