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Study for Removal of Phenols from Synthetic Wastewater using Solar Photo Catalytic Reactor

Study for Removal of Phenols from Synthetic Wastewater using Solar Photo Catalytic Reactor

 present study was devoted to investigate the removal of phenol, which has been selected as a model for the toxic organic compounds from synthetic wastewater, by using a compound parabolic collector (CPC)photocatalysis system. The solar photo-catalytic system performance was tested in terms of the phenol degradation (%Rphenol) and TOC mineralization efficiency (%MTOC) by using FeSO4 as a catalyst and Oxalic acid as solar photo assisted agent to enhance the process efficiency. Different operating conditions were studied to investigate the performance of the photocatalysis system, such as initial phenol concentration, initial H2O2 concentration,FeSO4/Oxalic weigh ratio, pH of solution, and solution flow rate. The operating variables were optimized to obtain a maximum efficiency for the system performance. A quadratic-second degree polynomial equation was developed for (%Rphenol) and (%MTOC), relating them, in good agreement with the studied operating conditions. The influence of operating variables on the reaction pathways was investigated by estimating the corresponding rate constants. It was found that the radical reaction pathway, which produce the intermediate compoundsdecreased as pH increased more than pH=4. The radical reaction pathway was found to reach maximum value at H2O2 loading of 30 ppm. The effect of phenol concentration has a negative impact on the radical reaction pathway so does the weight ratio of FeSO4/Oxalate.


Source: Uot Media

Date :13/10/2015