РОССИЙСКАЯ АКАДЕМИЯ НАУК

УРАЛЬСКОЕ ОТДЕЛЕНИЕ

ИНСТИТУТ ХИМИИ TBEPДОГО ТЕЛА
   
| | | | |
| | | |
 31.10.2012   Карта сайта     Language По-русски По-английски
Новые материалы
Экология
Электротехника и обработка материалов
Медицина
Статистика публикаци


31.10.2012




Materials Today

Volume 15, Issue 10, October 2012, Pages 425






News

Glassy solution to nuclear waste: Energy







Intermediate level nuclear waste could be stored safely and efficiently using technology usually reserved for high level waste, according to research from the University of Sheffield. Currently, the UK encapsulates “ILW”, which accounts for more than 75 % of nuclear waste, in a cement-like material, seals the composite in steel drums and stores it pending burial deep underground.


Sheffield's Neil Hyatt and colleagues in Sheffield and at the J. Stefan Institute, in Ljubljana, Slovenia and the University of Manchester's Dalton Cumbrian Facility in Moor Row, have now published two papers outlining how ILW might be turned into a durable glass material. Studies in 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, produces a material for safer long-term storage, transport and disposal [Hyatt, N.C. et al., Eur J Glass Sci Technol A(2012)53(3) 83-100; J Nucl Mater (2012) doi: 10.1016/j.jnucmat.2012.04.007]. Vitrification is already used to reduce the reactivity and volume of HLW. But there are greater volumes of ILW, which until now were not thought amenable to this process.


The researchers have tested mock ILW materials having a similar physical and chemical makeup to radioactive waste but containing none of the hazardous radio-isotopes. The vitrification process itself is relatively straightforward involving drying of the material, mixing with glass-forming compounds including iron oxide or sodium carbonate, and then heating to produce a glass that can be poured into a container. For some nuclear waste, including contaminated sand, the waste itself is its own glass-forming material.


Critically for the development of vitrification of ILW, the researchers have demonstrated that the products are highly resistant to damage from energetic gamma rays that would be produced in situ as the radioactive materials decay.


“We found that gamma irradiation produced no change in the physical properties of these glasses, and no evidence that the residual radiation caused defects,” explains 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.” Hyatt suggests that vitrification could offer improved safety and cost effectiveness over earlier approaches to handling ILW from decommissioned nuclear sites.










 







Дизайн и программирование N-Studio 
А Б В Г Д Е Ё Ж З И Й К Л М Н О П Р С Т У Ф Х Ц Ч Ш Щ Ъ Ы Ь Э Ю Я
  • Chen Wev .  honorary member of ISSC science council

  • Harton Vladislav Vadim  honorary member of ISSC science council

  • Lichtenstain Alexandr Iosif  honorary member of ISSC science council

  • Novikov Dimirtii Leonid  honorary member of ISSC science council

  • Yakushev Mikhail Vasilii  honorary member of ISSC science council

  • © 2004-2019 ИХТТ УрО РАН
    беременность, мода, красота, здоровье, диеты, женский журнал, здоровье детей, здоровье ребенка, красота и здоровье, жизнь и здоровье, секреты красоты, воспитание ребенка рождение ребенка,пол ребенка,воспитание ребенка,ребенок дошкольного возраста, дети дошкольного возраста,грудной ребенок,обучение ребенка,родить ребенка,загадки для детей,здоровье ребенка,зачатие ребенка,второй ребенок,определение пола ребенка,будущий ребенок медицина, клиники и больницы, болезни, врач, лечение, доктор, наркология, спид, вич, алкоголизм православные знакомства, православный сайт творчeства, православные рассказы, плохие мысли, православные психологи рождение ребенка,пол ребенка,воспитание ребенка,ребенок дошкольного возраста, дети дошкольного возраста,грудной ребенок,обучение ребенка,родить ребенка,загадки для детей,здоровье ребенка,зачатие ребенка,второй ребенок,определение пола ребенка,будущий ребенок