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236-Z canyon utilization study

Description: The 236-Z canyon contains equipment for repurification of plutonium and recovery of plutonium from scrap material. To meet production requirements of Fast Flux Test Facility/Clinch River Breeder Reactor oxide with the existing plant, several new pieces of equipment will be needed in the future. More storage space and a better accountability system are needed to support this increased production. The available canyon space needs to be utilized to its fullest in order to accommodate the new equip… more
Date: March 8, 1977
Creator: Dixon, D.R
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Modified Purex process for the separation and recovery of plutonium--uranium residues

Description: A modified (one-cycle) Purex process has been developed for the separation and recovery of plutonium and uranium from mixed actinide residues. The process utilizes 30 vol % tributyl phosphate--dodecane to extract uranium from a 5M nitric acid-plutonium (III)-uranium(VI) feed. After uranium extraction, plutonium in the aqueous feed solution is purified by anion exchange technology. Uranium in the organic is scrubbed and stripped to effectively purify the uranium so that it contains <5,000 ppM pl… more
Date: July 8, 1978
Creator: Navratil, J.D. & Leebl, R.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemistry Research and Development. Progress Report, July 1977--April 1978

Description: The following studies are reported on: calorimetry and thermodynamics of nuclear materials; actinide recovery and purification; optimization of the cation exchange process for recovering americium and plutonium from molten salt extraction residues; decontamination of soil; secondary actinide recovery; evaluation of tributyl phosphate-impregnated sorbent for plutonium-uranium separations; comparison of cation exchange recovery of actinides from the NaCl--KCl--MgCl/sub 2/ and CaCl/sub 2/--KCl--Mg… more
Date: November 8, 1978
Creator: Miner, F. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A new model for solvent extraction in columns

Description: A new model was developed for analyzing solvent extraction processes carried out in columns. Each column is treated as a series of well-defined equilibrium stages where the backmixing (other-phase carryover) between stages can be large. By including all mass transfer effects in the backmixing value, the same number of stages can be used for all extracted components no matter what their distribution coefficients. This greatly simplifies the calculations required when modeling multicomponent solv… more
Date: December 8, 1989
Creator: Leonard, R. A.; Regalbuto, M. C.; Chamberlain, D. B. & Vandegrift, G. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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SUPPLEMENTAL ON-LINE MATERIAL, INFLUENCE OF pH ON PLUTONIUM DESORPTION/SOLUBILIZATION FROM SEDIMENT

Description: The oxidation state distribution of Pu in each sample for each reaction time was measured using a combined ultrafiltration and solvent extraction technique (1-4). First the oxidation state distribution of aqueous Pu is measured. Then the total system (solid and aqueous phase combined) Pu oxidation state distribution is measured by lowering the pH to leach Pu from the solid phase. For each reaction time, a 2.5-mL aliquot of the aqueous phase was removed and passed through a 12-nm filter (Microse… more
Date: March 8, 2006
Creator: Kaplan, D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Development of Continuous Solvent Extraction Processes for Coal Derived Carbon Products Quarterly Report

Description: The purpose of this DOE-funded effort is to develop continuous processes for solvent extraction of coal for the production of carbon products. These carbon products include materials used in metals smelting, especially in the aluminum and steel industries, as well as porous carbon structural material referred to as ''carbon foam'' and carbon fibers. During this reporting period, efforts have focused on the development of continuous processes for hydrogenation as well as continuous production of… more
Date: June 8, 2005
Creator: Kennel, Elliot B.; Carpenter, Stephen P.; Dadyburjor, Dady; Katakdaunde, Manoj; Magean, Liviu; Stansberry, Peter G. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Caustic-Side Solvent Extraction: Chemical and Physical Properties of the Optimized Solvent

Description: This work was undertaken to optimize the solvent used in the Caustic Side Solvent Extraction (CSSX) process and to measure key chemical and physical properties related to its performance in the removal of cesium from the alkaline high-level salt waste stored in tanks at the Savannah River Site. The need to adjust the solvent composition arose from the prior discovery that the previous baseline solvent was supersaturated with respect to the calixarene extractant. The following solvent-component … more
Date: October 8, 2002
Creator: Delmau, L. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Multi-day test of the caustic-side solvent extraction flowsheet for cesium removal from a simulated SRS tank waste.

Description: To demonstrate that the caustic-side solvent extraction (CSSX) process could remove cesium from Savannah River Site (SRS) high-level waste over long periods of time, an improved minicontactor (2-cm centrifugal contactor) was needed that could be operated for several days. In particular, the contractor temperature had to be controlled and contactor hydraulic performance needed to be improved. Because the process was to be continuous, provisions were made for a three-shift operation. With the imp… more
Date: May 8, 2002
Creator: Leonard, R. A.; Aase, S. B.; Arafat, H. A.; Chamberlain, D. B.; Conner, C.; Falkenberg, J. R. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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CHEMICAL STABILITY OF POLYPHENYLENE SULFIDE IN THE NEXT GENERATION SOLVENT FOR CAUSTIC-SIDE SOLVENT EXTRACTION

Description: The Office of Waste Processing, within the Office of Technology Innovation and Development, is funding the development of an enhanced solvent for deployment at the Savannah River Site for removal of cesium from High Level Waste. For simplicity, this solvent is referred to as the Next Generation Solvent (NGS). The technical effort is collaboration between Oak Ridge National Laboratory (ORNL), Savannah River National Laboratory (SRNL), and Argonne National Laboratory. The initial deployment targe… more
Date: December 8, 2011
Creator: Fondeur, F. & Fink, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Factors Affecting the Extraction of Uranium with Dibutyl Carbitol

Description: Abstract: "This is a compilation of the material in several reports on the extraction of uranium from aqueous solutions with dibutyl carbitol. Data is presented concerning the optimum conditions for the extraction of the uranium and elimination of impurities."
Date: July 8, 1946
Creator: Weaver, Boyd S. & Larson, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental, health, safety, and socioeconomic concerns associated with oil recovery from US tar-sand deposits: state-of-knowledge

Description: Tar-sand petroleum-extraction procedures undergoing field testing for possible commercial application in the US include both surface (above-ground) and in situ (underground) procedures. The surface tar-sand systems currently being field tested in the US are thermal decomposition processes (retorting), and suspension methods (solvent extraction). Underground bitumen extraction procedures that are also being field tested domestically are in situ combustion and steam-injection. Environmental, heal… more
Date: January 8, 1982
Creator: Daniels, Jeffrey I.; Anspaugh, Lynn R. & Ricker, Yvonne E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Evaluation of extractant-coated ferromagnetic microparticles for the recovery of hazardous metals from waste solution.

Description: A magnetically assisted chemical separation (MACS) process was developed earlier at Argonne National Laboratory (ANL). This compact process was designed for the separation of transuranics (TRU) and radionuclides from the liquid waste streams that exist at many DOE sites, with an overall reduction in waste volume requiring disposal. The MACS process combines the selectivity afforded by solvent extractant/ion exchange materials with magnetic separation to provide an efficient chemical separation.… more
Date: May 8, 1998
Creator: Kaminski, M. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The SX Solver: A New Computer Program for Analyzing Solvent-Extraction Equilibria.

Description: A new computer program, the SX Solver, has been developed to analyze solvent-extraction equilibria. The program operates out of Microsoft Excel{reg_sign} and uses the built-in ''Solver'' function to minimize the sum of the square of the residuals between measured and calculated distribution coefficients. The extraction of nitric acid by tributyl phosphate has been modeled to illustrate the program's use.
Date: January 8, 1999
Creator: Lumetta, Gregg J; McNamara, Bruce K & Rapko, Brian M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ion Recognition Approach to Volume Reduction of Alkaline Tank Waste by Separation and Recycle of Sodium Hydroxide and Sodium Nitrate

Description: This research was intended to provide the scientific foundation upon which the feasibility of liquid-liquid extraction chemistry for bulk reduction of the volume of high-activity tank waste can be evaluated. Primary focus has been on sodium hydroxide separation, with potential Hanford application. Value in sodium hydroxide separation can potentially be found in alternative flowsheets for treatment and disposal of low-activity salt waste. Additional value can be expected in recycle of sodium hyd… more
Date: June 8, 2004
Creator: Moyer, Bruce A.; Marchand, Alan P.; Bonnesen, Peter V.; Bryan, Jeffrey C. & Haverlock, Tamara J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Extraction of Metal Ions with Di-2-Ethylhexyl Phosphoric Acid

Description: Blake and his co-workers have shown that uranium and other elements can be extracted from acid solutions by various type of organo-phosphorous compounds. Early investigations in the laboratory have demonstrated the applicability of tri-n-alkyl phosphine oxides to the extraction of metal ions from acidic solutions for analytical purposes. This paper is concerned with a similar qualitative investigation of the extraction of metal ions with a di-alkyl phosphoric acid, di-2-ethylhexyl phosphoric ac… more
Date: February 8, 1957
Creator: Ross, W. J. & White, J. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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