Thermally Stable Moisture Responsive Chitosan based Mixed Matrix Membranes for Selective CO2 Separation

Abstract

CO2 is the major component of greenhouse gases and is responsible for the surge in global temperature. Therefore, carbon capture, utilization, and sequestration (CCS) are the need of the hour to control global warming. Chitosan (CS) polymeric membranes containing amine carriers have received much attention in CO2 separation because of their easy fabrication, low cost, and excellent separation performance. The optimum performance of CO2/N2 was observed at 85 °C temperature, 2.21 bar feed pressure, and 1.21 bar sweep pressure, with feed and sweep moisture flow of 0.03 mL/min and 0.05 mL/min, respectively. Neat CS membrane with ~0.6 μm active layer thickness showed CO2 separation results with CO2 permeance of 60 GPU and CO2/N2