Abstract: In one aspect, methods are described herein for the removal of CO2 from flue gas or exhaust gas streams generated from point sources including, but not limited to, electric generation facilities, concrete production facilities, chemical and food processing facilities. A method, in some embodiments, a method comprises an adsorption cycle for removing at least 70 percent of CO2 from an exhaust gas stream. The adsorption cycle includes flowing an exhaust gas stream through at least one adsorber bed formed of monolithic structural adsorbers, the monolithic structural adsorbers comprising an outer peripheral wall and a plurality of inner partition walls supporting an organic compound or inorganic compound adsorbing CO2 from the exhaust gas stream.

Abstract: In one aspect, monolithic structural gas treatment bodies are described herein comprising a unique hierarchical pore structure and thin-walled honeycomb architecture in conjunction with high open area and sufficient size and mechanical strength for commercial and industrial applications, including carbon capture applications. As described further herein, the monolithic structural gas treatment body can exhibit a honeycomb structure wherein inner partition walls define longitudinal flow channels through the monolithic body.