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Czechoslovak Journal of Physics

, Volume 56, Issue 1, pp D589–D597 | Cite as

Study of solid extractants based on malonamides, diglycolamides, and bipyridines for the partitioning of minor actinides from high active wastes

  • J. Šul’aková
  • J. John
  • F. Šebesta
Chemistry Of Nuclear Fuel Cycle, Radiochemical Problems In Nuclear Waste Management

Abstract

In this work, the performance of the solid extractants with polyacrylonitrile (PAN) binding matrix was studied for the separation of lanthanides and actinides from nitric acid solutions. As extractants, incorporated into the PAN matrix, the N,N′-dimethyl-N,N′-dibutyltetradecylmalonamide (DMDBTDMA), N,N′-dimethyl-N,N′-dioctyl-hexy-loxyethylmalonamide (DMDOHEMA), N,N,N′,N′-tetraoctyldiglycolamide (TODGA), 6,6′-bis-(5,6-dipentyl-[1,2,4]triazin-3-yl[2,2′]bipyridinyl (C5BTBP) were used. Weight distribution coefficients Dg of europium and several actinides have been determined for all the composite materials. The kinetics of europium uptake, practical dynamic extraction capacities, and extraction isotherms were also determined. The results obtained revealed that the solid extractants studied are prospective for the partitioning of lanthanides and actinides from liquid radioactive wastes.

Keywords

Octanol Americium Nitric Acid Concentration Solid Extractant Minor Actinide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Institute of Physics, Academy of Sciences of the Czech Republic 2006

Authors and Affiliations

  • J. Šul’aková
    • 1
  • J. John
    • 1
  • F. Šebesta
    • 1
  1. 1.Centre for Radiochemistry and Radiation Chemistry, and Department of Nuclear ChemistryCzech Technical University in PraguePrague 1Czech Republic

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