Caracterización de un reactor electroquímico operando en modo galvanostático para la recuperación de baños agotados de mordentado/Characterization of an electrochemical reactor operating in galvanostatic mode for recovering of exhausted etching baths

In the treatment of the exhausted etching baths of metallic plastics industries, electrochemical reactors filter press type, at a pilot scale are used for the recovery of hexavalent chromium, through the oxidation of trivalent chromium on an lead anode. This research focused on the study of a reacto...

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Bibliographic Details
Published in:Ingeniare : Revista Chilena de Ingenieria 2015-04, Vol.23 (2), p.285
Main Authors: Pineda, Henry Reyes, Hernández, Leidy Carolina Cardona, Herranz, Valentín Pérez
Format: Article
Language:Spanish
Subjects:
Chemical reactors
Chromium
Plating
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Summary:In the treatment of the exhausted etching baths of metallic plastics industries, electrochemical reactors filter press type, at a pilot scale are used for the recovery of hexavalent chromium, through the oxidation of trivalent chromium on an lead anode. This research focused on the study of a reactor having three separate compartments, in order to study their behavior when operating in galvanostatic mode, at 4 and 8 A, with real etching bath solutions. The following basic parameters for the design of electrochemical reactors were evaluated: electrical performance, the degree of reached conversion, the specific productivity and specific energy consumed by coupling the electrochemical reactor with one and two ceramic spacers, elaborated with 250 kg/cm2 and 0% of starch content, resulting in a reactor with adequate performance for which there is less operation time assigned, good productivity and low power consumption when operating at 8 A.
ISSN:0718-3291
0718-3305