•Three DAC processes were compared on the basis of exergy demand and productivity•Solid sorbent-based perform better than solvent-based processes•CO2 capture costs below 200 $/tCO2 are achievable for all technologies•Adsorption/desorption kinetics H2O affinity strongly affect solid sorbent process Artificial removal CO2 from atmosphere will be pivotal realization CO2-net-zero plans policies. Am...

The increasing rise in the rate of both anthropogenic CO2 emissions and atmospheric CO2 concentration, combined with an evolving understanding of what this means for global climate change both now, and in the future, has increased the need for novel technologies for CO2 capture from large point sources. Current industry standards involve the use of amine solvents, which have a large parasitic l...

Diethanolamine increased the incidence and multiplicity of liver tumors in the mouse following chronic exposure. Diethanolamine is known to inhibit cellular choline uptake. Since choline deficiency produces tumors in rodents, diethanolamine, through choline depletion, may result in tumor development in rodents. The potential for diethanolamine to function through this mode of action in humans i...