The behavior of technetium in technetium-scrubbing stage of PUREX process

被引：8

作者：

Liu, Fang ^{[1
]}

Zheng, Wei-fang ^{[1
]}

Zhang, Yu ^{[1
]}

Wang, Hui ^{[1
]}

Zhou, Chang-xin ^{[1
]}

机构：

[1] China Inst Atom Energy, Beijing 102413, Peoples R China

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2013年 / 295卷 / 03期

关键词：

Technetium scrubbing; Decontamination factor; PUREX process;

D O I：

10.1007/s10967-012-2205-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Technetium decontamination factor as a function of the acidity, flow ratio, scrubbing stage number was investigated by counter-current cascade experiments or mixer-settler batch tests. Results showed that the acidity of the scrubbing acid has little influence on the decontamination factor of technetium when the acidity was kept in the range of 4.5-6 M. The most effective method to increase the decontamination factor is to lower the feed-to-acid flow ratio. Keeping other condition same the factor increased to 10.3 from 3.1 when feed-to-acid ratio changed to 4 from 5.6. The loss of uranium and plutonium can be recovered through a re-extraction technology.

引用

页码：1621 / 1625

页数：5

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