Preparation of Hollow Fibre Membranes for Gas Separation by the Phase Inversion Process: Influence of the Shear Rate on Separation Properties

Authors

  • R. Válek MemBrain s.r.o., Stráž pod Ralskem
  • D. Malý MemBrain s.r.o., Stráž pod Ralskem
  • J. Peter MemBrain s.r.o., Stráž pod Ralskem | Institute of Macromolecular Chemistry, Academy of the Sciences of the Czech Republic, Prague
  • J. Ullsperger Department of Inorganic Technology, University of Chemistry and Technology Prague, Prague

Keywords:

gas separation, polymeric membrane, hollow fibre, phase inversion

Abstract

Gas membrane separation (GMS) is one of the important technologies used in the chemical industry. The most significant advantages of GMS technologies include speed, efficiency and absence of phase transitions. This results in a relatively low energy consumption, which is a very important economic and environmental parameter. Hollow fibre membranes were prepared from the poly­etherimide ULTEM 1000 solution in an aprotic solvent, N-methylpyrrolidone, by the phase inversion process. The influence of the shear rate of the polymer solution in the spinneret on gas transport and separation properties of the membrane was investigated. A mathematical model of the shear rate and linear velocity in the spinneret for small and high polymer solution flow was designed. Due to the potential application of these membranes for biogas upgrading, membranes were tested for CO2/CH4 mixture (1:1). Results clearly show that membranes prepared at higher shear rate (1400 s–1) exhibited higher selectivities (80 at 8 bar and 25 °C) for CO2/CH4 mixture and are more suitable for biogas separation.

Published

2018-04-15

How to Cite

Válek, R., Malý, D., Peter, J., & Ullsperger, J. (2018). Preparation of Hollow Fibre Membranes for Gas Separation by the Phase Inversion Process: Influence of the Shear Rate on Separation Properties. Chemické Listy, 112(4), 237–241. Retrieved from http://ww.w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/3067

Issue

Section

Articles