Enhanced treatment of landfill leachate wastewater using sono(US)-ozone(O3)–electrocoagulation(EC) process: role of process parameters on color, COD and electrical energy consumption

The evolution patterns of temperature, pH, and voltage during the removal of chemical oxygen demand from a landfill leachate using electrocoagulation under different conditions

“…In a recent study to remove COD from a landfill leachate, sonication, electrocoagulation, and ozonization were used individually and also in collective hybrid systems where EC proved to be more efficient with almost 70% removal efficiency. Interestingly, they also reported higher removal efficiencies for hybrid systems including EC, too [48]. In the present study the highest removal efficiency was measured to be 47%.…”

“…4-plate and 6-plate Fe electrodes consumed 22.1 and 31.3 kJ electrical energy, whereas 19.9 and 25.3 kJ electrical energy was consumed for Al electrodes of the same numbers. The linear correlation between voltage and energy consumption has been also parametrically investigated in another study with similar results [48].…”

“…In addition to COD removal efficiency, EC showed a much lower energy consumption (7.62 kWh m -3 ) compared to sonication, ozonation, and their hybrid systems. It must be noted that, for optimization purposes, hey maintained the pH using additional acid and base, and improved the electrolyte by adding NaCl solution [48]. However, in the current study no additional substance was introduced into the medium.…”

Comparative and Equilibrium Studies on Anionic and Cationic Dyes Removal by Nano-Alumina-Doped Catechol Formaldehyde Composite

“…As the adsorption technique has high-quality treatment processes, it was favored for the expulsion of toxins, for example, dyes. Also, this technique is most desirable for dye removal because of its smooth operation, simpler design setup [13][14][15][16][17][18][19].…”

Clinoptilolite augmented electrocoagulation process for the reduction of high‐strength ammonia and color from stabilized landfill leachate

“…On the other hand, physical and chemical processes require chemicals in their operations. The advanced oxidation process (AOP) such as the electrocoagulation technique has many advantages as it can convert the organic materials within the water into stable inorganic compounds like water, carbon dioxide, and salts (Asaithambi et al, 2020; Gautam et al, 2019; Özyurt & Camcıoğlu, 2018). The process is generally rapid, requires a small footprint, theoretically does not introduce new hazardous substances into water, and no sludge production as with chemical or biological processes.…”