Navigation Links
Glass offers improved means of storing UK's nuclear waste
Date:8/22/2012

ILW makes up more than three quarters of the volume of material destined for geological disposal in the UK. (1)

Currently the UK's preferred method is to encapsulate ILW in specially formulated cement. The waste is mixed with cement and sealed in steel drums, in preparation for disposal deep underground.

Two studies, published in the latest issues of The Journal of Nuclear Materials and European Journal of Glass Science and Technology A show that turning this kind of waste into glass, a process called vitrification, could be a better method for its long-term storage, transport and eventual disposal.

HLW is already processed using this technology which reduces both the reactivity and the volume of the waste produced. Until now, this method has not been considered suitable for ILW because the technology was not developed to handle large quantities of waste composed from a variety of different materials.

The research programme, funded by the UK's NDA and led by Professor Neil Hyatt in the Department of Materials Science and Engineering, at the University of Sheffield, tested simulated radioactive waste materials those with the same chemical and physical makeup, but with non-radioactive isotopes to produce glass and assess its suitability for storing lower grades of nuclear waste.

The process used to produce the glass waste storage packages is straightforward: the waste is dried, mixed with glass forming materials such as iron oxide or sodium carbonate, heated to make glass and finally poured into a container. For certain wastes for example radioactively contaminated sand the waste is actually used in the glass-making process.

A key discovery made by the Sheffield team was that the glasses produced for ILW proved to be very resistant to damage by energetic gamma rays, produced from the decay of radioactive materials. "We found that gamma irradiation produced no change in the physical properties of these glasses, and no evidence that the residual radiation caused defects," says Professor Hyatt. "We think this is due to the presence of iron in the glass, which helps heal any defects so they cannot damage the material."

"For large volumes of waste that need to be stored securely, then transported to and eventually disposed of, vitrification could offer improved safety and cost effectiveness" explains Professor Hyatt.

Dr Darrell Morris, Research Manager, NDA said "We welcome this fundamental research demonstrating a possible alternative means of treating ILW. We look forward to seeing further progress on the applicability of this technology to the UK's waste inventory"


'/>"/>
Contact: Abigail Chard
abigail@campuspr.co.uk
0044-011-335-72100
University of Sheffield
Source:Eurekalert

Related biology news :

1. Feel-good glass for windows
2. NJIT, Chinas Bengbu Glass Institute sign agreement for R&D, training
3. Selfish DNA in animal mitochondria offers possible tool to study aging
4. Division of labor offers insight into the evolution of multicellular life
5. Tale of 2 scientific fields -- ecology and phylogenetics -- offers new views of Earths biodiversity
6. 3-D motion of cold virus offers hope for improved drugs using Australias fastest supercomputer
7. Pioneering self-contained smart village offers world model for rural poverty relief
8. Study offers new insights into the effects of stress on pregnancy
9. Moderate coffee consumption offers protection against heart failure
10. Early Bird Offers on Healthcare and Biotechnology Conferences, Save Up To 20% by Registering with Global Information
11. Songbirds learning hub in brain offers insight into motor control
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/23/2017)... , Aug. 23, 2017  The general public,s help is being enlisted ... bacteria that live in and on the human body –and are believed ... The Microbiome Immunity ... human microbiome, starting with the gut. The project's goal is to help ... credit: IBM ...
(Date:6/14/2017)... IBM ) is introducing several innovative partner startups at ... between startups and global businesses, taking place in ... startups will showcase the solutions they have built with IBM ... France is one of the most ... increase in the number of startups created between 2012 and ...
(Date:4/24/2017)... April 24, 2017 Janice Kephart ... with  Identity Strategy Partners, LLP (IdSP) , today ... without President Trump,s March 6, 2017 Executive ... , refugee vetting can be instilled with greater confidence, ... now, all refugee applications are suspended by until ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... SomaGenics announced the receipt of a Phase ... (Single Cell), expected to be the first commercially available ... from single cells using NGS methods. The NIH,s recent ... development of approaches to analyze the heterogeneity of cell ... for measuring levels of mRNAs in individual cells have ...
(Date:10/9/2017)... ... , ... The award-winning American Farmer television series will feature 3 Bar Biologics ... at 8:30aET on RFD-TV. , With global population estimates nearing ten billion people ... to feed a growing nation. At the same time, many of our valuable resources ...
(Date:10/7/2017)... Phoenix, Arizona (PRWEB) , ... ... ... than 15 years’ experience providing advanced instruments and applications consulting for microscopy ... the in-house expertise in application consulting, Nanoscience Analytical offers a broad range ...
(Date:10/6/2017)... ... October 06, 2017 , ... On ... and webinar on INSIGhT, the first-ever adaptive clinical trial for glioblastoma (GBM). The ... The event is free and open to the public, but registration is required. ...
Breaking Biology Technology: