The new technology could help to remove vast amounts of carbon dioxide from the atmosphere.
, is called single-step carbon sequestration and storage, or sCS"To mitigate climate change, we need to remove carbon dioxide from the atmosphere at a level between 10 billion and 20 billion metric tons per year," senior author Gaurav Sant explained in a press releaseAn illustration showcasing the process used by the UCLA team's new technology.
The machine can either gather the seashell-like material for use on land, or it can release it back into the ocean. The seawater used in the machine flows back out to the ocean, where it will then absorb more carbon dioxide.One of the great benefits of this method is that CO2 levels are 150 times more concentrated in seawater than they are in the air, meaning any method extracting CO2 from the ocean is more efficient.
"Durable, safe, and permanent storage is the premise of our solution," said first author Erika Callagon La Plante, a former UCLA assistant project scientist who is currently an assistant professor at the University of Texas at Arlington. However, the team does caution that removing CO2 from the atmosphere is"first and foremost" an economic challenge, given the scale of the task. They say it would take approximately 1,800 of their sCS plants to remove 10 billion metric tons of carbon dioxide each year, costing trillions of dollars.The research team's next step is to run real-world experiments so that they can improve their technology by collect data they couldn't acquire in the laboratory.
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