Abstract
The photocatalytic decolorization and mineralization of reactive azo-based dye, Eriochrome Black T (EBT) using ZnO catalyst were investigated under UV-irradiation. In the present study, response surface methodology (RSM) based on central composite design (CCD) was applied for optimizing three independent variables (e.g., ZnO dosage, initial concentration of EBT dye and solution pH), which significantly affected the removal efficiency of EBT. Then the adequacy of the developed model was further evaluated via analysis of variance (ANOVA). In the optimum processing conditions (0.3g/L of ZnO loading, initial concentration of EBT of 25mg/L and solution pH of 7.91), this proposed method was successfully decolorized 83% of EBT using ZnO catalyst under 96W of UV-irradiation for 20min. In addition, it was found that a highly significant quadratic model (p-value<0.0001, R2=0.9743) was derived from the response surface. According to our ANOVA results, first-order and second-order effects of ZnO loading, EBT concentration and pH of reaction medium played a crucial role in photocatalytic-mineralization of EBT.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
