In order to achieve climate targets, we need to do everything we can to reduce emissions. Unfortunately, mitigation alone won’t get us to net zero; negative emissions technologies like DAC are critical to reaching the Paris Agreement goals. To keep global warming to under 1.5°C by 2100, leading studies show that negative emissions will need to remove in the order of 10-15 gigatons a year by 2050.
CarbonCapture’s DAC machines draw in large amounts of air using powerful fans. The air is first dehumidified and filtered through a reactor that contains zeolites, which capture CO2 as well as any remaining water (“adsorbtion”). After the zeolites reach their capacity, a vacuum is pulled and the reactor temperature is raised, releasing concentrated CO2 and water into collectors (“desorption”). The reactor is cooled, and a new cycle begins.
CarbonCapture has developed a set of technical innovations that enable, for the first time, the use of zeolites for capturing CO2 as part of a commercial DAC system. A class of molecular sieves, zeolites are inorganic, inexpensive, long-lasting, and non-toxic. Moreover, they are already manufactured in very large quantities for multiple industrial applications, eliminating a major barrier to economically scaling DAC to gigaton levels.