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Statements

Subject Item
n2:RIV%2F00216224%3A14740%2F12%3A00066432%21RIV14-GA0-14740___
rdf:type
n3:Vysledek skos:Concept
dcterms:description
In this work, we examined feasibility of sonochemical precipitation of lanthanide and uranyl ions from their solutions in organic solvents, such as tetraglyme and triethylphosphate, with the aim of potentially using this procedure for removing radioactive elements from nuclear waste streams. The precipitated compounds should be easily converted to highly insoluble waste forms, such as mixed metal oxides and phosphates, for long-term deposition and safe storage. We used 2,4-pentanedionato (acac) complexes of lanthanide and uranyl ions as initial surrogate models for radionuclides and by sonolysis obtained amorphous precipitates that were converted to particular oxides and phosphates by calcination. All obtained precipitates were characterized by ICP-OES elemental analyses for metal content, nitrogen adsorption/desorption isotherms for surface areas, IR spectroscopy for the identification of residual organic groups, and by SEM images. In this work, we examined feasibility of sonochemical precipitation of lanthanide and uranyl ions from their solutions in organic solvents, such as tetraglyme and triethylphosphate, with the aim of potentially using this procedure for removing radioactive elements from nuclear waste streams. The precipitated compounds should be easily converted to highly insoluble waste forms, such as mixed metal oxides and phosphates, for long-term deposition and safe storage. We used 2,4-pentanedionato (acac) complexes of lanthanide and uranyl ions as initial surrogate models for radionuclides and by sonolysis obtained amorphous precipitates that were converted to particular oxides and phosphates by calcination. All obtained precipitates were characterized by ICP-OES elemental analyses for metal content, nitrogen adsorption/desorption isotherms for surface areas, IR spectroscopy for the identification of residual organic groups, and by SEM images.
dcterms:title
Sonochemical Precipitation of Uranium and Lanthanide Oxides and Phosphates Sonochemical Precipitation of Uranium and Lanthanide Oxides and Phosphates
skos:prefLabel
Sonochemical Precipitation of Uranium and Lanthanide Oxides and Phosphates Sonochemical Precipitation of Uranium and Lanthanide Oxides and Phosphates
skos:notation
RIV/00216224:14740/12:00066432!RIV14-GA0-14740___
n3:predkladatel
n6:orjk%3A14740
n4:aktivita
n16:P
n4:aktivity
P(GAP207/11/0555)
n4:dodaniDat
n11:2014
n4:domaciTvurceVysledku
n8:4754832 n8:1111981 n8:2274329 n8:2451077
n4:druhVysledku
n17:O
n4:duvernostUdaju
n13:S
n4:entitaPredkladatele
n12:predkladatel
n4:idSjednocenehoVysledku
169259
n4:idVysledku
RIV/00216224:14740/12:00066432
n4:jazykVysledku
n18:eng
n4:klicovaSlova
Sonochemistry; Precipitation; Lanthanide oxides; Uranium oxide; Uranium phosphates
n4:klicoveSlovo
n7:Sonochemistry n7:Uranium%20oxide n7:Uranium%20phosphates n7:Lanthanide%20oxides n7:Precipitation
n4:kontrolniKodProRIV
[C4DF9DC93C99]
n4:obor
n15:CA
n4:pocetDomacichTvurcuVysledku
4
n4:pocetTvurcuVysledku
4
n4:projekt
n5:GAP207%2F11%2F0555
n4:rokUplatneniVysledku
n11:2012
n4:tvurceVysledku
Doroshenko, Iaroslav Moravec, Zdeněk Žůrková, Jana Pinkas, Jiří
n14:organizacniJednotka
14740