Biogas upgrading to natural gas pipeline quality using pressure swing adsorption for CO2 separation over UiO-66: Experimental and dynamic modelling assessment

Green synthesis of polypyrrole for CO2 capture from humid flue gases

“…When the dynamic adsorption capacity was measured, some adsorption sites of the adsorbent could not be saturated with the continuously flowing adsorbate gas, where the static adsorption represents the saturated adsorption capacity, thus the dynamic adsorption capacity was lower than the static adsorption capacity. 75,76…”

“…When the dynamic adsorption capacity was measured, some adsorption sites of the adsorbent could not be saturated with the continuously flowing adsorbate gas, where the static adsorption represents the saturated adsorption capacity, thus the dynamic adsorption capacity was lower than the static adsorption capacity. 75,76 A major challenge in current post-combustion CO 2 capture is that power plant flue gases are highly humid and require additional water removal prior to adsorption. 77 In general, adsorbents preferentially adsorb water molecules due to their strong polarity, which then occupy the effective CO 2 adsorption sites.…”

Emerging porous materials for carbon dioxide adsorptive capture: progress and challenges

“…[135][136][137] Besides these commercial adsorbents, advanced porous materials such as MOFs for PSA units are still in the lab-scale study stage. Recently, Idris et al 138 took UiO-66 as a CO 2 adsorbent, which is a well-known member of the MOF family with high chemical and thermal stability, to upgrade biogas through a 2-bed PSA unit. The results confirmed that the PSA process was applicable for biogas separation with biogas purity of 98.2% and recovery of 94.68%.…”

Enhanced Anaerobic Digestion Effluent Treatment by an Electrochemical Membrane Bioreactor: Synergistic Roles of Forward Osmosis and Microbial Electrosynthesis

“…Currently, various technologies for D-CH 4 recovery or removal from AD effluents have been reported, including pressure swing adsorption, water scrubbing, and membrane contactor . However, complicated operational conditions, high energy consumption, and frequent cleaning are the major concerns for the application of these techniques. , Fortunately, our previous studies found that most of the D-CH 4 in AD effluents can be rejected by commercial forward osmosis (FO) membranes. , Therefore, the anaerobic membrane bioreactor (AnMBR) using an FO membrane instead of a microfiltration or ultrafiltration membrane can solve the problem of D-CH 4 loss without any extra process, thereby improving the ability of energy recovery from AD effluents.…”