METHOD FOR RECOVERING TRANSURANIUM ELEMENT FROM SPENT NUCLEAR FUEL
PROBLEM TO BE SOLVED: To simplify the recovery step of transuraunium element and reduce waste solvent and wastes. SOLUTION: A spent nuclear fuel is dissolved in a nitrate acid (S100), the dissolved liquid is subject to electrolitic oxidation, and U, Np, Pu, and Am are oxidized at hexa valence by usi...
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| creator | KIHARA YOSHIYUKI TSUDOKORO AKIO OKADA TAKASHI |
| description | PROBLEM TO BE SOLVED: To simplify the recovery step of transuraunium element and reduce waste solvent and wastes. SOLUTION: A spent nuclear fuel is dissolved in a nitrate acid (S100), the dissolved liquid is subject to electrolitic oxidation, and U, Np, Pu, and Am are oxidized at hexa valence by using Ce as an oxidizing catalyst, and further they are cooled to crystallize a hexavalent nitrate salt and separate it from a mother liquor (S104). The mother liquor is heated and condensed (S114). The separated mixed deposit is dissolved in a nitrate once (S106) and only an uranyl nitrate is deposited by cooling it (S108), and then it is separated from a mixing liquid of U, Np, Pu, and Am (S110). The uranyl nitrate is dissolved in a nitrate acid (S112). The nitrate solution is added with the heated and condensed mother liquor to prepare a mixing solution. The mixing solution is electrolytically oxidixed so as to oxidize the remaining U, Np, Pu, and Am at hexa valence and cool them, thereby precipitate the remaining U, Np, Pu, and Am together thanks to uranyl nitrate and separating them from high-level radiation waste. |
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SOLUTION: A spent nuclear fuel is dissolved in a nitrate acid (S100), the dissolved liquid is subject to electrolitic oxidation, and U, Np, Pu, and Am are oxidized at hexa valence by using Ce as an oxidizing catalyst, and further they are cooled to crystallize a hexavalent nitrate salt and separate it from a mother liquor (S104). The mother liquor is heated and condensed (S114). The separated mixed deposit is dissolved in a nitrate once (S106) and only an uranyl nitrate is deposited by cooling it (S108), and then it is separated from a mixing liquid of U, Np, Pu, and Am (S110). The uranyl nitrate is dissolved in a nitrate acid (S112). The nitrate solution is added with the heated and condensed mother liquor to prepare a mixing solution. The mixing solution is electrolytically oxidixed so as to oxidize the remaining U, Np, Pu, and Am at hexa valence and cool them, thereby precipitate the remaining U, Np, Pu, and Am together thanks to uranyl nitrate and separating them from high-level radiation waste.</description><edition>6</edition><language>eng</language><subject>APPARATUS THEREFOR ; CHEMISTRY ; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT ; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F ; DECONTAMINATION ARRANGEMENTS THEREFOR ; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; INORGANIC CHEMISTRY ; METALLURGY ; NUCLEAR ENGINEERING ; NUCLEAR PHYSICS ; NUCLEAR REACTORS ; 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 ; TREATING RADIOACTIVELY CONTAMINATED MATERIAL</subject><creationdate>1998</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19981023&DB=EPODOC&CC=JP&NR=H10282293A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19981023&DB=EPODOC&CC=JP&NR=H10282293A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KIHARA YOSHIYUKI</creatorcontrib><creatorcontrib>TSUDOKORO AKIO</creatorcontrib><creatorcontrib>OKADA TAKASHI</creatorcontrib><title>METHOD FOR RECOVERING TRANSURANIUM ELEMENT FROM SPENT NUCLEAR FUEL</title><description>PROBLEM TO BE SOLVED: To simplify the recovery step of transuraunium element and reduce waste solvent and wastes. 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The mixing solution is electrolytically oxidixed so as to oxidize the remaining U, Np, Pu, and Am at hexa valence and cool them, thereby precipitate the remaining U, Np, Pu, and Am together thanks to uranyl nitrate and separating them from high-level radiation waste.</description><subject>APPARATUS THEREFOR</subject><subject>CHEMISTRY</subject><subject>CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT</subject><subject>COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F</subject><subject>DECONTAMINATION ARRANGEMENTS THEREFOR</subject><subject>ELECTROLYTIC OR ELECTROPHORETIC PROCESSES</subject><subject>ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS</subject><subject>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</subject><subject>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</subject><subject>INORGANIC CHEMISTRY</subject><subject>METALLURGY</subject><subject>NUCLEAR ENGINEERING</subject><subject>NUCLEAR PHYSICS</subject><subject>NUCLEAR REACTORS</subject><subject>PHYSICS</subject><subject>PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT</subject><subject>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</subject><subject>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</subject><subject>TREATING RADIOACTIVELY CONTAMINATED MATERIAL</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1998</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZHDydQ3x8HdRcPMPUghydfYPcw3y9HNXCAly9AsOBRKeob4Krj6uvq5-IQpuQf6-CsEBIKZfqLOPq2OQgluoqw8PA2taYk5xKi-U5mZQdHMNcfbQTS3Ij08tLkhMTs1LLYn3CvAwNDCyMDKyNHY0JkYNACWKK6Q</recordid><startdate>19981023</startdate><enddate>19981023</enddate><creator>KIHARA YOSHIYUKI</creator><creator>TSUDOKORO AKIO</creator><creator>OKADA TAKASHI</creator><scope>EVB</scope></search><sort><creationdate>19981023</creationdate><title>METHOD FOR RECOVERING TRANSURANIUM ELEMENT FROM SPENT NUCLEAR FUEL</title><author>KIHARA YOSHIYUKI ; TSUDOKORO AKIO ; OKADA TAKASHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH10282293A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1998</creationdate><topic>APPARATUS THEREFOR</topic><topic>CHEMISTRY</topic><topic>CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT</topic><topic>COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F</topic><topic>DECONTAMINATION ARRANGEMENTS THEREFOR</topic><topic>ELECTROLYTIC OR ELECTROPHORETIC PROCESSES</topic><topic>ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS</topic><topic>GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC</topic><topic>GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS</topic><topic>INORGANIC CHEMISTRY</topic><topic>METALLURGY</topic><topic>NUCLEAR ENGINEERING</topic><topic>NUCLEAR PHYSICS</topic><topic>NUCLEAR REACTORS</topic><topic>PHYSICS</topic><topic>PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT</topic><topic>TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS</topic><topic>TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE</topic><topic>TREATING RADIOACTIVELY CONTAMINATED MATERIAL</topic><toplevel>online_resources</toplevel><creatorcontrib>KIHARA YOSHIYUKI</creatorcontrib><creatorcontrib>TSUDOKORO AKIO</creatorcontrib><creatorcontrib>OKADA TAKASHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KIHARA YOSHIYUKI</au><au>TSUDOKORO AKIO</au><au>OKADA TAKASHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>METHOD FOR RECOVERING TRANSURANIUM ELEMENT FROM SPENT NUCLEAR FUEL</title><date>1998-10-23</date><risdate>1998</risdate><abstract>PROBLEM TO BE SOLVED: To simplify the recovery step of transuraunium element and reduce waste solvent and wastes. SOLUTION: A spent nuclear fuel is dissolved in a nitrate acid (S100), the dissolved liquid is subject to electrolitic oxidation, and U, Np, Pu, and Am are oxidized at hexa valence by using Ce as an oxidizing catalyst, and further they are cooled to crystallize a hexavalent nitrate salt and separate it from a mother liquor (S104). The mother liquor is heated and condensed (S114). The separated mixed deposit is dissolved in a nitrate once (S106) and only an uranyl nitrate is deposited by cooling it (S108), and then it is separated from a mixing liquid of U, Np, Pu, and Am (S110). The uranyl nitrate is dissolved in a nitrate acid (S112). The nitrate solution is added with the heated and condensed mother liquor to prepare a mixing solution. The mixing solution is electrolytically oxidixed so as to oxidize the remaining U, Np, Pu, and Am at hexa valence and cool them, thereby precipitate the remaining U, Np, Pu, and Am together thanks to uranyl nitrate and separating them from high-level radiation waste.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | APPARATUS THEREFOR CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F DECONTAMINATION ARRANGEMENTS THEREFOR ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INORGANIC CHEMISTRY METALLURGY NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS 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 TREATING RADIOACTIVELY CONTAMINATED MATERIAL |
| title | METHOD FOR RECOVERING TRANSURANIUM ELEMENT FROM SPENT NUCLEAR FUEL |
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