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