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Friday, June 08, 2018

Carbon-Capture Tech Getting More Feasible?

As always, tech-company press releases and futurological-spin always demand to be taken with giant grains of sand, but, via Eco-Watch, this seems promising enough to note:
Scientists at the Canadian company Carbon Engineering have moved carbon-capture technology one step closer from pipe dream to viable solution. The company has developed technology at its plant in British Columbia that can both remove carbon dioxide from the atmosphere and convert it into carbon-neutral fuels, suggesting such technology could be a meaningful part of the fight against climate change. In a paper published Thursday in Joule, they estimated the costs of scaling up their operation to be $94 to $232 per ton of carbon dioxide captured. This is much cheaper, and more feasible, than some theoretical estimates that have put the costs of scaling up carbon capture technology at $1,000 per ton of carbon dioxide... The paper claims to be the first to provide a cost estimate for a carbon-capture system that is both based on technology commonly used in commercial engineering and described in enough detail that readers can adequately assess the results for themselves... The technology works by sucking air into cooling tower-like structures with fans. The acidic carbon dioxide is attracted to an alkaline liquid within the towers that is then taken into the factory where acid and base are separated. The carbon-dioxide containing liquid is frozen and then reheated into a slurry that is combined with hydrogen to make liquid fuels... [T]he technology could help the transportation sector, responsible for around 20 percent of carbon dioxide emissions, transfer over to renewable energy and fuel.

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