核化学与放射化学2025，Vol.47Issue(5)：525-529,5.DOI:10.7538/hhx.2025.47.05.0525
Me-TODGA萃取模拟高放废液中的An(Ⅲ)与Ln(Ⅲ)
Extraction of An(Ⅲ)and Ln(Ⅲ)From Simulated High Level Liquid Waste by Me-TODGA
刘栎锟 1谢书宝 1马克 1叶国安1
作者信息
- 1. 中国原子能科学研究院放射化学研究所,北京 102413
- 折叠
摘要
Abstract
N,N,N',N'-tetraoctyl-3-oxapentanediamide(TODGA)is the most studied extractant among diglycolamides,but its extraction ability for An(Ⅲ)and Ln(Ⅲ)is too strong,making the stripping of An(Ⅲ)and Ln(Ⅲ)is difficult.In this paper,a novel diglycolamides process employing N,N,N',N'-tetraoctyl-2-methyl-3-oxapentanediamide(Me-TODGA)was designed as the extractant.The process was verified using simulated high level liquid waste(SHLLW).The results show that the extraction rate of trivalent and tetravalent metal ions exceeds 99.5％after 6-stage extraction and 10-stage scrubbing.After 16-stage stripping with 0.3 mol/L nitric acid,the stripping rates of An(Ⅲ)and Ln(Ⅲ)are over 95％,the stripping rate of Zr4+is 68.0％,and the concentrations of other metal ions are all lower than 2.1％of the initial concentration.This process enables efficient stripping of An(Ⅲ)and Ln(Ⅲ)under higher acidity(0.3 mol/L nitric acid),which reduces the generation of interfacial crud,and provides basic data for the design and application of the diglycolamides process.关键词
酰胺荚醚/分离提取/An(Ⅲ)/Ln(Ⅲ)/模拟高放废液Key words
diglycolamides/extraction separation/actinide(Ⅲ)/lanthanide(Ⅲ)/simulated high level li-quid waste分类
核科学引用本文复制引用
刘栎锟,谢书宝,马克,叶国安..Me-TODGA萃取模拟高放废液中的An(Ⅲ)与Ln(Ⅲ)[J].核化学与放射化学,2025,47(5):525-529,5.
