Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Electrorefining"”.
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Electrorefining of base metal refinery residue copper alloy for platinum group metal recovery
… is used to produce anodes to be applied to an electrorefining application for the recovery of Cu as a Cu cathode and PGMs in the form of anode slimes. Spent electrolyte from the BMR copper electrowinning section adjusted to specific pH and Cu concentration is used as electrolyte to which …
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Investigation and modeling of uranium polarization for the electrorefining of Scrap U-MO foils
… in the manufacture of this novel fuel type. Electrorefining, the main separation process of pyroprocessing, is modeled through a novel approach using corrosion theory. To use corrosion theory, knowledge of uranium polarization and kinetic parameters such as Tafel constant, transfer …
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A spectroscopic and electrochemical study of chlorotitanates in molten salt media
… is necessary. The present study focused on the electrorefining of titanium in a bath consisting of the CsCl-NaCl-KCl eutectic as the solvent. Interfacial phenomena (multiple reaction steps and the kinetics associated with each) related to the faradaic process were investigated with …
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Ionic liquid electrochemical processing of reactive metals
… setup (chlorine evolution anode reaction) and electrorefining setup (Al dissolution anode reaction). The deposits were characterized in terms of morphology, current efficiency and power consumption. A variety of deposit morphologies were observed ranging from smooth, to spherical to dendritic, …
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Delineation of the Cardioprotective Agents found in red wine
… is used to produce anodes to be applied to an electrorefining application for the recovery of Cu as a Cu cathode and PGMs in the form of anode slimes. Spent electrolyte from the BMR copper electrowinning section adjusted to specific pH and Cu concentration is used as electrolyte to which …
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Development of Monte Carlo models of a gamma-ray nondestructive assay system for nuclear material control and accountability
… faced at Los Alamos National Laboratory (LANL): electrorefining salt (ER) residues and holdup in gloveboxes. For holdup measurements, accuracy is inherently limited because the exact distribution of material is unknown, which can lead to high uncertainties in reported masses. While the …
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Methodology for determining electronic transference numbers in molten sulfide melts
… replace the conventional process of smelting and electrorefining [1]. The allure of an electrolysis process for metals extraction can be enhanced by increasing its faradaic efficiency, through, for example, decreasing the electronic transference number of the electrolyte. This thesis compares two …
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Reduction of Solid Uranium Dioxide in Calcium Salts
… it continues by one or two of the following; – electrorefining, – chlorination, and – fluorination. The subject of this study focused on oxide reduction in two categories: chemical reduction and electrochemical reduction. The system designs have been optimized in calcium salts since they have …
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Fundamental studies on electrochemical production of dendrite-free aluminum and titanium-aluminum alloys
A novel dendrite-free electrorefining of aluminum scrap was investigated by using AlCl_3 -1-Ethyl-3-methyl-imidazolium chloride (EMIC) ionic liquid electrolyte. Electrodeposition of aluminum were conducted on copper/aluminum cathodes at voltage of 1.5 V, temperatures (50-110ºC), stirring rate …
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Copper electrodeposition in the presence of guar or activated polyacrylamide
… organic additive for copper electrowinning and electrorefining. This thesis also presents the comparison between the new organic additive ‘activated polyacrylamide’ and Guartec (Guar), the industry-standard organic additive for electrowinning under industrial conditions. The first half of the …