Alteration of CsAlSiO4 in hydrothermal fluids

Sridhar Komarneni, William B. White

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

CsAlSiO4, one of the hosts for the immobilization of Cs from nuclear wastes, altered extensively in solutions of low and high cationic activity under mild hydrothermal conditions which may be expected in a radwaste repository. For example, the CsAlSi04 phase changed to pollucite and chlorite in deionized water and 3 n MgCl2 brine, respectively, releasing 1.3% to 98.6% of its Cs into solution at temperatures of 100-300 °C for 4 weeks under a confining pressure of 300 bar. These and earlier results indicate that under radwaste repository conditions pollucite is a stable phase but not the CsAlSiO4 phase and, therefore, CsAlSiO4 is not a good host for the immobilization of Cs from nuclear wastes.

Original languageEnglish (US)
Pages (from-to)169-172
Number of pages4
JournalNuclear and Chemical Waste Management
Volume3
Issue number3
DOIs
StatePublished - Jan 1 1982

Fingerprint

Radioactive wastes
hydrothermal fluid
repository
radioactive waste
immobilization
Fluids
Deionized water
confining pressure
brine
chlorite
temperature
water
Temperature

All Science Journal Classification (ASJC) codes

  • Waste Management and Disposal
  • Environmental Science(all)
  • Pollution
  • Earth and Planetary Sciences(all)

Cite this

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Alteration of CsAlSiO4 in hydrothermal fluids. / Komarneni, Sridhar; White, William B.

In: Nuclear and Chemical Waste Management, Vol. 3, No. 3, 01.01.1982, p. 169-172.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Komarneni, Sridhar

AU - White, William B.

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