Abstract
AbstractDye contaminated wastewaters show serious harm to the environment, and therefore, they have been becoming the focus of environmental protection and scientific research. In this study, the removal of reactive black dye from the contaminated solution was investigated by photo Fenton‐like degradation process using ZnO‐based composite catalysts. Ag/ZnO and Fe2O3/zeolite/ZnO composites show the more efficient catalysts with degradation efficiencies of about 99%. The effects of four different process parameters on the degradation efficiency of reactive black dye, and the simultaneous interactions between the parameters were investigated using the Box–Behnken design (BBD) of response surface method (RSM). Maximum removal efficiency of 99% is obtained in pH = 3, dye concentration of 10 ppm, 0.05‐g dose of catalyst and 40°C reaction temperature. The removal efficiency of Fe2O3/zeolite/ZnO catalyst after four replicating experiments is 63%. Based on the reported results, the prepared catalyst can be used efficiently in the wastewater treatment industries.
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