Water management and heat integration in direct air capture systems

Tuning sorbent properties to reduce the cost of direct air capture

“…61,71 Heat integration techniques, such as mechanical vapor compression or moving/rotating beds, should also be explored in future work. 72,73…”

“…30 Water management with effective heat integration will be critical for the success of DAC technologies. 72,100,101 Additionally, the cost of functionalizing sorbents was also not considered. While this is thought to be minimal for polyamines, the cost of modifications could be substantial for other adsorbents such as MOFs, and thus modeling this cost is the focus of ongoing research.…”

“…57 Finally, diverse thermal energy sources, such as waste heat or heat pumps, and heat integration strategies should also be considered in future work. 71–73…”

Assessment of the Potential of Electrochemical Steps in Direct Air Capture through Techno-Economic Analysis

“…13 For the optimistic edge, the LR approach (with LR > 3%) predicts reaching that limit. This energy demand will only be feasible if heat can be provided by heat integration, 79,80 which is challenging for high-temperature heat of 900 °C, or the reaction system is changed. For TVSA, the heat of adsorption is the decisive factor determining the minimum energy demand.…”