Characterization and Performance of Direct Air Capture Sorbent

Power-to-X technology using renewable electricity and carbon dioxide from ambient air: SOLETAIR proof-of-concept and improved process concept

“…Characterization and equilibrium performance of the adsorbent are presented in [45,46]. The DAC unit (developed and supplied by Hydrocell Oy) was instrumented for data collection, visualization, and analysis.…”

Stability of a Monoethanolamine-CO2 Zwitterion at the Vapor/Liquid Water Interface: Implications for Low Partial Pressure Carbon Capture Technologies

“…Altogether, the outcomes of this work strongly point toward the investigation of novel solvents, different from aqueous mixtures, to overcome the limits of the current absorbents. This is especially relevant in the design of cost-effective capture systems at ambient and low CO 2 partial pressures, − where the capture is likely to occur at the interface of the scrubbing solution.…”

“…Altogether, this work suggests that the use of novel solvents, different from aqueous mixtures, is strongly recommended to overcome the limits of the current absorbents: preliminary experimental studies in organic solvents seem to point in that direction. , This is particularly relevant for the potential design of novel and cost-effective capture systems at ambient and low CO 2 partial pressure − in which the capture process is extremely likely to occur at the interface of the scrubbing solution. Finally, the computational approach adopted here, which employs a novel topological metric for the exploration of the free-energy pathways, enables a more exhaustive description of all reaction intermediates while feasibly addressing interfacial processes that are otherwise hardly accessible experimentally or that are computationally costly by first-principles-based standard simulations.…”

“…Despite the large basic and applied research interest, the regeneration of amine-based scrubbers remains an energetically expensive step. − Therefore, this process stays in the industrial sector, where typically high CO 2 partial pressures are needed to solvate CO 2 gas into polar amine scrubbing solutions, enabling cost-effective capturing and eventually conversion. Interestingly, the need to capture and convert CO 2 even at low loading/partial pressure has become particularly relevant for the development of new technologies, which could also enable the widespread distribution in the near future of direct air capture devices. − …”

A review of CO2adsorbents performance for different carbon capture technology processes conditions

“…Adsorption of carbon dioxide (CO 2 ) in a gas mixture using solid adsorbents by pressure swing approach (PSA), thermal swing approach (TSA), or temperature vacuum swing approach (TVSA) has been studied in the industry as an attractive approach and a promising alternative to the amine scrubbing process. [1][2][3][4][5][6] The adsorption process is generally carried out by filling dry adsorbents into a packed column in the presence of a CO 2 stream, and the CO 2 is captured onto the adsorbent surface at atmospheric pressure and temperature of 25-65 °C. 5 It is cost-effective when CO 2 adsorption and desorption are conducted using PSA, TSA, or a combination of both to obtain pure CO 2 .…”