There is still an evident need for selective and stable ligands able to separate actinide(III) from lanthanide(III) metal ions in view of the treatment of the accumulated radioactive waste and of the recycling of minor actinides. We have herein demonstrated that hydrophilic 2,6-bis-triazolyl-pyridines are able to strip all actinides in all the different oxidation states from a diglycolamide-containing kerosene solution into an acidic aqueous phase. The ascertained high actinide selectivity, efficiency, extraction kinetics, and chemical/radiolytic stability spotlight this hydrophilic class of ligands as exceptional candidates for advanced separation processes fundamental for closing the nuclear fuel cycle and solving the environmental issues related to the management of existing nuclear waste.

Hydrophilic Clicked 2,6-Bis-Triazolyl-pyridines Endowed with High Actinide Selectivity and Radiochemical Stability: Toward a Closed Nuclear Fuel Cycle

MACERATA, ELENA;MOSSINI, EROS;SCARAVAGGI, STEFANO;MARIANI, MARIO;MELE, ANDREA;
2016

Abstract

There is still an evident need for selective and stable ligands able to separate actinide(III) from lanthanide(III) metal ions in view of the treatment of the accumulated radioactive waste and of the recycling of minor actinides. We have herein demonstrated that hydrophilic 2,6-bis-triazolyl-pyridines are able to strip all actinides in all the different oxidation states from a diglycolamide-containing kerosene solution into an acidic aqueous phase. The ascertained high actinide selectivity, efficiency, extraction kinetics, and chemical/radiolytic stability spotlight this hydrophilic class of ligands as exceptional candidates for advanced separation processes fundamental for closing the nuclear fuel cycle and solving the environmental issues related to the management of existing nuclear waste.
actinide/lanthanide partitioning, closed nuclear fuel cycle,
File in questo prodotto:
File Dimensione Formato  
PRODOTTO 1_POST PRINT OPEN ACCESS.pdf

accesso aperto

Descrizione: post print open access
: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 224.28 kB
Formato Adobe PDF
224.28 kB Adobe PDF Visualizza/Apri
prod1_168_JACS2016-138_7232_7235.pdf

Accesso riservato

: Publisher’s version
Dimensione 546.15 kB
Formato Adobe PDF
546.15 kB Adobe PDF   Visualizza/Apri
Prodotto1_Supporting Information.pdf

accesso aperto

: Post-Print (DRAFT o Author’s Accepted Manuscript-AAM)
Dimensione 64 kB
Formato Adobe PDF
64 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/995084
Citazioni
  • ???jsp.display-item.citation.pmc??? 6
  • Scopus 92
  • ???jsp.display-item.citation.isi??? 87
social impact