Recovery by acid leaching of vanadium contained in spent catalysts
Keywords:
exhausted catalysts, acid leaching, sulfuric acid, vanadium recovery.Abstract
In the production of sulfuric acid by the contact method, catalysts with more than 4 % vanadium pentoxide are used, which go out of service once they are completely exhausted. In the present work, the recovery, by acid leaching, of the vanadium contained in exhausted catalysts from the Patricio Lumumba Factory was evaluated. A full factorial design of experiments was carried out (23) where the following were analyzed as independent variables: temperature, solid/liquid ratio and sulfuric acid concentration and as dependent variables: vanadium concentration and leaching performance. The processing allowed obtaining a liquid phase composed of the sulfates of the metals leached with sulfuric acid, which have vanadium concentrations between 1,448 mg/l and 3,730 mg/l. The evaluated processing allows, from the liquid phase obtained, recovering the vanadium for its industrial use, where the solid waste generated is not polluting, which is favorable for the protection of the environment.Downloads
References
Agencia Cubana de Noticias (ACN). 2015: Juraguá: Sede del Confinatorio Nacional de Desechos. 11 diciembre 2015. Disponible en: http://www.acn.cu/medio-ambiente/14909-juragua-sede-del-confinatorio-nacional-de-desecho. Consultado: 2020/01/29.
Alonso, F.; Ramírez, S.; Ancheyta, J. y Mavil, M. 2008: Alternativas para la recuperación de metales a partir de catalizadores gastados del hidrotratamiento de hidrocarburos pesados: Un caso de estudio. Rev. Int. Contam. Ambient., 24(2): 55-69.
Anuario Estadístico. 2019: Anuario estadístico de Cuba 2018. Capítulo 11: Industria Manufacturera. La Habana: Oficina Nacional de Estadística e Información. 14 p.
Baran, E. J. 2017: Vanadio: Un nuevo elemento estratégico. Anales Acad. Nac. de Cs. Ex., Fís. y Nat., 69: 84-114.
Drużyński, S.; Mazurek, K. and Białowicz, K. 2014: The use of ion exchange in the recovery of vanadium from the mass of a spent catalyst used in the oxidation of SO2 to SO3. Polish Journal of Chemical Technology, 16(2): 69-73.
Chambergo, J. C.; Valverde, Q.; Pachas, A. A. y Yépez, H. 2017: Estudio del comportamiento fluido-dinámico de un agitador a escala reducida mediante simulación numérica. Información Tecnológica, 28(3): 37-46.
Confinatorio Nacional. 2018: Confinatorio Nacional de Desechos Peligrosos. Informe Técnico. Empresa Química de Cienfuegos. 4 p.
Erust, C.; Akcil, A.; Bedelova, Z.; Anarbekov, K.; Baikonurova, A. and Tuncuk, A. 2016: Recovery of vanadium from spent catalysts of sulfuric acid plant by using inorganic and organic acids: Laboratory and semi-pilot tests. Waste Management, 49: 455–461.
Genck, W. J. 2007. Liquid-Solid Operations and Equipment. Section 18. En: Perry´s Chemical Engineer´s Handbook. 8th Edition. McGraw-Hill. 151 p.
González, L. A. 2012: Disposición final del catalizador pentóxido de vanadio por fijación en una escoria metalúrgica. Tesis de maestría. Universidad Nacional de Ingeniería. 126 p.
Granger-Brown, G. 1988: Operaciones básicas de la ingeniería química. Tomo II. 2da ed. La Habana: Edición Revolucionaria.
Harvey, D. 2000: Modern Analytical Chemistry. Boston: McGraw-Hill. 798 p.
Marinov, M. and Paunova, R. 2003: Direct alumothermic obtaining of vanadium alloys out of worked-off vanadium catalysts. University of chemical technology and metallurgy. Bulgaria. p. 283-288.
Mohanty, J.; Rath, P. C.; Bhattacharya, I. N. and Paramguru, R. K. 2011: The recovery of vanadium from spent catalyst: a case study. Mineral Processing and Extractive Metallurgy, 120(1): 56-60.
Perdomo, L.; Quintana, R.; Perdomo, L. A. y Mollineda, Á. 2019: Recuperación de elementos metálicos desde catalizadores de vanadio agotados aplicando lixiviación ácida. Minería y Geología, 35(3): 311-326.
Pernett, L.; Ochoa, I. A.; Robledo, M. E. y Rueda, C. A. 2016: Modelamiento y simulación de un reactor catalítico para la oxidación de SO2 a SO3, utilizando V2O5 como catalizador. Prospect, 14(1): 39-46.
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