A smog-busting device pioneered by Aberdeen academics has been showcased to US senators in a hope it will make factories greener.
A team from Aberdeen University has developed a carbon capture device, which fits on the flues of industrial buildings to stop harmful gas escaping into the air.
The carbon then mixes with other chemicals to produce a substance used to produce common household goods such as writing paper and food packaging.
That substance is typically sold at £400 per tonne and the team hopes it can sell their devices across the world to help the environment.
Under the company name of CCM (UK) Ltd, the team has entered the device into the Carbon XPrize – a contest where judges pick an innovation that can change the world.
The winning entry receives $20 million (£15.3m) prize money and judges are currently deliberating which of the five final entries should win.
While they make their decision, the Carbon XPrize organisers arranged for the Aberdeen University group to showcase their device to some of the most senior politicians in the USA.
Those politicians are in charge of creating laws which give benefits to US companies that install environmentally-friendly devices such as the one being produced by the Aberdeen University team.
Such laws are designed to persuade traders to install green gadgets in return for Government incentives.
At the event, held on Capitol Hill in Washington DC, pictured inset, Professor Zoe Morrison and Professor Fred Glasser flew the flag for the Aberdeen University team, presenting the device to politicians and senior delegates.
Professor Glasser said: “I was delighted to attend the Washington event, which provided an opportunity to showcase the exciting technology that we have developed here in Aberdeen.”
Dr Mohammed Imbabi, who teaches civil engineering at the university and is part of the team that developed the device, said: “The event demonstrates the interest there is in our carbon capture device.
“Even at a time when President Trump isn’t advocating green technologies, there is still significant interest in the USA from others who want to introduce methods of reducing carbon emissions – and we strongly welcome their interest.”
Now the team has made it to the final, it has been challenged to build a version of their device 10 times bigger than the one it has already proved to recycle carbon.
The larger device will be fitted at the Dry Fork Power Station in Gillette, Wyoming.
Dr Imbabi has recently visited the power station as part of the project.
He added: “The challenge now is to prove it works at a larger scale and we are looking forward to seeing the results.”
A Carbon XPrize spokesman said: “Our finalists represent an incredible diversity of approaches to turn waste (CO² emissions) into a wide variety of valuable products, such as enhanced concrete, liquid fuels, plastics and carbon fiber.
“These innovators are ushering in the circular carbon economy by turning carbon from a liability into an asset.
“It’s this spirit of innovation that will help us take action on climate.”
He added: “These finalists range from entrepreneurs and start-ups to academic institutions and companies that have been tackling the challenge for more than a decade.”