Author:
Wang Jianchen,Jing Shan,Chen Jing
Abstract
Abstract
Chinese HLLW with a higher-salt liquid that was generated via plutonium uranium recovery by extraction (PUREX) processing was
temporarily stored in stainless steel tanks and is waiting for treatment. The volume and heat-loading of the glass block are reduced if
the strontium, cesium, actinides and other long-life radioactive elements, such as Tc in the HLLW, are partitioned before the HLLW
verification. This process is beneficial to preserve the capacity of the geological disposal repository and to minimize long-term
hazards. The process of partitioning strontium from Chinese HLLW using Dicyclohexano-18Crown-6(DCH18C-6) was developed in past decades,
including such fundamental studies as the small scale cold and hot test. In this work, new studies are introduced, including the cold
and the long time hot cascade tests, using a miniature centrifugal contactor set and the pilot-scale cold test using pulse extraction
columns. The results indicate that the crown process is promising for partitioning strontium from Chinese HLLW.
Subject
Physical and Theoretical Chemistry
Cited by
10 articles.
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