| Abstrakt: |
This work aims to study the ability of using separated and integrated EC/PEF mode in order to treat textile industry wastewater and the results of them were compared. To achieve this goal, the electrocoagulation process was initially investigated using the Box-Behnken design method. After optimizing the process, the optimal pH, reaction time, and electric current intensity were found to be 6, 16.5 min, and 0.584 A, respectively. Moreover, with the optimized conditions, removal efficiencies of 96% and 70% were achieved for TSS and COD, respectively. This means that the COD was reduced from 538 to 155 mgL−1 and the TSS was reduced from 221 to 9 mgL−1 during the electrocoagulation process. The treated effluent was then subjected to the photo electro-Fenton process, which involved the use of two iron electrodes and UV light. After optimizing the process, the electric current intensity was set at 0.02 A, the reaction time was 25.2 min, and the hydrogen peroxide content was 977 mgL−1. Under these conditions, the COD removal rate was found to be 85%. Moreover, in the PEF, in the reading of the effluent COD, the degree of interference of hydrogen peroxide was calculated. As a result, the final concentration of COD in the effluent was reduced to approximately 25 mgL−1, while the final concentration of TSS was less than 10 mgL−1. [ABSTRACT FROM AUTHOR] |
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