Premium
Polyurethane/polyethersulfone dual‐layer anisotropic membranes for CO 2 removal from flue gas
Author(s) -
García Jiménez Christian David,
Habert Alberto Cláudio,
Borges Cristiano Piacsek
Publication year - 2021
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.50476
Subject(s) - barrer , membrane , selectivity , chemical engineering , flue gas , permeability (electromagnetism) , materials science , chemistry , organic chemistry , catalysis , biochemistry , engineering
Removing CO 2 from flue gas streams has been a permanent challenge regarding environmental issues. Membrane technology is a solution for this problem but more efficient membranes are required. The fabrication of dual‐layer polyurethane/polyethersulfone membrane by the co‐casting technique is undertaken and the effects of previous evaporation time and coagulation water bath temperature on membrane morphology are explored. Uniform layers with excellent adhesion are obtained. The effect of feed pressure and temperature on membrane permeability and selectivity for CO 2 , N 2 , and O 2 are studied. Increasing the pressure from 1 to 8 bar results in a reduction of CO 2 permeability and CO 2 /N 2 ideal selectivity from 19.6 to 13.0 barrer, and from 66 to 60, respectively. Temperature in the range of 25–45°C enhances CO 2 permeability from 19.6 to 28.9 barrer, although CO 2 /N 2 selectivity decreases from 66 to 43, yet showing good potential for applications.