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Filtration characteristics of slurry formed by denitration of simulated high-level liquid waste

  • Y. Kondo
Article

Abstract

Precipitate formation behavior in high-level liquid waste (HLLW) and its filtration characteristics were examined experimentally, using a simulated HLLW. The amount of precipitate formed by denitration became minimum, only at about 5% of Mo, Zr, Te and Ru, if the simulated HLLW was pre-heated until the total heat input exceeded 7.9·106 J/I HLLW before denitration or denitrated with the total heat input of more than 1.1·107 J/I HLLW. Under these conditions, a needle-shaped precipitate with 0.5≈1.0 μm diameter and 3≈5 μm length was formed. This precipitate can be separated easily by vacuum filtration. While, fine particles of about 0.1 μm diameter were precipitated during denitration, if the simulated HLLW was denitrated under the conditions the amount of newly formed precipitate was not minimum. It was difficult to separate the fine particles by vacuum filtration.

Keywords

Physical Chemistry Filtration Total Heat Inorganic Chemistry Fine Particle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1995

Authors and Affiliations

  • Y. Kondo
    • 1
  1. 1.Department of Chemistry and Fuel Research, Tokai Research EstablishmentJapan Atomic Energy Research InstituteNaka-gun, Ibaraki-kenJapan

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