CA1064707A - Ferric ion as a scavenging agent in a solvent extraction process - Google Patents
Ferric ion as a scavenging agent in a solvent extraction processInfo
- Publication number
- CA1064707A CA1064707A CA249,303A CA249303A CA1064707A CA 1064707 A CA1064707 A CA 1064707A CA 249303 A CA249303 A CA 249303A CA 1064707 A CA1064707 A CA 1064707A
- Authority
- CA
- Canada
- Prior art keywords
- aqueous
- plutonium
- solution
- organic
- values
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000000034 method Methods 0.000 title claims abstract description 50
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910001447 ferric ion Inorganic materials 0.000 title claims abstract description 15
- 230000008569 process Effects 0.000 title claims description 40
- 238000000638 solvent extraction Methods 0.000 title abstract description 25
- 239000002516 radical scavenger Substances 0.000 title description 2
- 229910052778 Plutonium Inorganic materials 0.000 claims abstract description 33
- OYEHPCDNVJXUIW-UHFFFAOYSA-N plutonium atom Chemical compound [Pu] OYEHPCDNVJXUIW-UHFFFAOYSA-N 0.000 claims abstract description 31
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims abstract description 25
- 239000007857 degradation product Substances 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims description 26
- 229910052768 actinide Inorganic materials 0.000 claims description 21
- 150000001255 actinides Chemical class 0.000 claims description 21
- 239000012527 feed solution Substances 0.000 claims description 13
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(III) nitrate Inorganic materials [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 150000001768 cations Chemical class 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- FYNAIXQFLXHSFJ-UHFFFAOYSA-K dibutyl phosphate iron(3+) Chemical group [Fe+3].CCCCOP([O-])(=O)OCCCC.CCCCOP([O-])(=O)OCCCC.CCCCOP([O-])(=O)OCCCC FYNAIXQFLXHSFJ-UHFFFAOYSA-K 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 230000006872 improvement Effects 0.000 claims description 3
- AVXURJPOCDRRFD-UHFFFAOYSA-N hydroxylamine group Chemical group NO AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 claims 1
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 229940076400 plutonium Drugs 0.000 abstract description 32
- JYFHYPJRHGVZDY-UHFFFAOYSA-N Dibutyl phosphate Chemical group CCCCOP(O)(=O)OCCCC JYFHYPJRHGVZDY-UHFFFAOYSA-N 0.000 abstract description 16
- 229910052770 Uranium Inorganic materials 0.000 abstract description 13
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 abstract description 13
- 238000011084 recovery Methods 0.000 abstract description 11
- 238000000605 extraction Methods 0.000 abstract description 10
- 239000002244 precipitate Substances 0.000 abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 5
- 241000643898 Plutonium Species 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- 150000001212 Plutonium Chemical class 0.000 abstract description 2
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 229940093635 tributyl phosphate Drugs 0.000 description 14
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 12
- 229910017604 nitric acid Inorganic materials 0.000 description 12
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 12
- 239000012074 organic phase Substances 0.000 description 10
- 229910002651 NO3 Inorganic materials 0.000 description 9
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 8
- 239000008346 aqueous phase Substances 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- 229950005499 carbon tetrachloride Drugs 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 241000894007 species Species 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- -1 plutonium ions Chemical class 0.000 description 4
- WJWSFWHDKPKKES-UHFFFAOYSA-N plutonium uranium Chemical compound [U].[Pu] WJWSFWHDKPKKES-UHFFFAOYSA-N 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- BNMJSBUIDQYHIN-UHFFFAOYSA-N butyl dihydrogen phosphate Chemical compound CCCCOP(O)(O)=O BNMJSBUIDQYHIN-UHFFFAOYSA-N 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000012958 reprocessing Methods 0.000 description 3
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- LSPGXFXOXUGRDM-UHFFFAOYSA-L dibutyl phosphate;iron(2+) Chemical compound [Fe+2].CCCCOP([O-])(=O)OCCCC.CCCCOP([O-])(=O)OCCCC LSPGXFXOXUGRDM-UHFFFAOYSA-L 0.000 description 2
- 230000004992 fission Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- NILJXUMQIIUAFY-UHFFFAOYSA-N hydroxylamine;nitric acid Chemical compound ON.O[N+]([O-])=O NILJXUMQIIUAFY-UHFFFAOYSA-N 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003758 nuclear fuel Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910002007 uranyl nitrate Inorganic materials 0.000 description 2
- RELMFMZEBKVZJC-UHFFFAOYSA-N 1,2,3-trichlorobenzene Chemical compound ClC1=CC=CC(Cl)=C1Cl RELMFMZEBKVZJC-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- SQZYOZWYVFYNFV-UHFFFAOYSA-L iron(2+);disulfamate Chemical compound [Fe+2].NS([O-])(=O)=O.NS([O-])(=O)=O SQZYOZWYVFYNFV-UHFFFAOYSA-L 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 150000007530 organic bases Chemical class 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- FLDALJIYKQCYHH-UHFFFAOYSA-N plutonium(IV) oxide Inorganic materials [O-2].[O-2].[Pu+4] FLDALJIYKQCYHH-UHFFFAOYSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002915 spent fuel radioactive waste Substances 0.000 description 1
- USCBBUFEOOSGAJ-UHFFFAOYSA-J tetrafluoroplutonium Chemical compound F[Pu](F)(F)F USCBBUFEOOSGAJ-UHFFFAOYSA-J 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G56/00—Compounds of transuranic elements
- C01G56/001—Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
- C22B60/02—Obtaining thorium, uranium, or other actinides
- C22B60/0204—Obtaining thorium, uranium, or other actinides obtaining uranium
- C22B60/0217—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes
- C22B60/0252—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries
- C22B60/026—Obtaining thorium, uranium, or other actinides obtaining uranium by wet processes treatment or purification of solutions or of liquors or of slurries liquid-liquid extraction with or without dissolution in organic solvents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
- C22B60/02—Obtaining thorium, uranium, or other actinides
- C22B60/0291—Obtaining thorium, uranium, or other actinides obtaining thorium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
- C22B60/02—Obtaining thorium, uranium, or other actinides
- C22B60/0295—Obtaining thorium, uranium, or other actinides obtaining other actinides except plutonium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B60/00—Obtaining metals of atomic number 87 or higher, i.e. radioactive metals
- C22B60/02—Obtaining thorium, uranium, or other actinides
- C22B60/04—Obtaining plutonium
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/42—Reprocessing of irradiated fuel
- G21C19/44—Reprocessing of irradiated fuel of irradiated solid fuel
- G21C19/46—Aqueous processes, e.g. by using organic extraction means, including the regeneration of these means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Plasma & Fusion (AREA)
- Inorganic Chemistry (AREA)
- Extraction Or Liquid Replacement (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Manufacture And Refinement Of Metals (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/577,821 US3987145A (en) | 1975-05-15 | 1975-05-15 | Ferric ion as a scavenging agent in a solvent extraction process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1064707A true CA1064707A (en) | 1979-10-23 |
Family
ID=24310292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA249,303A Expired CA1064707A (en) | 1975-05-15 | 1976-03-31 | Ferric ion as a scavenging agent in a solvent extraction process |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3987145A (Direct) |
| JP (1) | JPS5214198A (Direct) |
| BE (1) | BE841665A (Direct) |
| CA (1) | CA1064707A (Direct) |
| DE (1) | DE2621795A1 (Direct) |
| FR (1) | FR2310968A1 (Direct) |
| GB (1) | GB1528415A (Direct) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4371504A (en) * | 1977-02-28 | 1983-02-01 | Uranium Recovery Corporation | Extractant and process for extracting uranium wet-process phosphoric acid |
| US4131527A (en) * | 1977-03-30 | 1978-12-26 | The United States Of America As Represented By The United States Department Of Energy | Method for selectively reducing plutonium values by a photochemical process |
| US4293529A (en) * | 1978-10-27 | 1981-10-06 | Uranium Recovery Corporation | Process for recovering uranium from wet-process phosphoric acid using alkyl pyrophosphoric acid extractants |
| US4385037A (en) * | 1980-05-16 | 1983-05-24 | Unc Recovery Corporation | Concentrated sulphuric acid treatment of an alkylphenyl acid phosphate extractant |
| US4652432A (en) * | 1981-02-26 | 1987-03-24 | Prodeco, Inc. | Process for recovering uranium using an alkyl pyrophosphoric acid and alkaline stripping solution |
| US4652431A (en) * | 1981-02-26 | 1987-03-24 | Prodeco, Inc. | Process for recovering uranium using an alkyl pyrophosphoric acid and alkaline stripping solution |
| JPS59231493A (ja) * | 1983-06-15 | 1984-12-26 | 住友金属鉱山株式会社 | 低レベル放射性廃液の処理方法 |
| GB8403724D0 (en) * | 1984-02-13 | 1984-03-14 | British Nuclear Fuels Plc | Treating nuclear fuel |
| US4595529A (en) * | 1984-03-13 | 1986-06-17 | The United States Of America As Represented By The Department Of Energy | Solvent wash solution |
| JPS61170528A (ja) * | 1985-01-22 | 1986-08-01 | Sutaaroi Sangyo Kk | コバルトの剥離回収方法 |
| US5047566A (en) * | 1986-08-14 | 1991-09-10 | Minnesota Mining And Manufacturing Company | Colorless ferric alkylphosphates |
| FR2624755B1 (fr) * | 1987-12-18 | 1991-10-11 | Commissariat Energie Atomique | Procede de reextraction en solution aqueuse du plutonium present dans un solvant organique, utilisable notamment pour la partition uranium plutonium |
| JPH0495899A (ja) * | 1990-08-14 | 1992-03-27 | Power Reactor & Nuclear Fuel Dev Corp | 核燃料サイクルから発生する使用済溶媒の抽出分離方法 |
| US5135728A (en) * | 1992-01-03 | 1992-08-04 | Karraker David G | Method for dissolving delta-phase plutonium |
| RU2241678C2 (ru) * | 2001-04-09 | 2004-12-10 | Открытое акционерное общество "Ульбинский металлургический завод" | Способ регенерации органической фазы, используемой при экстракции урана |
| CN102776372B (zh) * | 2012-08-21 | 2013-10-30 | 中国原子能科学研究院 | 铀、钚、镎共萃取的方法 |
| JP6260900B2 (ja) * | 2014-02-19 | 2018-01-17 | 三菱重工業株式会社 | 放射性廃液処理方法 |
| JP6366316B2 (ja) * | 2014-03-25 | 2018-08-01 | 三菱重工業株式会社 | 廃液処理システム及び廃液処理方法 |
| JP2016031296A (ja) * | 2014-07-29 | 2016-03-07 | 三菱重工業株式会社 | 廃液処理システム及び廃液処理方法 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2815262A (en) * | 1952-06-24 | 1957-12-03 | Grover L Bridger | Separation process for thorium salts |
| US2990240A (en) * | 1952-08-11 | 1961-06-27 | Charles V Ellison | Process for segregating uranium from plutonium and fission-product contamination |
| US2885260A (en) * | 1957-04-23 | 1959-05-05 | William J Maraman | Method for decontamination of reactor solutions |
| US3214239A (en) * | 1962-07-02 | 1965-10-26 | Kerr Mc Gee Oil Ind Inc | Recovery of metal values from aqueous solution by solvent extraction with an organo phosphorus extractant |
| BE635254A (Direct) * | 1962-08-17 | 1900-01-01 | ||
| FR90703E (fr) * | 1964-06-19 | 1968-02-02 | Commissariat Energie Atomique | Procédé de purification et de concentration simultanées du plutonium et plutonium obtenu selon ce procédé |
| US3378352A (en) * | 1965-12-15 | 1968-04-16 | Dow Chemical Co | Process for extracting thorium and rare earths |
| US3463619A (en) * | 1968-07-12 | 1969-08-26 | Atomic Energy Commission | Solvent extraction process for purifying americium and curium |
| US3574532A (en) * | 1969-03-20 | 1971-04-13 | Atomic Energy Commission | Wash treatment to restore the degraded d2ehpa-tbp used in fission product extraction |
| US3708508A (en) * | 1971-04-09 | 1973-01-02 | Atomic Energy Commission | Method for the purification and recovery of tributyl phosphate used in reprocessing nuclear fuel |
| US3943204A (en) * | 1974-02-05 | 1976-03-09 | The United States Of America As Represented By The United States Energy Research And Development Administration | Method for improving the extraction properties of a tributyl phosphate solution |
-
1975
- 1975-05-15 US US05/577,821 patent/US3987145A/en not_active Expired - Lifetime
-
1976
- 1976-03-29 GB GB1248676A patent/GB1528415A/en not_active Expired
- 1976-03-31 CA CA249,303A patent/CA1064707A/en not_active Expired
- 1976-05-10 BE BE166908A patent/BE841665A/xx unknown
- 1976-05-12 FR FR7614294A patent/FR2310968A1/fr active Granted
- 1976-05-15 JP JP5599376A patent/JPS5214198A/ja active Pending
- 1976-05-15 DE DE19762621795 patent/DE2621795A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2310968A1 (fr) | 1976-12-10 |
| FR2310968B1 (Direct) | 1980-08-29 |
| BE841665A (fr) | 1976-09-01 |
| GB1528415A (en) | 1978-10-11 |
| US3987145A (en) | 1976-10-19 |
| DE2621795A1 (de) | 1976-11-25 |
| JPS5214198A (en) | 1977-02-02 |
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