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Improved Recovery And Purification Of Plutonium At Los Alamos Using Macroporous Anion Exchange Resin
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Book Synopsis Improved Recovery and Purification of Plutonium at Los Alamos Using Macroporous Anion Exchange Resin by :
Download or read book Improved Recovery and Purification of Plutonium at Los Alamos Using Macroporous Anion Exchange Resin written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: For almost 30 years, Los Alamos National Laboratory has used anion exchange in nitric acid as the major aqueous process or the recovery and purification of plutonium. One of the few disadvantages of this system is the particularly slow rate at which the anionic nitrato complex of Pu(IV) equilibrates with the resin. The Nuclear Materials Process Technology Group at Los Alamos recently completed an ion exchange development program that focused on improving the slow sorption kinetics that limits this process. A comprehensive investigation of modern anion exchange resins identified porosity and bead size as the properties that most influence plutonium sorption kinetics. Our study found that small beads of macroporous resin produced a dramatic increase in plutonium process efficiency. The Rocky Flats Plant has already adopted this improved ion exchange technology, and it currently is being evaluated for use in other DOE plutonium-processing facilities.
Book Synopsis Improved Recovery and Purification of Plutonium at Los Alamos Using Macroporous Anion Exchange Resin by : S. Fredric Marsh
Download or read book Improved Recovery and Purification of Plutonium at Los Alamos Using Macroporous Anion Exchange Resin written by S. Fredric Marsh and published by . This book was released on 1987 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plutonium Ion Exchange Processes by :
Download or read book Plutonium Ion Exchange Processes written by and published by . This book was released on 1961 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nine papers are included which were presented at the meeting in Oak Ridge. The papers are chiefly on plutonium separation by anion and cation exchange, although ion exchange contactors, amine extraction of plutonium, and uranium recovery from reduction residues are briefly treated. Separate abstracts have been prepared for each paper. (D.L.C.).
Book Synopsis Plutonium Recovery at the Los Alamos Scientific Laboratory by :
Download or read book Plutonium Recovery at the Los Alamos Scientific Laboratory written by and published by . This book was released on 1980 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Research programs have led to the adoption of procedures for all phases of plutonium recovery and purification. This report discusses some of the many procedures required to recover and purify the plutonium contained in the residues generated by LASL research, process development, and production activities. The report also discusses general plant facilities, the liquid and gaseous effluents, and solid waste management practices at the New Plutonium Facility, TA-55. Many of the processes or operations are merely steps in preparing the feed for one of the purification systems. For example, the plutonium is currently removed from noncombustibles in the pickling operation with an HNO3 leach. The HNO3 leach solution is the product of this operation and is sent to one of the nitrate anion-exchange systems for concentration and purification.
Book Synopsis The Influence of Plutonium Concentration and Solution Flow Rate on the Effective Capacity of Macroporous Anion Exchange Resin. [Lewatit MP-500-FK ; Pu]. by :
Download or read book The Influence of Plutonium Concentration and Solution Flow Rate on the Effective Capacity of Macroporous Anion Exchange Resin. [Lewatit MP-500-FK ; Pu]. written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The principal aqueous process used to recover and purify plutonium at the Los Alamos Plutonium Facility is anion exchange in nitric acid. Previous studies with gel-type anion exchange resin have shown an inverse relationship between plutonium concentration in the feed solution and the optimum flow rate for this process. Because gel-type resin has been replaced with macroporous resin at Los Alamos, the relationship between plutonium concentration and solution flow rate was reexamined with the selected Lewatit MP-500-FK resin using solutions of plutonium in nitric acid and in nitric acid with high levels of added nitrate salts. Our results with this resin differ significantly from previous data obtained with gel-type resin. Flow-rate variation from 10 to 80 liters per hour had essentially no effect on the measured quantities of plutonium sorbed by the macroporous resin. However, the effect of plutonium concentration in the feed solutions was pronounced, as feed solutions that contained the highest concentrations of plutonium also produced the highest resin loadings. The most notable effect of high concentrations of dissolved nitrate salts in these solutions was an increased resin capacity for plutonium at low flow rates. 16 refs., 7 figs., 2 tabs.
Book Synopsis The Recovery, Purification, and Concentration of Plutonium by Anion Exchange in Nitric Acid by :
Download or read book The Recovery, Purification, and Concentration of Plutonium by Anion Exchange in Nitric Acid written by and published by . This book was released on 1959 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A detailed experimental study has shown absorption of plutenium(IV) from 7 M HNO/sub 3/ solutions by strongbase (quaternary amine) anion exchange resins to be a very powerful and versatile processing method for plutonium. The simple expedient of operating at 50 to 60 deg C relieves most of the objections of former anion exchange processes for plutonium in that it permits adequate processing rates and efficiency to be obtained with four per cent cross-linked resins. Commercially available strong-base anion exchange resins Dowex-1, X-4 (50 to 100 mesh), among 50 to 100 mesh resins, and Permutit SK (20 to 50 mesh), among 20 to 50 mesh resins, are markedly superior for most process applications. The anion exchange process consists of an absorption or loading step in which plutonium is absorbed out of a feed solution by the resin, washing step in which impurities are removed by washing the plutonium-laden resin with an appropriate wash solution, and an elution step in which plutonium is stripped off the resin in an appropriate aqueous solution The effects of the pertinent variables in each of these steps have been studied in some detail, yielding informatlon which can be readily extrapolated to new processing applications. (auth).
Book Synopsis The Recovery of Uranium and Plutonium from Stainless Steel Sulfate Decladding Solutions by Ion Exchange by : W. J. Neill
Download or read book The Recovery of Uranium and Plutonium from Stainless Steel Sulfate Decladding Solutions by Ion Exchange written by W. J. Neill and published by . This book was released on 1958 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The recovery, purification, and concentration of plutonium by anion exchange in nitric acid by : J. L. Ryan
Download or read book The recovery, purification, and concentration of plutonium by anion exchange in nitric acid written by J. L. Ryan and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Improved Two-column Ion Exchange Separation of Plutonium, Uranium, and Neodymium in Mixed Uranium-plutonium Fuels for Burnup Measurement by : S. F. Marsh
Download or read book Improved Two-column Ion Exchange Separation of Plutonium, Uranium, and Neodymium in Mixed Uranium-plutonium Fuels for Burnup Measurement written by S. F. Marsh and published by . This book was released on 1974 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reillex written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Anion exchange in nitric acid is the major aqueous process used to recover and purify plutonium from impure scrap materials. Most strong-base anion exchange resins incorporate a styrene-divinylbenzene copolymer. A newly available, macroporous anion exchange resin based on a copolymer of 1-methyl-4-vinylpyridine and divinylbenzene has been evaluated. Comparative data for Pu(IV) sorption kinetics and capacity are presented for this new resin and two other commonly used anion exchange resins. The new resin offers high capacity and rapid sorption kinetics for Pu(IV) from nitric acid, as well as greater stability to chemical and radiolytic degradation. 8 refs., 12 figs.
Book Synopsis The Influence of Plutonium Concentration and Solution Flow Rate on the Effective Capacity of Macroporous Anion Exchange Resin by : S. Fredric Marsh
Download or read book The Influence of Plutonium Concentration and Solution Flow Rate on the Effective Capacity of Macroporous Anion Exchange Resin written by S. Fredric Marsh and published by . This book was released on 1987 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Publications of Los Alamos Research by : Los Alamos National Laboratory
Download or read book Publications of Los Alamos Research written by Los Alamos National Laboratory and published by . This book was released on 1987 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Anion Exchange Recovery of Plutonium from the Hanford 234-5 Building Button Line by : Earl J. Wheelwright
Download or read book Anion Exchange Recovery of Plutonium from the Hanford 234-5 Building Button Line written by Earl J. Wheelwright and published by . This book was released on 1962 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Small-scale Study on the Dissolution and Anion-exchange Recovery of Plutonium from Rocky Flats Plant Incinerator Ash by : Thomas W. Blum
Download or read book A Small-scale Study on the Dissolution and Anion-exchange Recovery of Plutonium from Rocky Flats Plant Incinerator Ash written by Thomas W. Blum and published by . This book was released on 1990 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1979 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Chemical Treatment of Plutonium with Hydrogen Peroxide Before Nitrate Anion Exchange Processing by : S. Fredric Marsh
Download or read book Chemical Treatment of Plutonium with Hydrogen Peroxide Before Nitrate Anion Exchange Processing written by S. Fredric Marsh and published by . This book was released on 1987 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aqueous Nitrate Flowsheet Optimization and Enhancement Using the ATLAS Facility by :
Download or read book Aqueous Nitrate Flowsheet Optimization and Enhancement Using the ATLAS Facility written by and published by . This book was released on 1993 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Advanced Testing Line for Actinide Separations (ATLAS) is a pilot plant of all aqueous nitrate plutonium recovery and purification operations within the Los Alamos Plutonium Facility. The main unit operations include dissolution, anion exchange, precipitations, evaporation, calcination, and waste stream polishing. In the current political environment, the emphasis has been redirected from the traditional goal of recovering a pure plutonium product to that of generating ''clean'' effluents while placing the plutonium into a form suitable for long term storage. The ATLAS facility is uniquely suited to fulfill this new role in the development and demonstration of new or revisited technologies. This report summarizes recent work in equipment improvements to the batch dissolver, an evaluation of homogeneous hydroxide precipitations, a demonstration of nitric acid recycle, and the preparation of neptunium and plutonium standards.
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