Direct Air Capture (DAC) is a method of collecting carbon dioxide from the atmosphere at more diverse and distributed concentrations. DACs push air past a sorbent chemical which binds with CO2, effectively separating it from other molecules. Afterwards, it is unbound, purified, and concentrated for use in industrial applications. While cost for the process remains high, entrepreneurs are helping the technology mature in order to make it a more reliable means of reducing greenhouse gas emissions.
The Healthy Climate Alliance (HCA) is using a prototype DAC that uses a resin-based sorbent which collects CO2 from the air and releases it when submerged in water. The seven-foot tall prototype has the capacity to pull 2-10 pounds of carbon a day. The HCA then sells the CO2 to Blue Planet Ltd., a construction company that creates carbon based building products for use in materials like concrete.Read More