ENHANCING THE REMEDIATION EFFICIENCY OF PHOTO-FENTON REACTION BY THE OXYGEN AND HUMIC SUBSTANCES

摘要

Removal of organic pollutants from water by Fenton reaction is most effective at pH 2.8. Thus, the necessity to acidify the reaction medium limits the applicability of this process. Consequently, the effect of oxygen and humic substances [Humic acid (HA), Suwannee River humic acid (SRHA) and Suwannee River fulvic acid (SRFA)] on the photo-Fenton (Fe~(2+)/H_2O_2/UV-Vis) treatment of diuron-contaminated water at pH 2.8 and 5.0 was studied to enhance the efficiency of this process and extend its optimum pH range towards neutral conditions.