Published 2008
| Version v1
Journal article
Application of technology of self-propagating high-temperature synthesis (SHS) for immobilization of high-level radioactive wastes into mineral-like ceramics. 2. Immobilization of cesium in ceramics on the basis of perovskite and zirconolite
- 1. RAN, Inst. Strukturnoj Mikrokinetiki i Problem Materialovedeniya, Chernogolovka (Russian Federation)
Description
Immobilization of Cs in ceramics based on perovskite and zirconolite by self-propagating high-temperature synthesis (SHS) was studied using model systems. The ceramics was obtained as cylindrical blocks. Cesium can be completely immobilized in ceramics at 1250 deg C in the form of synthetic mineral pollucite and, in this case, it is uniformly distributed through the bulk of the ceramic sample. The optimal synthetic conditions were determined, and the phase composition of the ceramics was evaluated. The leaching rates of Cs from ceramics in double-distilled water at 20 deg C were determined
Abstract (Russian)
На модельных системах изучена возможность иммобилизации Cs в керамике на основе перовскита и цирконолита, получаемой в режиме самораспространяющегося высокотемпературного синтеза (СВС). Керамика получена в виде цилиндрических блоков. Показано, что Cs может быть полностью закреплен в составе керамики при 1250 град С в виде синтетического аналога минерала поллуцита. Установлено равномерное распределение Cs по объему синтезированного образца. Определены оптимальные условия синтеза и изучен фазовый состав керамики. Определены скорости выщелачивания Cs в бидистиллированную воду при 20 град СAdditional details
Additional titles
- Original title (Russian)
- Использование технологии самораспространяющегося высокотемпературного синтеза (SVS) для иммобилизации высикоактивных отходов в минералоподобную керамику. 2. Иммобилизация стезия в керамике на основе перовскита и цирконолита
Publishing Information
- Journal Title
- Radiokhimiya
- Journal Volume
- 50
- Journal Issue
- 3
- Journal Page Range
- p. 279-281
- ISSN
- 0033-8311
- CODEN
- RADKAU
INIS
- Country of Publication
- Russian Federation
- Country of Input or Organization
- Russian Federation
- INIS RN
- 39117687
- Subject category
- S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Descriptors DEI
- CERAMICS; CESIUM COMPOUNDS; CHEMICAL PREPARATION; DISTRIBUTION; HIGH-LEVEL RADIOACTIVE WASTES; MATRIX MATERIALS; SOLIDIFICATION; SOLUBILITY; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 1000-4000 K
- Descriptors DEC
- ALKALI METAL COMPOUNDS; MATERIALS; PHASE TRANSFORMATIONS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; SYNTHESIS; TEMPERATURE RANGE; WASTES
Optional Information
- Notes
- 6 refs., 4 figs., 1 tab.