Scientists at the University of Waterloo have created a powder that could capture carbon dioxide (CO2) from factories and power plants.
The advanced carbon powder, developed using a novel process in the lab of Zhongwei Chen, a chemical engineering professor at Waterloo, could filter and remove CO2 from emissions at facilities powered by fossil fuels before it is released into the atmosphere with twice the efficiency of conventional materials.
“This will be more and more important in the future,” Chen said. “We have to find ways to deal with all the CO2 produced by burning fossil fuels.”
The new process, which involves manipulating the size and concentration of pores, could also be used to produce optimized carbon powders for applications including water filtration and energy storage, the other main strand of research in Chen’s lab.
CO2 molecules stick to the surface of carbon when they come in contact with it, a process known as adsorption. Since it is abundant, inexpensive and environmentally friendly, that makes carbon an excellent material to capture CO2, a greenhouse gas that is the primary contributor to global warming.
The researchers, who collaborated with colleagues at several universities in China, set out to improve adsorption performance by manipulating the size and concentration of pores in carbon materials.
The technique they developed uses heat and salt to extract a black carbon powder from plant matter. Carbon spheres that make up the powder have many, many pores and the vast majority of them are less than one-millionth of a metre in diameter.
“The porosity of this material is extremely high,” said Chen, who holds a Tier 1 Canada Research Chair in advanced materials for clean energy. “And because of their size, these pores can capture CO2 very efficiently. The performance is almost doubled.”
Once saturated with carbon dioxide at large point sources such as fossil fuel power plants, the powder would be transported to storage sites and buried in underground geological formations to prevent CO2 release into the atmosphere.
A paper on the CO2 capture work, In-situ ion-activated carbon nanospheres with tunable ultramicroporosity for superior CO2 capture, appears in the journal Carbon.
Learn more: New powder could help cut CO2 emissions
The Latest on: Carbon dioxide capture
via Google News
The Latest on: Carbon dioxide capture
- Melting Glaciers Are Helping Capture Carbonon August 19, 2019 at 12:00 pm
The thing about carbon dioxide is that it flows freely across the surface of ... And also how much CO 2 these meltwaters might capture, so scientists can build more robust carbon budgets, or estimate ...
- Carbon off-setting scheme supported by Sir Elton John will have no 'meaningful' effect on climateon August 19, 2019 at 9:38 am
which stop carbon dioxide - which would otherwise have been released into the atmosphere - from being released. One scheme is focused on identifying and repairing broken boreholes in Uganda - so local ...
- Stripe will pay $1 million a year to take carbon out of the air — but will it work?on August 19, 2019 at 8:19 am
It will allocate at least $1 million each year on negative emissions technology by purchasing tons of carbon dioxide that’s been taken out ... tech companies step up to the plate.” For carbon capture ...
- Carbon dioxide-capturing pine forests could be nurseries for native trees in NZon August 19, 2019 at 6:49 am
Fast and slow-growing exotic and native trees could be grown together to help New Zealand capture carbon dioxide and protect biodiversity, a Parliamentary select committee has been told. At the third ...
- AurCrest Gold and Blue Source sign Carbon Development & Marketing Agreement for Forest Carbon Sequestration Opportunitieson August 19, 2019 at 6:40 am
AurCrest and Bluesource - will work together to assess the potential of forests to capture and sequester carbon dioxide within the First Nation's traditional territory (the 'Project') for the ...
- New Mexico city aims to keep open San Juan coal-fired power planton August 16, 2019 at 4:17 pm
... the project but that it could benefit from federal tax credits associated with investments in carbon-capture technology. As for the carbon dioxide that would be captured, company officials have ...
- David Keith’s Carbon Removal Moonshoton August 15, 2019 at 9:54 pm
Direct air capture was first proposed in the 1990s as a process for achieving “negative emissions” — the point at which humanity takes more carbon dioxide out of the atmosphere than we put in.
- Trees Killed by Invasive Insects Release Huge Amounts of Carbon Dioxide, Study Sayson August 13, 2019 at 11:51 am
Trees capture carbon dioxide, which experts say is key in curbing the effects of global warming. More than 40 percent of the plant matter in forests could be at risk. Loss of trees can make ...
- You can now pay to turn your carbon emissions to stoneon August 9, 2019 at 5:07 pm
At its cheapest, Climeworks’ offset scheme will cost a customer about $1,100 to capture and permanently sequester 1 metric ton of carbon dioxide. With other offsets available for as low as $0.28 ...
- Chevron’s carbon capture and storage project finally onon August 8, 2019 at 7:15 am
Chevron’s controversial $2.5 billion initiative to store carbon dioxide deep beneath Western Australia’s Barrow Island has finally started operation. The carbon dioxide injection project, the largest ...
via Bing News