Uw-Madison La Follette School of Public Affairs: New Research Shows How Important a New ...

Direct air capture with carbon storage (DACCS), a technology that uses chemicals to capture the heat-trapping gas directly from the air, could help remove nearly five gigatonnes of carbon dioxide by 2050.

That's according to a new study in the Proceedings of the National Academy of Sciences led by Morgan Edwards of the La Follette School of Public Affairs at the University of Wisconsin-Madison and PhD student Zachary Thomas.

"We know we will need to rapidly reduce CO2 emissions at the source, but technologies like DACCS that can remove CO2directly from the atmospherecould also play an important role," Edwards says in a press release.

"DACCS could be an important tool to combat climate change and reach 5 gigatonnes by 2050 in annual removals if it follows the path of rapid-growth technologies such as solar photovoltaics," Edwards adds.

But the researchers found that DACCS could only remove 0.2 gigatonnes per year if it scales at a similar rate to slow-growth technologies such as natural gas pipelines.

"DACCS is one of severalcarbon dioxide removal (CDR) technologies that capture CO2from the atmosphere and store it underground, on land, in the sea, or in durable products," the study's co-

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