核化学与放射化学2018，Vol.40Issue(2)：105-111,7.DOI:10.7538/hhx.2018.YX.2017018
三烷基氧膦对硝酸介质中钌的萃取行为
Extraction of Ruthenium From Nitric Acid Medium by Trialkylphosphine Oxide
章燕 1浦宁 2夏良树 2徐超 1陈靖2
作者信息
- 1. 南华大学 核科学技术学院,湖南 衡阳 421001
- 2. 清华大学 核能与新能源技术研究院,北京 100084
- 折叠
摘要
Abstract
The extraction of ruthenium from nitric acid medium by trialkylphosphine oxide (TRPO)was studied under a variety of experimental conditions.The influence factors such as contacting time,nitric acid concentration,temperature,TRPO concentration,etc.,on the extraction behavior were systematically investigated.Three-stage cross-current extractions were further conducted to reveal the extraction behavior.Moreover,the stripping of rutheni-um from the loaded organic phase by nitric acid was also studied.The results from this study indicate that the thermodynamics and kinetics of the speciation and chemical equilibrium of ruthenium in nitric acid medium are quite interactive and thus resulting in complicated extrac-tion behaviors.Furthermore,the extraction of ruthenium from a series of simulated HLLW was conducted and the results provide additional information for the optimization of TRPO process regarding the decontamination of ruthenium from HLLW.关键词
钌/萃取/三烷基氧膦/高放废液Key words
ruthenium/extraction/TRPO/high level liquid waste分类
化学化工引用本文复制引用
章燕,浦宁,夏良树,徐超,陈靖..三烷基氧膦对硝酸介质中钌的萃取行为[J].核化学与放射化学,2018,40(2):105-111,7.
