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Artículo

Electrochemical removal of cadmium from dilute aqueous solutions using a rotating cylinder electrode of wedge wire screens

Grau, Javier MarioIcon ; Bisang, Jose MariaIcon
Fecha de publicación: 02/2007
Editorial: Springer
Revista: Journal of Applied Electrochemistry
ISSN: 0021-891X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ingeniería Química

Resumen

Rates of mass transfer at rotating cylinder electrodes of wedge wire screens were studied by measuring the limiting current for the cathodic reduction of ferricyanide as test reaction. The experimental data are well correlated by an empirical expression between the Sherwood number and the Reynolds number, both in terms of the internal slot opening as characteristic length, and including two additional dimensionless parameters in order to characterize the geometry of the screens. The performance of an undivided electrochemical batch reactor with a rotating cylinder cathode of wedge wire screens was tested analyzing the cadmium removal from dilute solutions. The effect of cathodic applied potential and size of the screen is studied. Taking into account the residual cadmium concentration the best results were obtained for a cathode potential of -1.1 V vs. SCE at 700 rpm, where the cadmium concentration decreased from 54 to 0.9 mg l-1 after 30 min of electrolysis with a specific energy consumption of 10.7 kWhkg-1 and a normalized space velocity of 3.54 h-1.
Palabras clave: Electrochemical Reactor , Mass Transfer , Rotating Cylinder Electrode , Three-Dimensional Electrodes
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/66133
URL: https://link.springer.com/article/10.1007/s10800-006-9254-4
DOI: http://dx.doi.org/10.1007/s10800-006-9254-4
Colecciones
Articulos(CCT - SANTA FE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Articulos(INCAPE)
Articulos de INST.DE INVEST.EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Citación
Grau, Javier Mario; Bisang, Jose Maria; Electrochemical removal of cadmium from dilute aqueous solutions using a rotating cylinder electrode of wedge wire screens; Springer; Journal of Applied Electrochemistry; 37; 2; 2-2007; 275-282
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