DESIGN AND SYNTHESIS OF THE NEXT GENERATION OF CROWN ETHERS FOR WASTE SEPARATIONS: AN INTER-LABORATORY COMPREHENSIVE PROPOSAL

Moyer, Bruce A.

Oak Ridge National Laboratory

关键词: Synthesis;    Hydroxides;    Solvent Extraction;    37 Inorganic, Organic, Physical And Analytical Chemistry;    Simulation;   

DOI  :  10.2172/827375
RP-ID  :  EMSP-55087
RP-ID  :  827375

美国|英语

来源: UNT Digital Library

【 摘 要 】

The objectives of this project were to develop the techniques, materials, and fundamental understanding necessary to solve difficult separations problems of the USDOE in the 21st century. The specific goals included developing new, powerful molecular modeling tools for ligand design, performing computational and structural studies to reveal fundamental properties of ligand-metal ion interactions, studying solvent extraction behavior to provide basic understanding of solution speciation and equilibria, and preparing new ion-exchange resins for the separation of metal ions of environmental significance to the USDOE. Contaminants of special interest included alkali and alkaline-earth metal ions, especially, lithium, cesium, and strontium. For example, Li+ ions contaminate the groundwater at the Oak Ridge Y-12 Plant; Cs+ and Sr2+ represent fission products in groundwater (e.g., INEEL, Hanford), stored waste (e.g., Savannah River Site, Hanford tanks), and process-water streams (e. g., ORNL).