LUCA, Vittorio; SIZGEK, Devlet; SIZGEK, Erden; ARRACHART, Guilhem; REY, Cyrielle; SCALES, Nicholas; ALY, Zaynab; DRISKO, Glenna

doi:10.3390/nano9101464

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LUCA, Vittorio
Comisión Nacional de Energía Atómica [ARGENTINA] [CNEA]

SIZGEK, Devlet
A CSIRO Materials Science and Engineering

SIZGEK, Erden
A CSIRO Materials Science and Engineering

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Nanomaterials. 2019, vol. 9, n° 10, p. 1464 (11 p.)

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Structured carbon adsorbents were prepared by carbonizing macroporous polyacrylonitrile beads whose pores were lined with a mesoporous phenolic resin. After activation, the beads were tested for minor actinide (Np and Am), major actinide (Pu and U) and lanthanide (Gd) adsorption in varying acidic media. The activation of the carbon with ammonium persulfate increased the surface adsorption of the actinides, while decreasing lanthanide adsorption. These beads had a pH region where Pu could be selectively extracted. Pu is one of the longest lived, abundant and most radiotoxic components of spent nuclear fuel and thus, there is an urgent need to increase its security of storage. As carbon has a low neutron absorption cross-section, these beads present an affordable, efficient and safe means for Pu separation from nuclear waste.< Réduire

Mots clés en anglais

Actinide and lanthanide sorption

Carbon

Hierarchical pore structures

Polyacrylonitrile

Phenolic resin

actinide and lanthanide sorption

carbon

hierarchical pore structures

polyacrylonitrile

phenolic resin

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Actinide and lanthanide adsorption onto hierarchically porous carbons beads: a high surface affinity for Pu

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