2 edition of Recovery and purification of uranium using reciprocating flow ion exchange, RFIX. found in the catalog.
Recovery and purification of uranium using reciprocating flow ion exchange, RFIX.
Maung Win Maung
Written in English
|The Physical Object|
|Number of Pages||241|
Recovery of Uranium from Carbonate Solutions of Industrial Waste Streams Uranium carbonate industrial waste streams from a Brazilian nuclear production plant were treated by an ion exchange process using a Type II strong base anion exchange resin, IRAA with a dimethyl 2-hydroxy ethyl functional group (21). The stream needed to be. Recovery of Uranium from Vitro Leach Liquors by Ion Exchange. Part II. Cyclic Column Tests Comparing IRA and XE Resins and Cyclic Testing of a Resin-in-Pulp System, [Norman N. Schiff] on *FREE* shipping on qualifying offers. Recovery of Uranium from Vitro Leach Liquors by Ion Exchange. Part II. Cyclic Column Tests Comparing IRA and XE Resins and Cyclic Testing of a Author: Norman N. Schiff.
The extraction of uranium from aqueous model solutions, as well as from real solutions reulting from leaching uranium ores was carried out in the system equipped with the Liqui-Cel® Extra-Flow membrane contactor with polypropylene capillary membranes. D2EHPA in toluene was used as an organic phase. Different arrangements of flow inside the membrane module were by: 1. potentially reduce the mass flow to the downstream leach and recovery plants. Purification or separation of uranium in carbonate systems. While it is possible to directly precipitate uranium from clarified leachate, the presence of impurities such as vanadium, molybdenum and others may dictate that ion exchange or selective precipitation is.
It was identified that S and EDEP resins could be used effectively at uranium ion exchange recovery from pregnant solutions of uranium ISL. Further experiments determined that there is the possibility of integration of S resin in existing technology of uranium ISL enterprises by using circulating desorption solution, which is prepared. RECOVERY OF URANIUM FROM URANIUM RESIDUE BY ALKALINE LEACHING By BUNDJOKO KWETO Supervisor: Dr DR Groot A dissertation submitted in partial fulfilment of the requirements for the degree of MASTER OF APPLIED SCIENCES (METALLURGY) Department of Materials Science and Metallurgical Engineering FACULTY OF ENGINEERING, BUILT ENVIRONMENT AND INFORMATION.
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Usage and abusage
Chemical processes for the elaboration of uranium concentrate from uranium ore have been studied. This process is composed of successive units operations: crushing, milling, acid conventional leaching, filtration-washing, purification–concentration by ion exchange resins and uranium by: 3.
ION EXCHANGE Solvent extraction or ion exchange is normally employed to concentrate and purify the uranium leachate and remove impurities. Solvent extraction and ion exchange both involve the interchange of ions between the aqueous solution and either a liquid organic solution or a solid Size: KB.
uranium for ion exchange sites. Common examples are vanadate, molybdate, chloride, and nitrate. Substances fouling ion exchange resins: compounds which form inert deposits or salts inside and/or on the surface of ion exchange resins.
Such deposits are not removed by File Size: KB. Uranium carbonate industrial waste streams from a Brazilian nuclear production plant were treated by an ion exchange process using a Type II strong base anion exchange resin, IRAA with a dimethyl 2-hydroxy ethyl functional group.
The stream needed to be boiled for 6 h to lower the total carbonate concentration before it could be treated. Isolation of Uranium by Anionic Exchange Resins 91 radium contained in the eluate of this second column is purified in a cation-exchange resin (Dowex 50W-X8, mesh) at pH 1 .
Solid-phase extraction, in combination with an ion exchanging, has also been used in RFIX. book separation of U from its radioactive daughters. For example,File Size: KB.
The recovery of uranium from nuclear industrial effluent has been studied using laboratory column and polymeric ion exchange resin. The industrial effluent, at pH aro contains uranium (40 mg/L), ammonium (80 g/L) and carbonate ( g/L) and cannot be discharged without previous by: Enriched uranium is a type of uranium in which the percent composition of uranium (written U) has been increased through the process of isotope lly occurring uranium is composed of three major isotopes: uranium ( U with –% natural abundance), uranium ( U, –%), and uranium ( U, –%).
Research and development activities on the recovery of uranium from phosphoric acid are continuing along three main lines: a) Improvements on the DEPA/TOPO process to further enhance its flexibility and economy, b) Development of new liquid-liquid extractants, c) Development of other processes such as ion-exchange (usingFile Size: 1MB.
Ion exchange is used in nearly every part of the nuclear fuel cycle — from the purification of uranium from its ore to the final recovery of uranium and transmutation products. Ion exchange also plays a valuable role in the management of nuclear wastes generated in the fuel by: 4.
Uranium recovery can be achieved by various methods including precipitation, liquid-liquid extraction using extensive amounts of organic solvents, ion exchange, adsorption, electrochemical.
99* (Max) 99 99+ Mine Water Mine Water Mine Water Mine Water Parameter Dependent Column Test Column Test 16 16 16 16 1 1 1 The majority of applications of ion exchange and chemical clarification for recovery of uranium (and other radioactive materials) has taken place at uranium ore processing operations or at national laboratories.
The aqueous phase flows through the stationary resin held in a column, and the net effect of all the chemical reactions is a "band" of uranium that moves through the ion-exchange column.
PURIFICATION PRECIPITATION URANIUM The extraction of uranium from natural resources is accomplished by hydrometallurgical processing The basic steps include liberation – dissolution – separation of uranium laden solution – purification – precipitation.
Amongst these operations, the comminution and filtration are very cost Size: 1MB. Process for the recovery of uranium from a pregnant lixiviant employed in uranium leaching operations in which the uranium is concentrated by ion exchange resin.
The ion exchange resin is eluted with an eluant containing molar ammonium carbonate. The eluant also contains a base such as ammonium hydroxide in an amount sufficient to increase the pH to a value within the range of Cited by: 7.
Uranium recovery from dilute sulfate solution by using a continuous ion-exchange technique. A Text Book of Quantitative Inorganic Analysis, 3rd Edition, John Wiley & Sons, New York, N.A.
Uranium recovery from dilute sulfate solution by using a Author: N. Javed. addition to using uranium to extract uranium from solutions obtained during the leaching of uranium ores, ion exchange processes are also used for complete desalination of water at nuclear power plants, for capturing radioactive isotopes from the waste water of nuclear enterprises .
At present, modern uranium ion exchangers Ambersep In addition to yellowcake, uranium recovery operations generate waste products, called byproduct materials, that contain low levels of radioactivity.
For mining activities, the regulatory responsibility depends on the extraction method that the given facility uses. Specifically, conventional mining (where uranium ore is removed from deep.
replace ion exchange for plutonium product purification and on the use of a large scale Higgins continuous ion exchange contactor for recovery of uranium by anion exchange, INTRODUCTION Ion exchange processes have been used for the final concentration and purification of the plutonium product from the Pwrex process andFile Size: 6MB.
Uranium Recovery (Extraction) Methods Uranium recovery involves one of the following extraction processes. In a conventional uranium mine and mill, uranium ore is extracted from the Earth, typically through deep underground shafts or shallow open pits.
The ore is transported to a mill, where it is crushed and undergoes a chemical process to. Important Uranium Isotopes U, α x U, α/γ x U, α x Relative Activity % Specific Activity pCi/µg Half Life yr Natural Abundance % Isotope, Emission Natural abundance and.
Ion exchange investigation for recovery of uranium from acidic pregnant leach solutions. Nukleonika62 (3), DOI: /nukaCited by: 3.Recovery of uranium from slightly alkaline mine water, available in the Ambrosia Lake District of New Mexico, was studied using countercurrent ion exchange columns developed by the Bureau of Mines.
Approximately 5 million gallons of mine water containing 9 to 12 ppm u3o8 was treated by ion exchange using a inch-diameter absorption column.To verifying the feasibility of uranium recovery with fungal metabolic products in large-scale applications, column leaching and ion exchange of uranium was carried out.
The uranium recovery.