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
- DOE National Carbon Capture Centre welcomes Total as its newest memberon August 16, 2019 at 2:28 am
“The duality of flue gas sources available at the centre brings a span of compositions, which provide a strong baseline to understand the effectiveness and robustness of technologies to capture carbon ...
- How Effective Is Carbon Capture Technology?on August 16, 2019 at 1:29 am
As one of the main contributing factors to manmade climate change, the concentration of carbon dioxide (CO 2) in our atmosphere must ... the report uses an inter-model comparison of how Direct Air ...
- 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.
- Reforest the Tropics and New England Biolabs®, Inc. enter into agreement to plant 100 hectares of forest to offset carbon emissionson August 15, 2019 at 11:07 am
The reforestation project will conservatively sequester over 50,000 metric tons of carbon dioxide equivalent in the initial 25-year contract period. The forest carries the potential to capture and ...
- 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 ...
- Taking the pulse of peatland carbon emissions could measure climate impact of developmenton August 13, 2019 at 4:25 am
To do so, they collected samples of carbon dioxide being released from the water ... pin down more precisely when peatland sites begin to capture carbon again after being disturbed, which will ...
- 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 ...
- Chevron starts long-delayed carbon capture plant offshore Australiaon August 8, 2019 at 6:14 am
Chevron (NYSE:CVX) says it has launched operations of one of the world's largest carbon capture and storage plants ... 3.4M-4M metric tons/year of carbon dioxide will be buried, the company ...
- Gorgon LNG plant begins long-delayed carbon capture and storage projecton August 8, 2019 at 12:56 am
Half of the increase in Australia’s annual carbon dioxide emissions have been linked to Chevron and its partner’s failure to deliver on its agreement with the Western Australian government to capture ...
via Bing News