Development of Solar Photo-Fenton Process for the Removal of Color, COD, and Turbidity from Institutional Wastewater

Abstract

In recent years, hard research has been aimed to develop effective technology for the treatment of wastewater and industrial effluent containing organic/inorganic contaminants. Amongst several technologies, the advanced oxidation processes (AOPs) recently have played a major role in the treatment of wastewater. In this study, the treatment of institutional wastewater by solar-photo-Fenton (UV/Fe 2+ /H 2 O 2 ) process based on AOPs was examined in terms of % color, % turbidity, and % COD removal. The solar-UV/Fe 2+ /H 2 O 2 process has revealed a higher removal of color (91%), turbidity (90%), and COD (86%) than the other processes. The effect of various experimental parameters such as hydrogen peroxide (H 2 O 2 ) concentration (0.25 to 1.25 g/L) and Ferrous ion (Fe 2+ ) concentration (0.005 to 0.12 g/L), initial pH (2 to 10), reaction time (30 to 180 min) on the color, turbidity and COD removal has been studied to find out the optimum conditions leading to maximum removal efficiency of the solar UV/Fe 2+ /H 2 O 2 process. The best results of the solar UV/Fe 2+ /H 2 O 2 process of institutional wastewater treatment have been found using 0.75 g/L of H 2 O 2 , 0.045 g/L of Fe 2+ , pH of 4, after 120 min of reaction time. The present study revealed that the solar-UV/Fe 2+ /H 2 O 2 process in an AOPs was well efficient in the institutional wastewater treatment, accomplishing a higher pollutant removal rate. The solar-UV/Fe 2+ /H 2 O 2 process is an effective treatment technique for the removal of pollutants from institutional wastewater.

Challenges and Emerging Trends in Advanced Oxidation Technologies and Integration of Advanced Oxidation Processes with Biological Processes for Wastewater Treatment

“…It was found that a high removal efficiency was achieved, reaching 89% and 96%, respectively, in just 8 min. Arka et al (2021) [39] investigated the solar photo-Fenton method for the treatment of institutional wastewater. According to the study, the solar UV/Fe 2+ /H 2 O 2 process was very efficient in treating the wastewater from institutions, achieving a greater pollutant removal rate.…”

Optimal concentration and efficiency of the photo fenton system for the treatment of a synthetic textile effluent

“…The advanced Oxidation Processes (AOPs) could be quite effective for the degradation of persistent contaminants. Their efficiency is based on the generation of highly reactive OHradicals, which are capable of oxidizing many organic compounds (Arka et al, 2022). OHradicals are generated by the intervention of sunlight or other energy sources and are characterized by their great effectiveness in oxidizing organic matter (Litter, 2005) The versatility of AOPs lies in the different existing ways of producing free radicals, such as heterogeneous photocatalytic ozonation, anodic oxidation, ultraviolet/hydrogen peroxide (UV/H2O2), Fenton and Photo-Fenton, among others (Cruz-Gonzalez et al, 2017).…”