عنوان مقاله [English]
In this research, the efficiency of the photocatalytic process of zinc oxide nanoparticles in removing Basic Red 46 azo dye from the aqueous solution has been investigated in a batch system, exposed to UV light with a power of 15 W. Also, the number of samples and data analysis were predicted using design expert software. According to the results, with increasing the initial concentration of the dye solution, the percentage of photocatalytic degradation decreases, and with enhancing the catalyst concentration to an optimal value equal to 1 g/L, the removal efficiency of the dye increases. In addition, the percentage of dye removal is directly related to the duration of radiation. According to the analysis of the results in the design expert software, the maximum removal of the Basic Red 46 azo dye was obtained at pH =11 and the contaminant concentration was 45 mg/L with an amount of 0.61 g/L of zinc oxide as catalyst in 86 minutes.