- P-ISSN 1225-0163
- E-ISSN 2288-8985
The efficiency of Photocatalytic Oxidation Process were investigated for the treatment of Aquatic Humic Substances (AHS). In UV-only system, pH 7-9 was the optimum pH range for TOC removal, and alkali range was the optimum pH for absorbance decrease. In UV/<TEX>$TiO_2$</TEX> system, the optimum <TEX>$TiO_2$</TEX> dosage was 50ppm and over 50ppm of <TEX>$TiO_2$</TEX> dosage was not effective for removal of AHS. In UV/<TEX>$H_2O_2$</TEX> system, optimum <TEX>$H_2O_2$</TEX> dosage was 20mM, when over 20mM dosage, removal of TOC (Total Organic Carbon) and absorbance was decreased. Radical scavenger affected on the photo-oxidation of AHS. Removal rate of TOC and absorbance was decreased by addition of carbonate ions and TOC removal was more effected than that of absorbance.