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Titolo:
TEMPERATURE EFFECTS ON THE LEACHING BEHAVIOR OF A HIGH-LEVEL WASTE GLASS FORM
Autore:
SHENG JW; LUO SG; TANG BL;
Indirizzi:
KOREA ELECT POWER RES INST,RADIAT SAFETY GRP,YUSONG GU,103-16 TAEJON 305380 SOUTH KOREA CHINA INST ATOM ENERGY BEIJING 102413 PEOPLES R CHINA
Titolo Testata:
Nuclear technology
fascicolo: 3, volume: 123, anno: 1998,
pagine: 296 - 303
SICI:
0029-5450(1998)123:3<296:TEOTLB>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Keywords:
HIGH-LEVEL WASTE GLASS; TEMPERATURE LEACHING BEHAVIOR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
22
Recensione:
Indirizzi per estratti:
Citazione:
J.W. Sheng et al., "TEMPERATURE EFFECTS ON THE LEACHING BEHAVIOR OF A HIGH-LEVEL WASTE GLASS FORM", Nuclear technology, 123(3), 1998, pp. 296-303

Abstract

Temperature has strong effects on the leaching behavior of the 90-19/U simulated high-level waste glass form. The Arrhenius equation is used to determine the change in the glass corrosion mechanism throughout the different temperature ranges. The apparent activation energies have been obtained for different leaching conditions. in deionized water;the glass corrosion mechanism is similar whether the leaching condition is static or dynamic. The glass corrosion process is dominated by the ion exchange reactions at lower temperatures (less than or equal to60 to similar to 70 degrees C); however, the glass corrosion process is dominated by the network hydrolysis reactions at higher temperatures es (> 70 degrees C). The apparent activation energy in the lower temperature range is larger than that of the higher temperature range. Insimulated underground water the ion exchange reactions dominated the glass corrosion mechanism at temperatures P-om 50 to 150 degrees C, and the large amount of ions in simulated underground water would participate in the ion exchange reactions with the glass.

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Documento generato il 21/09/20 alle ore 15:09:16