Background Carbon dioxide removal (CDR) from atmospheric air, which includes direct air capture (DAC), is essential to limit global warming to 2°C, or ideally 1.5°C. Current DAC methods based on thermal and pressure swings remain too energy intensive. Moisture-driven DAC using strong-base anion exchange resins (AER) binds CO2 from ambient air...

Background The accumulation of carbon dioxide (CO2) in the atmosphere has been documented to be the primary driver of global warming. The global average CO2 levels in the atmosphere continue to rise, with a predicted 1.5°C increase in global temperatures within the next two decades. The capture and storage of CO2 is an essential part of mitigating...

The need for technologies to remove carbon dioxide (CO2) from ambient air has been well established. In addition to conservation, reduced-carbon processes, and on-site capture efforts, a significant amount of CO2 will need to be removed from the atmosphere to avoid a looming climate change crisis. Nevertheless, the technologies are still new and the...

Microalgae are very useful biological systems for capturing carbon dioxide (CO2 ) and generating biomass and many useful products. Increasing the CO2 concentration in gas supplied to a microalgae growth system can improve its productivity many fold over using atmospheric air. Flue gas could be a good source of CO2 -enriched gas; however, its usefulness...