Photocatalytic degradation of 4-Nitrophenol as a model contaminant in a quartz tubular continuous-flow photoreactor with supported TiO2 nanoparticles by heat attachment method

فاقد چكيده

Advanced oxidation processes (AOPs) are attractive alternatives to non-destructive physical water treatment processes, such as adsorption on activated carbon, flocculation and electrocoagulation, air stripping or desorption and membrane processes. The last techniques merely transport contaminants from one phase to another causing secondary pollution and requiring further treatment, whereas AOPs are able to mineralize aqueous organic contaminants. In this work, for more studying about the application of AOPs for water and wastewater treatment on an industrial scale, we have described the performance of a tubular continuous–flow photoreactor with supported TiO2 catalyst by heat attachment method on glass plate. The removal efficiency of 4-Nitrophenol (4-NP) as a model organic contaminant was tested in continuous-flow photoreactor at different operational parameters. The removal efficiency of 4-NP depend on the operational parameters such as photoreactor length, liquid volumetric flow rate, gas volumetric flow rate, initial pollutant concentration and initial pH of solution.