Scientists find affordable way to recapture Carbon dioxide and burn it

Scientists find affordable way to recapture Carbon dioxide and burn it

New tests involving a CO2-extraction method called direct air capture suggests pulling carbon dioxide from the atmosphere is cheaper than scientists expected.

"The carbon dioxide generated via direct air capture can be combined with sequestration for carbon removal, or it can enable the production of carbon-neutral hydrocarbons, which is a way to take low-priced carbon-free power sources like solar or wind and channel them into fuels that can be used to decarbonise the transportation sector", said lead author David Keith, founder and chief scientist of Carbon Engineering and professor of applied physics and public policy at Harvard University. This price represents a significant drop from current costs, which can run as high as $600 per ton.

Carbon Engineering founder and Harvard Professor at the Harvard School of Engineering and Applied Sciences, David Keith, and his colleagues say that they have demonstrated for the first time a scalable and cost-effective solution for removing CO2 from the atmosphere.

"I hope it's a real change in the community's view of the technology", Keith says. All of the technology required to build the new carbon capture system already exists, according to MIT Technology Review.

"It costs more than a barrel of oil right now, but in places with a price on carbon of $20 a ton we're competitive", Oldham said in an interview. Climate scientists say countries will need to drop Carbon dioxide emissions to near zero by midcentury and then remove more Carbon dioxide than they emit, if the planet is to avoid a catastrophic 2°C warming.

Technological "fixes" to the carbon emissions driving climate change have always been regarded with some suspicion by scientists.

Celebrity chef Anthony Bourdain found dead in France at 61
For all of us outsiders looking in, Bourdain seemed to have the flawless life. "It is a world very, very different than my own". Following official confirmation of Bourdain's death from his employer, CNN , Argento took to Twitter on Friday to pay tribute.

Mr. Oldham said the air-to-fuel process could reduce the need to electrify the transportation system by providing a carbon-neutral alternative to traditional fuels. The last comprehensive analysis of the technology, conducted by the American Physical Society in 2011, estimated that it would cost $600 per tonne. In 2015, Carbon Engineering launched its first pilot plant for capturing CO2 in British Columbia in Canada.

Capturing the Carbon dioxide and storing it geologically is a great opportunity. The results: Their technology can capture Carbon dioxide for between $94 and $232 per ton, they report today in Joule. Once that's done, heating and a bunch of other chemical reactions are used to re-extract the gas and employ it as a carbon source for the generation of valuable fuels such as gasoline, diesel or jet fuel.

The National Renewable Energy Laboratory (NREL) reported in 2016 that electrolysis using wind power could provide hydrogen at a cost of about $4.50 per kilogram. The H2 is then combined with Carbon dioxide to make liquid hydrocarbons using conventional chemical engineering technology.

Carbon Engineering's blows air through towers that have a solution of potassium hydroxide, which reacts with CO2 to make potassium carbonate.

That's more expensive than most fuels today, but not by much. The company will have to: prove there's a market for the carbon-neutral synthetic fuel, ramp up operations for large-scale plants, and keep costs low enough to be a feasible solution for climate change.

"Until you really can confirm the costs and performance at scale, you've always got to take those costs with a grain of salt", he says.

Related Articles