World’s first “negative emissions” plant turns carbon dioxide into stone
A fascinating article about reducing CO2 emissions using direct air capture technology. Three startups plan to use the technology, which is considered exorbitantly expensive, to capture carbon dioxide from air. "Climeworks and Global Thermostat have piloted systems in which they coat plastics and ceramics, respectively, with an amine, a type of chemical that can absorb CO2. Carbon Engineering uses a liquid system, with calcium oxide and water." They are targetting prices of $100 per ton and $50 per ton with their efforts. Even with those price points, it would still cost $500 billion per year to remove excess carbon dioxide from air. Climeworks has built the world's first "negative emissions" power plant in Iceland. More information about the technology behind this venture can be found here and here.
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