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