Electrochemical treatment of a graphitic forging lubricant effluent: The effect of chloride concentration and current density

The graphite removal and the chemical oxygen demand (COD) reduction by the electrochemical treatment of an effluent containing a lubricant (oil in water emulsion with graphite) was investigated. The electrochemical cell used a pair of aluminum plates. Since the effluent conductivity was very low, Na...

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Bibliographic Details
Published in:	Separation science and technology Vol. 51; no. 1; pp. 126 - 134
Main Authors:	Borsa, Maria Beatriz, Jungblut, Ricardo, Pérez-Herranz, Valentín, Müller, Iduvirges Lourdes, Bernardes, Andrea Moura, Bergmann, Carlos Pérez
Format:	Journal Article
Language:	English
Published:	Taylor & Francis 02-01-2016
Subjects:	aluminum Chemical oxygen demand Chlorides COD Current density Effluents Electrocoagulation Electrodes Graphite graphitic forging lubricant effluent Lubricants Reduction (electrolytic)
Online Access:	Get full text
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Summary:	The graphite removal and the chemical oxygen demand (COD) reduction by the electrochemical treatment of an effluent containing a lubricant (oil in water emulsion with graphite) was investigated. The electrochemical cell used a pair of aluminum plates. Since the effluent conductivity was very low, NaCl was used as supporting electrolyte and different current densities as well as different distance between the electrodes were applied. In lower current densities, higher chloride concentrations implied in smaller COD values. The same behavior was observed when electrode distance was decreased. All the tested conditions presented significant graphite removal and COD reductions larger than 94%.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0149-6395 1520-5754
DOI:	10.1080/01496395.2015.1086799