Polyvinylpyridinium anion-exchangers for recovery of technetium and plutonium anions

Described are anion-exchange materials having extraordinarily high affinity for plutonium anions such as plutonium (IV), and technetium anions such as pertechnetate. Preferred inventive resins are highly divinylbenzene-crosslinked polyvinylpyridine resins exhibiting a macroreticular bead form, which...

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Bibliographische Detailangaben
Hauptverfasser:	MCQUIGG, DONALD W
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOSITIONS BASED THEREON DECONTAMINATION ARRANGEMENTS THEREFOR GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING TREATING RADIOACTIVELY CONTAMINATED MATERIAL
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Beschreibung
Zusammenfassung:	Described are anion-exchange materials having extraordinarily high affinity for plutonium anions such as plutonium (IV), and technetium anions such as pertechnetate. Preferred inventive resins are highly divinylbenzene-crosslinked polyvinylpyridine resins exhibiting a macroreticular bead form, which have been quaternized to contain a substantial amount of 1-alkyl-pyridinium groups wherein the alkyl group has 4 to 8 carbon atoms. The inventive resins can be used in preferred processes for recovering plutonium and/or technetium anions from aqueous mediums, for example nuclear waste streams or groundwater related to civilian or defense-related nuclear operations.