Sunlight-Powered Tech Pulls Carbon From Air
U.S. researchers are testing a water-based, sunlight-driven method to remove carbon dioxide from the atmosphere.
Updated on Nov. 9, 2026 in Environmental
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Researchers in the United States are testing a technology that uses a water-based solution with special dyes to absorb carbon dioxide from the air. Sunlight is then used to release the captured gas for storage or industrial use.
Why it matters
The approach aims to reduce the high energy costs that conventional carbon capture methods require. Carbon removal faces high operating costs and declining investment, making cheaper methods a central challenge.
The only quantitative milestone in the report is a 2030 target for expanding the technology's use. The source does not provide capture rates or cost comparisons against conventional methods.
The players
Banyu Carbon
A company founded by the researchers to develop and commercialize the sunlight-driven carbon capture technology.
University of Washington
The institution where Alex Gagnon and Julian Sachs developed the underlying concept.
The details
The technology uses a water-based solution containing special dyes that absorbs carbon dioxide from the air, and sunlight releases the captured gas so it can be stored or used in industrial processes. The concept was developed by Alex Gagnon and Julian Sachs of the University of Washington, who founded Banyu Carbon to commercialize it.
Timeline
November 9, 2026: Report published on the researchers' carbon capture testing.
2030: Banyu Carbon aims to expand use of the technology.
Environmental Context
The concept grew out of coral reef research on Tetiaroa, an island north of Tahiti, and now extends that work toward industrial carbon removal. The industry it joins is currently marked by high operating costs and declining investment.
The technology is still being tested, with Banyu Carbon's expansion target set for 2030, so near-term availability for consumers or businesses is not established. The source gives no timeline for when a commercial version would reach everyday users.
The takeaway
Carbon removal is advancing through alternatives that aim to cut energy use, but cost remains the key hurdle for any method to scale. Watching whether Banyu Carbon meets its 2030 expansion goal will show whether sunlight-driven capture can compete on price.
Further reading
For more on the broader effort to pull carbon from the air, explore Environmental coverage on Wisevoter.
Source note: This article includes information reported by S A N A.
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