Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4980163 | Journal of Hazardous Materials | 2016 | 6 Pages |
Abstract
Diazo dye Congo Red (CR) solutions at 100Â mg/L, were degraded using different supporting electrolytes in an electrochemical advanced oxidation process (EAOPs), like the anodic oxidation (AOx/BDD). All experiments were carried out in a 3Â L flow reactor with a Boron-doped diamond (BDD) anode and stainless steel cathode (AISI 304), at 7.5, 15, 30 and 50Â mA/cm2 current densities (j). Furthermore, each experiment was carried out under a flow rate of 7Â L/min. Additionally, HClO4, NaCl, Na2SO4, and H2SO4 were tested as supporting electrolytes at a 50Â mM concentration. The degradation process was at all times considerably faster in NaCl medium. Solutions containing SO42â or ClO4â ions were less prompted to degradation due to the low oxidation power of these species into the bulk. Dissolved organic carbon (DOC) analysis, was carried out to evaluate the mineralization of CR. The degradation of CR, was evaluated with the HPLC analysis of the treated solutions.
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Authors
H. Jalife-Jacobo, R. Feria-Reyes, O. Serrano-Torres, S. Gutiérrez-Granados, Juan M. Peralta-Hernández,