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首页> 外文会议>American Chemical Society >Fundamental Chemistry of the Universal Extraction Process for the Simultaneous Separation of Major Radionuclides (Cesium, Strontium, Actinides, and Lanthanides) from Radioactive Wastes
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Fundamental Chemistry of the Universal Extraction Process for the Simultaneous Separation of Major Radionuclides (Cesium, Strontium, Actinides, and Lanthanides) from Radioactive Wastes

机译：普遍提取过程的基本化学与放射性废物同时分离主要放射性核素（铯，锶，滑铀和镧）的同时分离

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Scientists at the Idaho National Laboratory and Khlopin Radium Institute collaboratively developed and validated the concept of a Universal Extraction (UNEX) process for simultaneously removing the major radionuclides (Cs, Sr, actinides, and lanthanides) from acidic radioactive waste in a single solvent extraction process. The UNEX solvent incorporates three active extractants: chlorinated cobalt dicarbollide (CCD), polyethylene glycol (PEG), and diphenyl-jV.W-di-n-butylcarbamoylmethylphosphine oxide (CMPO), dissolved in a suitable organic diluent to simultaneously extract target radionuclides. The process chemistry is unique, but complicated, since the extractants operate synergistically to extract the major radionuclides. Furthermore, interactions with the diluent are quite important as the diluent strongly influences the extraction properties of the solvent system. We are studying the fundamental chemical phenomena responsible for the selective extraction of the different species to understand the underlying mechanisms and facilitate enhancements in process chemistry, Our efforts to date have relied on a combination of classical chemistry techniques, IR spectroscopy, and NMR spectroscopy to identify and explain the structures formed in the organic phase, elucidate the operative chemical mechanisms, and evaluate the diluent effects on extraction properties.
机译：爱达荷州国家实验室和Khlopin镭学院的科学家合作开发并验证了普遍提取（UNEX）过程的概念，同时从单一溶剂提取过程中从酸性放射性废物中除去主要放射性核素（Cs，Sr，散氨和镧系）的概念。 UNEX溶剂包含三种活性萃取剂：氯化钴果胶（CCD），聚乙二醇（PEG）和二苯基-JV.W-DI-正丁基氨基甲酰甲基膦（CMPO），溶解在合适的有机稀释剂中以同时提取靶放射性核素。该方法化学是独特的，但复杂，因为萃取剂协同操作以提取主要放射性核素。此外，与稀释剂的相互作用非常重要，因为稀释剂强烈影响溶剂体系的提取性能。我们正在研究负责选择性提取不同物种的基本化学现象，以了解过程化学的潜在机制，促进增强，我们迄今为止的努力依赖于古典化学技术，红外光谱和NMR光谱的组合来识别并解释在有机相中形成的结构，阐明操作化学机制，并评估对萃取性能的稀释作用。

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