HOME >> BIOLOGY >> NEWS
Zirconate material will improve plutonium storage safety

ANN ARBOR---An international research team, led by University of Michigan scientists, has found that gadolinium zirconate is much more resistant to radiation than the ceramic currently being considered for disposal of plutonium from dismantled nuclear weapons in the United States. This highly durable material---a zirconate pyrochlore---is calculated to resist radiation damage for up to 30 million years.

The research team performed a systematic study of the radiation resistance of gadolinium titanate, the ceramic currently proposed for plutonium immobilization, and zirconate compositions. Results indicate that the titanate will be damaged by radiation in less than 1,000 years. The zirconate will not sustain damage for periods up to 30 million years. Considering that plutonium is an environmental contaminant with a radioactive half-life of 24,500 years, the multi-million-year calculation of the zirconate's durability makes it a leading candidate for the immobilization of plutonium.

"This is a significant scientific discovery with major environmental impact for future generations," said Dr. Yok Chen, Program Manager in the Office of Basic Energy Sciences at the U.S. Department of Energy, which funded this research at the University of Michigan and Pacific Northwest National Laboratory (PNNL).

Rodney Ewing, professor of nuclear engineering and radiological sciences at the U-M College of Engineering, and William Weber, a senior staff scientist at PNNL, led the team of researchers that included scientists at the Australian Nuclear Science and Technology Organization and the Indira Gandhi Centre for Atomic Research in India.

The team's findings were first published in the December 1999 Journal of Materials Research (JMR). This past week, another international team of researchers at Los Alamos National Laboratory, working independently from the U-M team, announced similar results with an erbium zirconate ceramic.

The safe disposal of p
'"/>

Contact: Janet Harvey-Clark
janethc@engin.umich.edu
734-647-7087
University of Michigan
10-Aug-2000


Page: 1 2

Related biology news :

1. Environmental costs of home construction lower with wise choice, reuse of building materials
2. Biocompatibility to widen scope of biomaterial applications
3. Design of composite materials that detect terahertz discovered
4. Marine sponges provide model for nanoscale materials production
5. Lens replacement material may improve cataract treatment, eliminate bifocals
6. Nature designs hard and tough materials at the nanoscale
7. In potentially important discovery, scientists find two forms of genetic material chromatin
8. Computer program reveals optimum microstructure for new materials
9. Transforming textbooks: AAAS and partners target K-12 science materials for improvement
10. Bloodworms way with copper likely provides paradigm for new materials
11. Smart materials expand within global marketplace

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/9/2016)... May 9, 2016 Elevay is ... to expanding freedom for high net worth professionals seeking ... today,s globally connected world, there is still no substitute ... ever duplicate sealing your deal with a firm handshake. ... by taking advantage of citizenship via investment programs like ...
(Date:4/26/2016)... 27, 2016 Research and ... Biometrics Market 2016-2020"  report to their offering.  , ... The analysts forecast the global multimodal biometrics ... during the period 2016-2020.  Multimodal biometrics ... such as the healthcare, BFSI, transportation, automotive, and ...
(Date:4/13/2016)... 13, 2016  IMPOWER physicians supporting Medicaid patients in ... new clinical standard in telehealth thanks to a new ... higi platform, IMPOWER patients can routinely track key health ... mass index, and, when they opt in, share them ... to a local retail location at no cost. By ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... , ... June 23, 2016 , ... ... YM (Yeast and Mold) microbial test has received AOAC Research Institute approval 061601. ... microbial tests introduced last year,” stated Bob Salter, Vice President of Regulatory and ...
(Date:6/23/2016)... NEW YORK , June, 23, 2016  The ... students to envision new ways to harness living systems ... of Modern Art (MoMA) in New York ... more than 130 participating students, showcased projects at MoMA,s ... included Paola Antonelli , MoMA,s senior curator of ...
(Date:6/23/2016)... ... June 23, 2016 , ... Supplyframe, the Industry Network ... Supplyframe Design Lab . Located in Pasadena, Calif., the Design Lab’s mission is ... projects are designed, built and brought to market. , The Design Lab is ...
(Date:6/23/2016)... ... ... In a new case report published today in STEM CELLS Translational Medicine, ... after being treated for breast cancer benefitted from an injection of stem cells derived ... debilitating, frequent side effect of cancer treatment. , Lymphedema refers to the ...
Breaking Biology Technology:
Cached News: