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Many Carbon Capture Projects Are Now Launching
lundi 1 juillet 2024, 09:34 , par Slashdot
The Los Angeles Times reports that 'multiple projects seeking to remove carbon dioxide from the air have been launched across Los Angeles County:
When completed, Project Monarch and its wastewater component, Pure Water Antelope Valley, will purify up to 4.5 million gallons of water each day and capture 25,000 tons of atmospheric CO2 each year. (The typical gasoline-powered automobile spews 4.6 tons of carbon each year, according to the Environmental Protection Agency).... But the Palmdale project isn't the only new carbon-capture development in L.A. County. On Friday, officials from CarbonCapture Inc. gathered in Long Beach to introduce the first commercial-scale U.S. direct air capture, or DAC, system designed for mass production. The unit, which resembles a shipping container, can remove more than 500 tons of atmospheric CO2 per year... The L.A.-based company also announced that it will mass-produce up to 4,000 of its DAC modules annually at a new facility in Mesa, Arizona. It joins similar efforts from L.A.-based Captura, which is working to remove CO2 from the upper ocean; L.A.-based Avnos, which produces water while capturing carbon; and L.A.-based Equatic, which is working to remove atmospheric CO2 using the ocean... [Equatic's] San Pedro facility pumps seawater through a series of electric plates that separate the water into hydrogen and oxygen as well as acidic and alkaline streams of liquid. The alkaline, or base, stream is exposed to the atmosphere, where it mineralizes CO2 into carbonates that are then dissolved and discharged back into the ocean for permanent storage, operators say Additionally, the hydrogen produced by the process is carbon-negative, making it a source of renewable energy that can be used to fuel the CO2 removal process or sold to other users, said Edward Sanders, chief operating officer at Equatic. Equatic announced this month that it will partner with a Canadian carbon removal project developer, Deep Sky, to build North America's first commercial-scale ocean-based CO2 removal plant in Quebec, following the success of its effort in Los Angeles as well as another facility in Singapore. While the San Pedro facility can capture about 40 tons of CO2 per year, the Quebec facility will capture about 100,000 tons per year, Sanders said. Meanwhile, two new projects by direct air capture company Heirloom were announced this week in Louisiana. Those projects are 'expected to remove hundreds of thousands of tons of carbon dioxide from the air per year,' according to the Associated Press, 'and store it deep underground... part of 'a slew of carbon removal and storage projects that have been announced in Louisiana.' Heirloom estimates that they will eventually remove 320,000 tons of carbon dioxide each year... The company uses limestone, a natural absorbent, to extract carbon dioxide from the air. Heirloom's technology reduces the time it takes to absorb carbon dioxide in nature from years to just three days, according to the company's press release. The carbon dioxide is then removed from the limestone material and stored permanently underground. In May America's Energy department also announced $3.5 billion in funding for its carbon-capture program — four large-scale, regional direct air capture hubs 'that each comprise a network of carbon dioxide removal projects...' The hubs will have the capacity to capture and then permanently store at least one million metric tons of CO2 from the atmosphere annually, either from a single unit or from multiple interconnected units. And Shell Canada has a pair of carbon capture projects in Alberta it expects to have operational toward the end of 2028, according to the CBC: The Polaris project is designed to capture about 650,000 tonnes of carbon dioxide annually from the Scotford complex. That works out to approximately 40 per cent of Scotford's direct CO2 emissions from the refinery and 22 per cent of its emissions from the chemicals complex. Read more of this story at Slashdot.
https://news.slashdot.org/story/24/07/01/0040252/many-carbon-capture-projects-are-now-launching?utm_...
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