Chemical scrubbing Microfiltration Packing material TiO2 Central composite design Biodegradation Electroreduction Electrochemical oxidation Absorption Toluene Biosorption Disinfection VOC Response surface methodology Combined processes Carbamazepine Optimization Biomass Wastewater H2S Electrocoagulation Persulfate Synergetic effect Volatile organic compounds Membrane Sulfamethazine Photocatalysis Degradation Cyclic voltammetry Cleaning Kinetics Pesticides Fenton Toxicity Ultrafiltration Biogas Biological treatment Adsorption Biofiltration Modeling Wastewater treatment Antibiotics Nanoparticles Kinetic models Electro-Fenton process Ionic liquids Isotherm Ozone Ageing Water Heavy metals Biodegradability Tetracycline Azo dyes Ethanol Advanced oxidation processes Modelling Coupling process Soil Continuous reactor Fermentation Removal Magnetite Metronidazole Sorption DFT Activated sludge Characterization Air treatment Environment Silicone oil Mass transfer Dyes Methylene blue Nanofiltration Activated carbon Mineralization Hydrophobic VOC Chemical oxidation Water treatment Dye Clofibric acid Polyamide Filtration Oxidation Carbon felt electrode Graphite felt Desalination Organic solvent nanofiltration Hydrogen peroxide Isotherms Volatile organic compound Azo dye Kinetic Advanced oxidation process Combined process Electro-Fenton Fouling VOCs Mass-transfer