| Optimization of Photocatalytic COD Removal from Spent Caustic Wastewater Using Combination of Response Surface Methodology and Genetic Algorithm |
| کد مقاله : 1006-IWWA |
| نویسندگان |
|
جواد محبوبنسب * Department of Chemical Engineering, Arv.C., Islamic Azad University, Abadan, Iran. |
| چکیده مقاله |
| Spent caustic wastewater is one of the most challenging wastewaters in the petrochemical industry, which due to high COD, high alkalinity, and sulfide content, its treatment by conventional methods faces serious limitations. In this study, a combination of RSM and GA was used to optimize the photocatalytic COD removal process from spent caustic wastewater of an olefin unit. the GA was implemented using the Optimization Toolbox of MATLAB software (version R2018a). for this purpose, a second-order response surface model was extracted based on the experimental data of 30 BBD experiments from the reference article. Then, the genetic algorithm with a population size of 50 and 100 generations was employed to find the optimal operating conditions including catalyst loading, pH, oxidant dosage, and aeration rate. The results showed that the genetic algorithm was able to increase the COD removal efficiency from 79.58% in the RSM method to 81.88%, which is equivalent to an improvement of 2.88%. The optimal conditions obtained included catalyst loading of 1.505 g/L, pH of 7.935, oxidant dosage of 300 ppm, and aeration rate of 3.266 L/min. Correlation matrix analysis revealed that aeration rate (0.3902) and catalyst loading (0.3377) had the highest positive correlation with COD removal percentage. The findings of this study indicate that the genetic algorithm, as a meta-heuristic method, has the capability to improve the performance of photocatalytic treatment processes and can be used as an efficient method alongside classical optimization approaches. |
| کلیدواژه ها |
| COD removal, Response Surface Methodology (RSM), Genetic Algorithm (GA), Optimization, Photocatalytic process, Spent caustic wastewater. |
| وضعیت: پذیرفته شده برای ارسال فایل های ارائه پوستر |
