A two-dimensional model of the coupled transfer processes for a supercapacitive swing adsorption module

A two-dimensional model of coupled transfer processes is developed for a supercapacitive swing adsorption module, encompassing both the adsorption layer and parallel plate electrochemical supercapacitor. The separation process involves heat and mass transfer in combination with adsorption and desorption under the influence of an external electric field (charge transfer). The simulation results suggest the potential for intensifying gas mixture separation by adsorption under an external electric field. The periodic variation in the electric potential causes a periodic variation in the adsorbed component concentration, gas phase component concentration, temperature, velocity, and pressure, together with the coupled momentum, mass, and charge transfer in the porous adsorption layer (carbon cloth) under the external electric field during the capacitor's charging and discharging. The main conclusion is that a new gas separation process, defined as an electric field swing adsorption process, is feasible by combining adsorption and charge transfer.