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