Hexavalent Chromium Reduction at the Polypyrrole-Coated 304-Stainless-Steel-Electrode in a Filter-Press-Type Reactor
Por:
Villalobos-Neri, E. E., Paramo-Garcia, U., Hernandez-Escotoz, H., Mayen-Mondragon, R., Gallardo-Rivas, V, N.
Publicada:
1 oct 2021
Categoría:
Electrochemistry
Resumen:
In this work, the reduction of Cr(VI) to Cr (III) in a filter-press-type
electrochemical-reactor is studied. The working electrode within the
reactor is a polypyrrole-coated 304-stainless-steel plate. The
polypyrrole was electropolimerized via 40 cyclic-voltammetry cycles. The
deposit was characterized by Fourier Transform Infrared Spectroscopy,
Optical Microscopy and Scanning Electron Microscopy. The Cr(VI)-ions
solution was recirculated within the filter-press-type reactor and its
concentration was monitored via the 1,5-diphenylcarbazide colorimetric
technique. It was proposed that the Cr(VI)removal process consists of a
mechanism combining ion transport between the solution stream and the
electrode, and reduction of Cr(VI) at the electrode. A mathematical
model was then derived to describe the Cr(VI) evolution within the
solution stream, and at the PPY electrode-layer. The model was validated
with experimental data.
Filiaciones:
Villalobos-Neri, E. E.:
Tecnológico Nacional de México/I. T. Cd. Madero, Centro de Investigación en Petroquímica, Prol. Bahía de Aldhair y Av. de las Bahías, Parque de la Pequeña y Mediana Industria, Altamira, Tamaulipas 89600, Mexico
Gallardo-Rivas, N
Paramo-Garcia, U.:
Tecnológico Nacional de México/I. T. Cd. Madero, Centro de Investigación en Petroquímica, Prol. Bahía de Aldhair y Av. de las Bahías, Parque de la Pequeña y Mediana Industria, Altamira, Tamaulipas 89600, Mexico
(Corresponding Author), Tecnol Nacl Mexico, IT Cd Madero, Ctr Invest Petroquim, Prol Bahia Aldhair & Av Bahias, Altamira 89600, Tamaulipas, Mexico
Gallardo-Rivas, N
Hernandez-Escotoz, H.:
Universidad de Guanajuato, Departamento de Ingeniería Química, Noria Alta s/n, Guanajuato, 36050, Mexico
(Corresponding Author), Univ Guanajuato, Dept Ingn Quim, Noria Alta S-N, Guanajuato 36050, Gto, Mexico
Univ Guanajuato, Dept Ingn Quim, Noria Alta S-N, Guanajuato 36050, Gto, Mexico
Mayen-Mondragon, R.:
Polo Universitario de Tecnología Avanzada, Facultad de Química, Universidad Nacional Autónoma de México, Vía de la Innovación 410,Autopista MTY-Aeropuerto Km. 10,Parque PIIT, Apodaca, Nuevo León 66629, Mexico
Univ Nacl Autonoma Mexico, Polo Univ Tecnol Avanzada, Fac Quim, Via Innovac 410,Autopista MTY Aeropuerto Km 10, Apodaca 66629, Nuevo Leon, Mexico
Gallardo-Rivas, V, N.:
Tecnológico Nacional de México/I. T. Cd. Madero, Centro de Investigación en Petroquímica, Prol. Bahía de Aldhair y Av. de las Bahías, Parque de la Pequeña y Mediana Industria, Altamira, Tamaulipas 89600, Mexico
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