A Comparative Study on the Textile Effluent Decolourization by Using Synthesized Nano Particle and Procured Nano Particle

Semiconductor photocatalysis often leads to partial or complete mineralization of organic pollutants. Upon irradiation with UV/visible light, semiconductors catalyze redox reactions in presence of air/O2 and water. Here, the potential of a common semiconductor, ZnO, has been explored as an effective catalyst for the photodegradation of textile effluent. The effects of process parameters like, catalyst loading, initial dye concentration and pH on the extent of photo degradation have been investigated. It is difficult to give a general picture of the kinetics using these wastewaters but the process was found to be quite effective for the decolourization of textile waste water. In this work, a detailed investigation was done on photocatalytic degradation for selected textile effluent. The ZnO nano particle was synthesized by using fuel urea by solution combustion method. This nano particle was characterized by using X-ray diffraction (XRD), Scanning Electron Micrograph (SEM) and UV absorbance spectroscopy. The average size was found to be 41 nm. The band gap of the nano particle was found to be 3.2 eV and was tested for the photocatalytic degradation by varying parameters such as catalyst concentration, pH and dye concentration. Also, the efficiency of the synthesized nano particle was compared with the procured TiO2 of size < 25 nm.