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| Number | Title | Issue Date |
| 8137644 | Method for the elimination of uranium (VI) species in the form of uranyl complexes from waters The invention relates to a method for the removal of uranium(VI) species from waters by means of weakly basic, polyacrylic-based anion exchangers, said uranium(VI) species being present in the form of uranyl complexes as dissolved uranyl. ... | 03/20/2012 |
| 7655199 | Process for uranium recovery using anion exchange resin The present invention relates to a process for the recovery of uranium in high silica environments comprising the use of a strong base macroreticular ion exchange resin. ... | 02/02/2010 |
| 7394074 | Protective housing for radionuclide generator and combination thereof A protective cover and radionuclide generator assembly. The cover protecting inlet and outlet connections disposed on the radionuclide generator. The radionuclide generator having a distal end having a generally flat top surface. The protective cover removably fixed... | 07/01/2008 |
| 7390934 | Apparatus and method for aiding in the removal of enriched uranium from soils A method and apparatus for removing uranium (IV) and uranium (VI) from sands and soils. The method and device assays a volume of soil and determines a presence and position of uranium enrichment. A concentration of uranium enrichment is determined, and compared to a... | 06/24/2008 |
| 7323153 | Reprocessing method by fluoride volatility process using fractional distillation Fluorine or a fluorine compound is subjected to a reaction with a spent oxide fuel to produce fluorides of uranium and plutonium, and recovering the fluorides using a difference in volatility behavior. The method includes steps of: subjecting a mixture of UO2 | 01/29/2008 |
| 7285219 | Chromatographic separation member and method There is described a chromatographic separation member including a substrate carrying on at least one surface a thin layer of a chromatographically active capture material. Also described is a chromatographic separation method for separating a component of interest ... | 10/23/2007 |
| 7282153 | Method for removal of arsenic from water A method for removing arsenic from water by contacting water with a strong base anion exchange resin comprising at least one metal ion or metal-containing ion whose arsenate salt has a Ksp no greater than 10−5, provided that the metal is not ... | 10/16/2007 |
| 7214318 | Method for separation of actinide elements A method for separation of actinide elements comprising feeding a solution containing actinide elements such as americium, curium, californium and the like, into a resin column in which a weakly basic primary, secondary or tertiary anion exchange resin obtained by r... | 05/08/2007 |
| 7211231 | Ion exchange materials for use in a Bi generator A bismuth-213 generator comprising an insoluble composition having the general formula Zr(Phosponate)x(HPO4)2−x.nH2O, wherein x is between 0 and 2; and n is the number of waters of hydration; and wherein cations of radio... | 05/01/2007 |
| 7208129 | Reprocessing method by fluoride volatility process using solid-gas separation Fluorine or a fluorine compound is subjected to a reaction with a spent oxide fuel to produce fluorides of uranium and plutonium, and the fluorides are recovered using a difference in volatility behavior. The spent oxide fuel is subjected to a reaction with an HF ga... | 04/24/2007 |
| 7172741 | Method for reprocessing spent nuclear fuel It is an object to increase a reprocessing speed of spent nuclear fuel and to obtain uranium having a high purity and a plutonium mixture reusable as it is at a low cost through a simple procedure. The spent nuclear fuel 1 is subjected to fluorination ... | 02/06/2007 |
| 7157022 | Multivalent metal ion extraction using diglycolamide-coated particles A separation medium, a method for using that separation medium and an apparatus for selectively extracting multivalent cations such as pseudo-lanthanide, prelanthanide, lanthanide, preactinide or actinide cations from an aqueous acidic sample solution is described. ... | 01/02/2007 |
| 7157061 | Process for radioisotope recovery and system for implementing same A method of recovering daughter isotopes from a radioisotope mixture. The method comprises providing a radioisotope mixture solution comprising at least one parent isotope. The at least one parent isotope is extracted into an organic phase, which comprises an extrac... | 01/02/2007 |
| 7087206 | Multicolumn selectivity inversion generator for production of high purity actinium for use in therapeutic nuclear medicine A multicolumn selectivity inversion generator separation method has been developed in which actinium ions, a desired daughter radionuclide, are selectively extracted from a solution of the thorium parent and daughter radionuclides by a primary separation column, str... | 08/08/2006 |
| 7077901 | Process for producing single crystal silicon wafers A process for producing a single crystal silicon wafer, comprising the steps of forming a porous layer on a single crystal silicon substrate comprising a silicon whose concentration of mass number 28 silicon isotope is less than 92.5% on an average; dissolving a sta... | 07/18/2006 |
| 7045365 | Supported aldehydic silanes and method of manufacture A method for producing a derivatized aldehydic support matrix material includes activating surface hydroxyl groups on the support matrix material and reacting the activated hydroxyl groups with an aldehydic alkoxy silane. The derivatized aldehydic support matrix mat... | 05/16/2006 |
| 7037482 | Solvent extraction of a halide from a aqueous sulphate solution A method of extracting a halide and sulphate from an aqueous sulphate solution, such as a zinc sulphate solution, comprises subjecting the solution to solvent extraction to extract halide and sulphate from the solution and controlling the amount of sulphate extracte... | 05/02/2006 |
| 6998052 | Multicolumn selectivity inversion generator for production of ultrapure radionuclides A multicolumn selectivity inversion generator separation method has been developed in which a desired daughter radionuclide is selectively extracted from a solution of the parent and daughter radionuclides by a primary separation column, stripped, and passed through... | 02/14/2006 |
| 6972095 | Magnetic molecules: a process utilizing functionalized magnetic ferritins for the selective removal of contaminants from solution by magnetic filtration A decontamination system uses magnetic molecules having ferritin cores to selectively remove target contaminant ions from a solution. The magnetic molecules are based upon a ferritin protein structure and have a very small magnetic ferritin core and a selective ion ... | 12/06/2005 |
| 6852233 | Metal-collecting apparatus and method for elution and recovery of metal from metal-collecting material An object of the present invention is to provide a structure of a metal collecting material for use in seawater or river water or industrial wastewater to give the most excellent adsorption efficiency. Another object of the present invention is to provide a process ... | 02/08/2005 |
| 6716353 | Method for preparing high specific activity 177Lu A method of separating lutetium from a solution containing Lu and Yb, particularly reactor-produced 177Lu and 177Yb, includes the steps of: providing a chromatographic separation apparatus containing LN resin; loading the apparatus with a solut... | 04/06/2004 |
| 6695986 | Electrocatalytic enhancement with catalyst-modified carbon-silica composite aerogels An electrically conductive composite is provided having a mesoporous architecture that improves the accessibility of a nanoscopic catalyst, supported on conductive carbon, to a mass-transported reactant, or substrate, thereby leading to enhanced catalytic... | 02/24/2004 |
| 6667016 | Inorganic-organic hybrid gels for extracting species such as lanthanides and actinides, and their preparation Inorganic-organic hybrid gels can be employed to extract chemical species such as lanthanides and actinides and their preparation. The gels include a network of inorganic components with the formula: ##STR1## where M is Si, Ti, Zr or Al, wherein organic molecu... | 12/23/2003 |
| 6603127 | Bismuth-213 generator and uses thereof The present invention provides a generator capable of producing therapeutic Bismuth-213 doses. Also disclosed are methods of preparing Bismuth-213-labeled compounds using such generator and applications of the labeled compounds.... | 08/05/2003 |
| 6471922 | Actinide removal from spent salts A method for removing actinide contaminants (uranium and thorium) from the spent salt of a molten salt oxidation (MSO) reactor is described. Spent salt is removed from the reactor and analyzed to determine the contaminants present and the carbonate concen... | 10/29/2002 |
| 6436358 | Metals removal from spent salts A method and apparatus for removing metal contaminants from the spent salt of a molten salt oxidation (MSO) reactor is described. Spent salt is removed from the reactor and analyzed to determine the contaminants present and the carbonate concentration. Th... | 08/20/2002 |
| 6402953 | Adsorption means for radionuclides The invention relates to adsorption material for radionuclides based on a fine fibrous material containing chitin. The material is obtained from fungi and insoluble ferrocyanides of the transition metals, especially copper ferrocyanide. The adsorption mat... | 06/11/2002 |
| 6153154 | Method for sequential injection of liquid samples for radioisotope separations The present invention is a method of separating a short-lived daughter isotope from a longer lived parent isotope, with recovery of the parent isotope for further use. Using a system with a bi-directional pump and one or more valves, a solution of the par... | 11/28/2000 |
| 5885465 | Method of separating short half-life radionuclides from a mixture of radionuclides The present invention is a method of removing an impurity of plutonium, lead or a combination thereof from a mixture of radionuclides that contains the impurity and at least one parent radionuclide. The method has the steps of (a) insuring that the mixtur... | 03/23/1999 |
| 5863439 | Process for separation and preconcentration of radium from water A process for preconcentrating and separating radium from a contaminated solution containing at least water and radium includes the steps of adding a quantity of a water-soluble macrocyclic polyether to the contaminated solution to form a combined solutio... | 01/26/1999 |
| 5854968 | Process and apparatus for the production of BI-213 cations A process for producing substantially impurity-free Bi-213 cations is disclosed. An aqueous acid feed solution containing Ac-225 cations is contacted with an ion exchange medium to bind the Ac-225 cations and form an Ac-225-laden ion exchange medium. The ... | 12/29/1998 |
| 5852786 | Process for decontaminating radioactive materials A process for the decontamination of radioactive materials which process comprises the steps of: i) contacting the material to be decontaminated with a dilute carbonate containing solution in the presence of ion exchange particles which either contains or... | 12/22/1998 |
| 5835865 | Method and device for the disposal of a cation exchanger A cation exchanger is loaded only with radioactive cations by repeatedly converting the non-bivalent, inactive cations into anionic complexes and flushing the complexes out of the cation exchanger. The cation exchanger, which may be integrated in a primar... | 11/10/1998 |
| 5809394 | Methods of separating short half-life radionuclides from a mixture of radionuclides The present invention is a method of obtaining a radionuclide product selected from the group consisting of 223 Ra and 225 Ac, from a radionuclide "cow" of 227 Ac or 229 Th respectively. The method comprises the... | 09/15/1998 |
| 5476641 | Method of separating and recovering plutonium and neptunium from plutonium- and neptunium-containing nitric acid solution A method of separating and recovering Pu and Np from a Pu- and Np-containing nitric acid solution. The method comprises the steps of subjecting a nitric acid solution containing Pu and Np to valence adjustment by adding a reducing agent consisting of hydr... | 12/19/1995 |
| 5460791 | Method for adsorbing and separating heavy metal elements by using a tannin adsorbent and method of regenerating the adsorbent A method of adsorbing and separating a heavy metal element by using a tannin adsorbent comprising: (a) adjusting the pH of a solution containing a plurality of heavy metal elements to a predetermined pH; (b) contacting the adsorbent with the solution in which ... | 10/24/1995 |
| 5344624 | Method for recovering with the aid of a crown compound plutonium (IV) present in solutions, such as aqueous effluents, concentrated solutions of fission products and concentrated solutions of plutonium The invention concerns the recovery of Pu (IV) by using crown compounds. According to the invention, the aqueous solution containing the plutonium (IV) is placed in contact with at least one crown compound, for example DCH 18C6, dissolved in an organic dilutin... | 09/06/1994 |
| 5340560 | Method for making fumed silica having a reduced aggregate size and product A method is provided for making fumed silica aggregate having an average convex perimeter in the range of about 0.12 micron to about 0.6 micron based on the combustion of a mixture of a silicon compound, such as an organosilane, an oxygen containing gas, ... | 08/23/1994 |
| 5324491 | Enzymatic reduction and precipitation of uranium A method for removing uranium from uranium contaminated water involves adding uranium reducing microorganisms and an electron donor to uranium contaminated water to reduce U(VI) in the uranium contaminated water to U(IV) which in turn forms a UO2 | 06/28/1994 |
| 5322644 | Process for decontamination of radioactive materials A process for decontaminating radioactive material comprises the step of contacting the material with a dissolving composition to dissolve the contaminants in the material, said composition comprising a dilute solution of about 0.05 molar ethylene diamine... | 06/21/1994 |
