Heirloom Carbon Technologies is an innovative company located at Brisbane, CA focusing on removing CO2 from the atmosphere using a Direct Air Capture (DAC) technology that leverages the natural process of limestone carbon mineralization. Their approach accelerates the carbon capture ability of limestone, converting CO2 to rock in days instead of years. They operate the first commercial DAC facility in the United States, located in Tracy, California, which is powered by renewable energy and contributes to local employment. Heirloom aims to remove 1 billion tons of CO2 by 2035, and they offer high-quality carbon removal credits for purchase.
Limestone, composed of calcium oxide and CO2, is heated to release CO2, leaving calcium oxide that absorbs atmospheric CO2, reverting to limestone. This accelerated natural process happens in days. The CO2 is either stored underground or used in materials like concrete. This cyclic process is cost-effective due to limestone’s abundance and the modular design of their facilities.
For more information, visit their website at Heirloom Carbon Technologies.