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Going negative: Stanford scientists explore new technologies that remove atmospheric CO2
Date:2/16/2013

2, which causes seawater to become more acidic. The authors cited research by David Keith of Harvard University suggesting that magnesium carbonate and other minerals could be added to the ocean to reduce acidity and sequester atmospheric CO2 absorbed in seawater. Although the potential for CO2 sequestration in the ocean is large, "the associated risks to the marine environment need to be adequately assessed," the authors concluded.

Keith has also launched a startup company called Carbon Engineering that's developing industrial-scale machines "artificial trees" that are designed to capture CO2 directly from the air. Unlike BECCS and biochar systems, which produce electricity or fuels, mechanical "trees" do not generate power and, in fact, require natural gas to operate.

Following the 2012 negative-emissions workshop, GCEP issued an international request for proposals to develop net-negative carbon emissions technologies. The awardees will be announced later this year. Up to to $6 million could be awarded.


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Contact: Mark Shwartz
mshwartz@stanford.edu
650-723-9296
Stanford University
Source:Eurekalert

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