Documents disponibles écrits par cet auteur

Recycling of acidic and alkaline solutions by electrodialysis in a treatment process for uranium oxide waste using a carbonate solution with hydrogen peroxide / Kwang-Wook Kim in Industrial & engineering chemistry research, Vol. 51 N° 18 (Mai 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6275-6282 Titre : Recycling of acidic and alkaline solutions by electrodialysis in a treatment process for uranium oxide waste using a carbonate solution with hydrogen peroxide Type de document : texte imprimé Auteurs : Kwang-Wook Kim, Auteur ; Jun-Taek Hyun, Auteur ; Keun-Young Lee, Auteur Année de publication : 2012 Article en page(s) : pp. 6275-6282 Note générale : industrial chemistry Langues : Anglais (eng) Mots-clés : Membrane  separation  Hydrogen  peroxide  Electrodialysis  Recycling Résumé : In this work, an electrolytic system consisting of an electro-dialyzer and a gas-absorber was devised for recycling the carbonate salt solution produced in the process that uses a carbonate-hydrogen peroxide media for treating uranium-bearing wastes. The recovery characteristics of acidic and alkaline solutions in the electrodialysis system were investigated in a batch manner by changing several variables and then evaluated in continuous operation with an electro-dialyzers stacked system. When HNO3 and NaOH solutions from the effluent solution of NaNO3 after the treatment of uranium oxide waste were recovered by the electrodialysis system, the energy consumption required to treat the same amount of feed solution decreased with decreases in the applied current and in the applied voltage, even though it took a longer time. The electrodialysis yield to recover HNO3 and NaOH was proportional to the total electricity supplied in the system, regardless of whether the constant current or constant voltage operation mode was used. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867277 [article] Recycling of acidic and alkaline solutions by electrodialysis in a treatment process for uranium oxide waste using a carbonate solution with hydrogen peroxide [texte imprimé] / Kwang-Wook Kim, Auteur ; Jun-Taek Hyun, Auteur ; Keun-Young Lee, Auteur . - 2012 . - pp. 6275-6282. industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 18 (Mai 2012) . - pp. 6275-6282 Mots-clés : Membrane  separation  Hydrogen  peroxide  Electrodialysis  Recycling Résumé : In this work, an electrolytic system consisting of an electro-dialyzer and a gas-absorber was devised for recycling the carbonate salt solution produced in the process that uses a carbonate-hydrogen peroxide media for treating uranium-bearing wastes. The recovery characteristics of acidic and alkaline solutions in the electrodialysis system were investigated in a batch manner by changing several variables and then evaluated in continuous operation with an electro-dialyzers stacked system. When HNO3 and NaOH solutions from the effluent solution of NaNO3 after the treatment of uranium oxide waste were recovered by the electrodialysis system, the energy consumption required to treat the same amount of feed solution decreased with decreases in the applied current and in the applied voltage, even though it took a longer time. The electrodialysis yield to recover HNO3 and NaOH was proportional to the total electricity supplied in the system, regardless of whether the constant current or constant voltage operation mode was used. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25867277

Study on electrolytic recoveries of carbonate salt and uranium from a uranyl peroxo carbonato complex solution generated from a carbonate-leaching process / Kwang-Wook Kim in Industrial & engineering chemistry research, Vol. 48 N°4 (Février 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - p. 2085–2092 Titre : Study on electrolytic recoveries of carbonate salt and uranium from a uranyl peroxo carbonato complex solution generated from a carbonate-leaching process Type de document : texte imprimé Auteurs : Kwang-Wook Kim, Auteur ; Yeon-Hwa Kim, Auteur ; Se-Yoon Lee, Auteur Année de publication : 2009 Article en page(s) : p. 2085–2092 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Electrolytic  decarbonation  Carbonate  salt  Uranium Résumé : This work studied an electrolytic decarbonation by using an electrolytic system consisting of a cation exchange membrane-equipped cell and a gas absorber for simultaneous recoveries of carbonate salt and uranium from a uranium-bearing carbonate solution generated from a uranium leaching process using carbonate and hydrogen peroxide. The system was effective for the recoveries of carbonate salt and uranium as a precipitate of uranium peroxide hydrate from the solution and for a treatment of the residual hydrogen peroxide in the solution. The existence of uranium and hydrogen peroxide in a carbonate solution did not affect the electrolytic recovery characteristics of the carbonate salt from the solution. The behavior of the voltage or current during the electrolysis in the system could be explained by the characteristics of change of the species generated depending on the pH in the anodic and cathodic chambers. In the system, the constant current operation was better than the constant voltage operation from the energy consumption point of view. The electrolytic method used in this work for the recovery of carbonate salt from a carbonate-leaching solution containing uranium was evaluated to be environmentally friendly because it could minimize the generation of secondary wastes. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800990r [article] Study on electrolytic recoveries of carbonate salt and uranium from a uranyl peroxo carbonato complex solution generated from a carbonate-leaching process [texte imprimé] / Kwang-Wook Kim, Auteur ; Yeon-Hwa Kim, Auteur ; Se-Yoon Lee, Auteur . - 2009 . - p. 2085–2092. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - p. 2085–2092 Mots-clés : Electrolytic  decarbonation  Carbonate  salt  Uranium Résumé : This work studied an electrolytic decarbonation by using an electrolytic system consisting of a cation exchange membrane-equipped cell and a gas absorber for simultaneous recoveries of carbonate salt and uranium from a uranium-bearing carbonate solution generated from a uranium leaching process using carbonate and hydrogen peroxide. The system was effective for the recoveries of carbonate salt and uranium as a precipitate of uranium peroxide hydrate from the solution and for a treatment of the residual hydrogen peroxide in the solution. The existence of uranium and hydrogen peroxide in a carbonate solution did not affect the electrolytic recovery characteristics of the carbonate salt from the solution. The behavior of the voltage or current during the electrolysis in the system could be explained by the characteristics of change of the species generated depending on the pH in the anodic and cathodic chambers. In the system, the constant current operation was better than the constant voltage operation from the energy consumption point of view. The electrolytic method used in this work for the recovery of carbonate salt from a carbonate-leaching solution containing uranium was evaluated to be environmentally friendly because it could minimize the generation of secondary wastes. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie800990r