Advancements and challenges in electric heating for enhanced temperature swing adsorption processes

The electrification of the heating step in temperature swing adsorption processes has gained considerable attention, particularly in the realm of carbon capture. This review paper provides a comprehensive overview of the technological advancements in this field, encompassing both published research and patented innovations. Key technical details are explored, including the required properties for suitable adsorbents, various methodologies for transforming electrical energy into thermal energy (such as Joule, microwave, and induction heating), and the corresponding materials and instruments needed for each approach. Amongst these, Joule heating has emerged as the most mature technology, finding industrial application in volatile organic compound (VOC) removal. However, still there are several challenges to be addressed including uniform heating of adsorption beds, cycle development including rapid desorption and cooling, optimization of power-to-heat transformation efficiency, and performing technoeconomic and life-cycle analyses. Addressing these challenges will be crucial for the further development of electrified adsorption processes, particularly in carbon capture applications.