![]() It adds scalability and gives a path to low cost.” How Does Direct Ocean Capture Work?Ĭaptura’s process works like a large desalination plant. “Combining nature and technology is very powerful. ![]() “Our process simply uses the ocean as a conduit for carbon removal,” says Oldham. Department of Energy’s target for its carbon-negative moonshot initiative. DOC also avoids using precious land, could be coupled with offshore wind energy, and allows easier access to oceanic CO 2 storage sites.īoth companies say they could remove carbon from oceans for around $100 per tonne, the U.S. Pulling carbon out from ocean water, where it is present at a concentration 150 times as high as in the atmosphere, is more efficient than air capture, says Captura’s CEO Steve Oldham. But Equatic, Captura and others are trying to prove the concept’s viability with backing from the Chan Zuckerberg Initiative, Gates Foundation, oil and gas companies, and the Advanced Research Projects Agency–Energy (ARPA-E). panel recently calling the approach “unproven.”Ĭompared to air capture, direct ocean capture (DOC) is even less charted territory. Yet carbon removal remains contentious, with a U.N. ![]() About two dozen direct-air capture projects are underway around the world, and last week the Biden administration announced the first winners of its US $3.5 billion purse for the technology. The idea of pulling CO 2 from air has only recently become mainstream. Captura has been testing a smaller 1-tonne-per-year system in Newport Beach, Calif., since August 2022, and was one of 15 milestone winners announced last spring by the XPrize Carbon Removal competition, one of only three with ocean-based carbon-removal platforms.Ĭarbon in ocean water is present at a concentration 150 times as high as in the atmosphere. By early fall, startup Captura will start operating a 100-tonne-per-year land-based plant also at AltaSea. The company plans to have a 10-tonne-per-day unit running by 2025 in Singapore, and by 2028, expects to remove millions of tonnes of CO 2 annually.Įquatic’s pilot won’t be alone for long. facility and another similar one in Singapore remove 100 kilograms of CO 2 from seawater daily. Removing the gas makes room for them to soak up more. The oceans are a vast carbon sponge, absorbing a quarter of global CO 2 emissions. The dock belongs to the ocean research institute AltaSea and the barge to Equatic, which is testing a daring new idea to remove carbon dioxide from the atmosphere-by sucking it out of the seas. Projects range from conceptual engineering and materials design at laboratory and bench scale (Technology Readiness Level 2-5) to large-scale testing and front-end engineering and design (FEED) studies (TRL 6-7) to lower both capital and operating costs and improve the economics of PSC.Off a dock in the Port of Los Angeles, a 100-foot blue barge carrying large metal cages and tanks, electronic equipment, and a jumble of pipes and wires has been floating since mid-April. The PSCC Program is accelerating commercially deployable solutions that can be applied to a wide spectrum of CO 2 emissions sources, including facilities that produce power, hydrogen, ethanol, cement, or steel. DOE’s Office of Fossil Energy and Carbon Management (FECM) has adopted a comprehensive, multi-pronged approach for carbon management that involves the coupling of carbon capture methods (i.e., Point Source Capture (PSC) for fossil fuel-based power generation and industrial sources and carbon dioxide removal (CDR) technologies co-located with low-carbon energy sources) with long-duration carbon storage or CO 2 utilization/conversion into long-lasting products. Department of Energy/National Energy Technology Laboratory’s (DOE/NETL) Point Source Carbon Capture Program is developing the next generation of advanced carbon dioxide (CO 2) capture concepts to support the United States in achieving ambitious goals for a greenhouse gas (GHG)-neutral economy by 2050, a carbon-pollution-free power sector by 2035, and a 50% reduction from 2005 levels in economy-wide net GHG pollution by 2030. Advancing technologies for the capture of CO 2 from point sources, such as natural gas power and industrial facilities, with minimum cost and energy penalty
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