Oxidation and coagulation removal of COD from landfill leachate by Fered–Fenton process

Modeling the Fenton Depuration of the Effluent from a Slaughterhouse based on Design of Experiments

“…It is worth to notice that the required concentration of peroxide to maximize the removal efficiency is always on its minimum value. The removal process, involves chemical oxidation and coagulation, the last one because ferric hydroxocomplexes are formed [12][13][14][15][16]. This observation is confirmed throughout different points of the process: a) the presence of flocs which at the end are measured as settled solids (approximately 30 mL L , Fe t and Fe 3+ indicates that iron is removed from the solution [17].…”

Optimizing Operating Conditions for Advanced Treatment of Landfill Leachate Using the Coagulation-Fenton Oxidation Method

“…We can see in Table 5 that for COD removal rate the linear terms of the independent variables B (p = 0.04 < 0.04), C (p = 0.0011 < 0.0011), the quadratic terms BC (p = 0.0498 < 0.0498), and B2 (p = 0.0212 < 0.05) are significant items. Thus we can conclude that in the advanced treatment of landfill leachate with Fenton oxidation-coagulation method, the factors influencing the COD removal are ordered as, H 2 ), more ·OH will be produced, which can increase the reaction rate, enhance the capacity of oxidation, degrade the organic matter efficiently, and greatly improve the removal rate of COD. While for PFS, which is a composite coagulation made up of elemental iron or iron oxide and other iron compounds, the PFS remaining in the water after coagulation has little effect on Fe 2+ content.…”

Optimization for Fenton Process in Removal of COD for Landfill Leachate Treatment

“…As for the concentration of reactants [10], [25] establish an optimal ratio of H 2 O 2 /Fe (II) between 1.5-3. In this particular case, the ratio with greater efficiency was obtained with values of 1 and 0.5, achieving removals of 80% and 79.45% respectively (Fig.…”