Electrochemical reduction and oxidation pathways for Reactive Black 5 dye using nickel electrodes in divided and undivided cells

Decontamination of wastewaters containing synthetic organic dyes by electrochemical methods. An updated review

“…The positive action of light can be explained by: (i) the quicker Fe 2+ regeneration and 1673 higher generation of homogeneous • OH from photoreduction of Fe(OH) 2+ , the pre-eminent Fe 3+ 1674 species at pH near 3, by photo-Fenton reaction (61) Adapted from ref. [61]. 2363 M a n u s c r i p t Table 1 Percentage of color removal and COD decay for the electrocoagulation with Fe and/or Al anodes of several synthetic dyes solutions containing NaCl or Na 2 SO 4 under selected conditions at ambient temperature or 25 ºC.…”

Electrochemical removal of Reactive Black 5 azo dye using non-commercial boron-doped diamond film anodes

“…RB5 has been chosen as a model organic pollutant by a number of researchers, and details are available concerning degradation of the dye by electro-assisted Fenton and Fentonlike oxidation [4,[22][23][24][25], photo-electrochemical [26,27] and electro-coagulation [28] processes, electrochemical reduction [29][30][31][32], and electrochemical oxidation with Ti/SnO2-SbPt [3], Pt [33], graphite [34] and Pt/Ti [35] electrodes. However, very few studies have focused on the application of BDD as electrodic material for the removal of RB5.…”

Hydrogen production and simultaneous photoelectrocatalytic pollutant oxidation using a TiO2/WO3 nanostructured photoanode under visible light irradiation

“…25 The presence of byproducts detected even after 150 min of treatment indicates that recalcitrant material was obtained after 120 min of treatment.…”