Electrocoagulation treatment of the food dye waste industry: Theoretical and experimental study

Abstract

The performance of the electrocoagulation treatment of synthetic food dye waste industry was studied using iron anode. The influence of several parameters as electrolysis current, chloride concentration, electrolysis time and pH was investigated. In order to verify these factors and their impact on the discoloration efficiency, an experimental design model was established. The mathematical model was created using a rotatable, uniform and central composite design. This model described the color removal efficiency and the energy consumption according to the studied parameters. The graphical representation of the model according to the parameters allowed us to define optimal treatment conditions. The optimal values of electrolysis current, chloride concentration, electrolysis time and pH were respectively 14.4 mA/cm 2 , 5.76 g/L, 39 mn and 7. 94.52% of color removal efficiency is achieved with an energy consumption of 3.90 KWh/m 3 .

Recent Applications of the Electrocoagulation Process on Agro-Based Industrial Wastewater: A Review

“…The role of electrolyte support is to increase conductivity [73]. Therefore, the voltage applied between the electrodes at a constant current density due to the decrease in the resistance of the polluted water can be reduced [74]. Some of the electrolyte supports that have been used for the electrochemical process include NaCl, Na 2 SO 4 , and NaCO 3 , etc.…”

Simultaneous Decolorization of Tartrazine and Production of H2 in a Combined Electrocoagulation and Photocatalytic Processes using CuO-TiO2 Nanotube Arrays: Literature Review and Experiment

“…The electrocoagulation process, a combination of coagulation, flotation, and electrochemistry, is the coagulation of colloidal particles (pollutants) in water or wastewater in the application of electric current generated from direct current (DC) power (Syaichurrozi et al, 2021). This method is widely used to treat wastes originating from a wide range of industries such as food (Byoud et al, 2017), dyes (Anantha Singh, & Ramesh, 2013), and distillery spent wash (Syaichurrozi et al, 2021). The process consists of three steps, namely electrolysis, coagulation, and flotation (Hashim et al, 2020).…”