New crystalline silicotitanate (CST) waste forms: Hydrothermal synthesis and characterization of CS-SI-TI-0 phases

M. Nyman, T. M. Nenoff, Y. Sir, M. L. Balmer, A. Navrotsky, H. Xu

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The radioactivity of the Hanford site waste tanks is primarily from '"Cs and wSr, of which can both be selectively removed from solution using a crystalline silicotitanate (CST) ion exchanger. We are currently seeking waste forms alternative to borosilicate glass for CsCSTs. In order to obtain a fundamental basis for the development of an alternative waste form, we are investigating synthesis and characterization of CST component phases, namely Cs-Si-Ti-O phases. Two novel Cs-Ti-Si-O phases (one porous, one condensed) have been hydrothermally synthesized, characterized and evaluated as waste form candidates based on chemical and thermal stability, leachability, and ion exchange capabilities.

Original languageEnglish (US)
Pages (from-to)71-76
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume556
StatePublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'New crystalline silicotitanate (CST) waste forms: Hydrothermal synthesis and characterization of CS-SI-TI-0 phases'. Together they form a unique fingerprint.

Cite this