Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New method for extracting radioactive elements from air and water

21.07.2014

Scientists at the University of Liverpool have successfully tested a material that can extract atoms of rare or dangerous elements such as radon from the air.

Gases such as radon, xenon and krypton all occur naturally in the air but in minute quantities – typically less than one part per million. As a result they are expensive to extract for use in industries such as lighting or medicine and, in the case of radon, the gas can accumulate in buildings. In the US alone, radon accounts for around 21,000 lung cancer deaths a year.

Previous methods for extracting these elements have involved cryogenic technology, which is energy intensive and expensive. But now, the chemists from the University of Liverpool alongside colleagues at the Pacific Northwest National Laboratory, USA have used an 'organic cage molecule' called CC3 to separate krypton, radon and xenon from air at concentrations of only a few parts per million.

Chemist, Professor Andy Cooper, led the study. He said: "If you imagine sorting marbles then you see the problem with sorting these atoms. They are round in shape and of a similar size, not to mention that only one marble in every million is the one you are looking for."

CC3 which was developed in Liverpool is a molecule that is made up of cavities, or cages, into which gas molecules such as xenon and radon fit very precisely. By a process of adsorption – where molecules or atoms stick onto the surface – the right gas molecules are held in place, while others such as water or nitrogen are released.

Tests using columns packed with CC3 crystals have produced results far superior to the current best materials and this raises the possibility that CC3 could be used for commercial processes, for example in the clean-up of nuclear waste or in the adsorption and detection of radon gas in homes.

Further studies show that CC3 also has potential in the pharmaceutical industry, which uses molecules as feedstocks in the production of drugs, and where these molecular feedstocks need to be separated from other closely related molecules.

Professor Cooper concluded: "This material could solve commercial problems associated with the extraction of rare gases or other molecules from very dilute mixtures. The key is to design exactly the right fit between the cavity and the molecule that you want to capture."

###

The paper was published in the journal Nature Materials, and supported by a grant from the Engineering and Physical Sciences Research Council (EPSRC). The University's Department of Chemistry collaborated with the Pacific Northwest National Laboratory, Newcastle University and Aix-Marseille Université.

Jamie Brown | Eurek Alert!
Further information:
http://www.liverpool.ac.uk

Further reports about: Engineering Laboratory Pacific Physical feedstocks krypton radon xenon

More articles from Materials Sciences:

nachricht Nanobionics Supercharge Photosynthesis
22.05.2015 | Department of Energy, Office of Science

nachricht Mesoporous Particles for the Development of Drug Delivery System Safe to Human Bodies
22.05.2015 | National Institute for Materials Science

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Basel Physicists Develop Efficient Method of Signal Transmission from Nanocomponents

Physicists have developed an innovative method that could enable the efficient use of nanocomponents in electronic circuits. To achieve this, they have developed a layout in which a nanocomponent is connected to two electrical conductors, which uncouple the electrical signal in a highly efficient manner. The scientists at the Department of Physics and the Swiss Nanoscience Institute at the University of Basel have published their results in the scientific journal “Nature Communications” together with their colleagues from ETH Zurich.

Electronic components are becoming smaller and smaller. Components measuring just a few nanometers – the size of around ten atoms – are already being produced...

Im Focus: IoT-based Advanced Automobile Parking Navigation System

Development and implementation of an advanced automobile parking navigation platform for parking services

To fulfill the requirements of the industry, PolyU researchers developed the Advanced Automobile Parking Navigation Platform, which includes smart devices,...

Im Focus: First electrical car ferry in the world in operation in Norway now

  • Siemens delivers electric propulsion system and charging stations with lithium-ion batteries charged from hydro power
  • Ferry only uses 150 kilowatt hours (kWh) per route and reduces cost of fuel by 60 percent
  • Milestone on the road to operating emission-free ferries

The world's first electrical car and passenger ferry powered by batteries has entered service in Norway. The ferry only uses 150 kWh per route, which...

Im Focus: Into the ice – RV Polarstern opens the arctic season by setting course for Spitsbergen

On Tuesday, 19 May 2015 the research icebreaker Polarstern will leave its home port in Bremerhaven, setting a course for the Arctic. Led by Dr Ilka Peeken from the Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research (AWI) a team of 53 researchers from 11 countries will investigate the effects of climate change in the Arctic, from the surface ice floes down to the seafloor.

RV Polarstern will enter the sea-ice zone north of Spitsbergen. Covering two shallow regions on their way to deeper waters, the scientists on board will focus...

Im Focus: Gel filled with nanosponges cleans up MRSA infections

Nanoengineers at the University of California, San Diego developed a gel filled with toxin-absorbing nanosponges that could lead to an effective treatment for skin and wound infections caused by MRSA (methicillin-resistant Staphylococcus aureus), an antibiotic-resistant bacteria. This "nanosponge-hydrogel" minimized the growth of skin lesions on mice infected with MRSA - without the use of antibiotics. The researchers recently published their findings online in Advanced Materials.

To make the nanosponge-hydrogel, the team mixed nanosponges, which are nanoparticles that absorb dangerous toxins produced by MRSA, E. coli and other...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

International symposium: trends in spatial analysis and modelling for a more sustainable land use

20.05.2015 | Event News

15th conference of the International Association of Colloid and Interface Scientists

18.05.2015 | Event News

EHFG 2015: Securing health in Europe. Balancing priorities, sharing responsibilities

12.05.2015 | Event News

 
Latest News

Mesoporous Particles for the Development of Drug Delivery System Safe to Human Bodies

22.05.2015 | Materials Sciences

Computing at the Speed of Light

22.05.2015 | Information Technology

Development of Gold Nanoparticles That Control Osteogenic Differentiation of Stem Cells

22.05.2015 | Materials Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>