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:
TAG: Zirconate material will improve plutonium storage safety

(Date:5/19/2015)... 2015 Research and ... of the  "Genetic Testing Market Outlook 2018" ... , ,A recent report, Genetic Testing Market ... the current and future genetic testing market. ... working principles and types are covered in ...
(Date:5/14/2015)... , May 14, 2015  Verificient ... identity verification and online remote proctoring, announced ... software-as-a-service (SaaS) company and creator of the ... of the two companies will benefit from ... Canvas. As a fully integrated ...
(Date:5/11/2015)... -- Curemark LLC, a privately held drug research and ... III double blind, randomized, placebo-controlled clinical trial to examine ... children ages 3-8 with Autism. Previously, Curemark announced the ... clinical trial for CM-AT in children ages 3-8 with ... chymotrypsin. This new trial will help determine whether all ...
Breaking Biology News(10 mins):Global Genetic Testing Market Outlook 2018 2Verificient and Instructure Announce Alliance Partnership to Provide Online Proctoring for K-12 and Higher Education Institutions 2Curemark, LLC, Launches New Phase III Trial in Expanded Population of Children with Autism 2
(Date:5/27/2015)... , May 26, 2015 Research ... of the "Global Breast Cancer Monoclonal Antibodies ... Globally, Roche seems to dominate the ... inventory. Its block buster molecule, Herceptin has been ... It was found that breast cancer cells become ...
(Date:5/27/2015)... Fla. (PRWEB) May 27, 2015 Expanding ... dental cement manufacturer Avalon Biomed Inc. recently ... of Mokuda Dental Co. Ltd. , the largest ... inroad into the international market for Avalon Biomed, which ... Plus®, award-winning tricalcium silicate-based dental cements that have won ...
(Date:5/27/2015)... Israel , May 27, 2015  Tikcro Technologies ... quarter ended March 31, 2015. ... quarter, we continued pre-clinical work to generate functional specific ... an early stage, we are encouraged by the development ... field as new antibodies which modulate immune checkpoints gain ...
(Date:5/27/2015)... MB (PRWEB) May 27, 2015 ... data to combat disease, Cubresa Inc. today announced ... “Our MR Compatible in-bore PET Scanner uses silicon ... into single-purpose preclinical MRI machines from manufacturers like ... Cubresa, headquartered in Winnipeg, Canada. “This enables simultaneous ...
Breaking Biology Technology:Global Breast Cancer Monoclonal Antibodies Market Outlook 2020 2Global Breast Cancer Monoclonal Antibodies Market Outlook 2020 3Dental Manufacturer Avalon Biomed Inks Major Deal with Japanese Distributor 2Dental Manufacturer Avalon Biomed Inks Major Deal with Japanese Distributor 3Tikcro Technologies Reports First Quarter 2015 Results 2Tikcro Technologies Reports First Quarter 2015 Results 3Cubresa Launches Simultaneous PET/MRI Technology 2
Cached News: