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