(Daneshvar et al., 2006DANESHVAR, N.; OLADEGARAGOZE, A.; DJAFARZADEH, N. Decolorization of basic dye solution by electrocoagulation: An investigation of the effect of operational parameters. Journal of Hazardous Materials, v. 129, p. 116-122, 2006. https://doi.org/10.1016/j.jhazmat.2005.08.033
https://doi.org/10.1016/j.jhazmat.2005.0...
) |
Almost 100% of color removal from dye mixture |
6 a 8 mA cm-2; Batch experiments; 5 min of electrolysis; 250 mL dye solution treated |
(Song et al., 2007SONG, S.; HE, S.; QIU, J.; XU, L.; CHEN, J. Ozone assisted electrocoagulation for decolorization of C.I. Reactive Black 5 in aqueous solution: An investigation of the effect of operational parameters. Separation and Purification Technology, v. 55, p. 238-245, 2007. https://doi.org/10.1016/j.seppur.2006.12.013
https://doi.org/10.1016/j.seppur.2006.12...
) |
Color removal of 94% and more than 60% of COD from Reactive Black 5 dye solution |
10 mA cm-2 associated with 20 mL min-1 of ozone flow rate; Batch experiments with continuous ozone feed; 15 min of time reaction; 250 mL of dye solution treated (treatment efficiency evaluated after samples centrifugation) |
(Yuksel et al., 2011YUKSEL, E.; GURBULAK, E.; EYVAZ, M. Decolorization of a Reactive Dye Solution and Treatment of a Textile Wastewater by Electrocoagulation and Chemical Coagulation: Techno-Economic Comparison. Environmental Progress & Sustainable Energy, v. 31, p. 524-535, 2011. https://doi.org/10.1002/ep.10574
https://doi.org/10.1002/ep.10574...
) |
Color removal of 99.9% from Reactive Yellow RY 135 solution |
4 mA cm-2; Batch experiments; 1.5 L of dye solution treated; 10 min of electrolysis |
(Merzouk et al., 2010MERZOUK, B.; MADANI, K.; SEKKI, A. Using electrocoagulation-electroflotation technology to treat synthetic solution and textile wastewater, two case studies. Desalination, v. 250, p. 573-577, 2010. https://doi.org/10.1016/j.desal.2009.09.026
https://doi.org/10.1016/j.desal.2009.09....
) |
89.6% of turbidity removal from synthetic wastewater |
11.55 mA cm-2; Batch experiments; 10 min of electrolysis; 1 L of wastewater treated |
| 85.5% of SS, 76.2% of turbidity, 88.9% of BOD, 79.7% of COD and 93% of color removal from real textile wastewater |
(Mondal et al., 2013MONDAL, B.; SRIVASTAVA, V. C.; KUSHWAHA, J. P.; BHATNAGAR, R.; SINGH, S.; MALL, I. D. Parametric and multiple response optimization for the electrochemical treatment of textile printing dye-bath effluent. Separation and Purification Technology, v. 109, p. 135-143, 2013. https://doi.org/10.1016/j.seppur.2013.02.026
https://doi.org/10.1016/j.seppur.2013.02...
) |
99.7% of color removal and 94% of COD removal from an azo dye solution |
19.51 mA cm-2; Batch experiments; 102 min of electrolysis; 2 L of textile wastewater treated |
(Valero et al., 2008VALERO, D.; ORTIZ, J. M.; EXPÓSITO, E.; MONTIEL, V.; ALDAZ, A. Electrocoagulation of a synthetic textile effluent powered by photovoltaic energy without batteries: direct connection behavior. Solar Energy Materials & Solar Cells, v. 92, p. 291-297, 2008. https://doi.org/10.1016/j.solmat.2007.09.006
https://doi.org/10.1016/j.solmat.2007.09...
) |
Color removal of 99.3% from Remazol Red RB 133 dye solution |
10 mA cm-2; Continuous electrochemical reactor; 250 mL of dye solution; 23 min of electrolysis |
| Current Paper |
Better Results: Color removal of 90.25% and concentration of residual iron of 8.2 mg L-1. |
3.31 mA cm-2 associated with 550 mg L-1 of Moringa Oleífera Lam coagulant; continuous electrochemical reactor;
16 L of dye solution treated; 5 min of electrolysis |
| Overall optimized conditions: Color removal of 71.38% and concentration of residual iron of 5.2 mg L-1. |
0.93 mA cm-2 associated with 1000 mg L-1 of Moringa Oleífera Lam coagulant. Continuous electrochemical reactor; 16 L of dye solution treated; 5 min of electrolysis. |
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