Magnetite Ultrafiltration Electro-Fenton Kinetic Metronidazole Oxidation Cleaning Photocatalysis Sodium hypochlorite Toluene TiO2 Air treatment Modelling Azo dyes Isotherms Packing material Advanced oxidation processes Antibiotics Graphite felt Activated sludge Degradation Kinetics Nanoparticles Activated carbon Response surface methodology Prediction Volatile organic compounds Fouling Water Ageing Modeling Photocatalytic degradation Characterization Mineralization Electro-Fenton process Phenol Azo dye Biological treatment Nanofiltration Microfiltration Optimization Toxicity DFT Biosorption Silicone oil Combined processes Ionic liquids Simulation Fixed bed Partition coefficient Pesticides Water treatment Mass transfer Pollution Hydrogen peroxide Phenolic compounds Chemical scrubbing Chemical oxidation Clofibric acid Electrocoagulation Polyamide Electrochemical oxidation Wastewater Biofiltration Methylene blue Mass-transfer Reverse osmosis Central composite design Continuous reactor Removal Sulfamethazine Organic solvent nanofiltration Soil Sorption Membrane Heavy metals Combined process Ozone Isotherm Biodegradation Biomass Advanced oxidation process Wastewater treatment Cyclic voltammetry Kinetic modeling Kinetic models PH Dyes Filtration Adsorption Tetracycline VOC Biodegradability Hydrophobic VOC Persulfate Absorption Fermentation VOCs Carbon felt electrode Synergetic effect