Breakthrough analysis on selective adsorption of CO2 from biogas by polyethylenimine-impregnated resins

Polymer resin-based solid amine are prospective adsorbents used in removing CO2 from biogas. Two commercial resins with different porous structures, AB-8 and ADS-17, were selected as supports to explore the influence of the support structures on adsorbent performance. It was discovered that macroporous channels greatly boost CO2 adsorption at higher PEI loadings (≥ 30