| Abstract |
| This study is to remove fulvic acid of natural organic matters(NOMs) that existed in water and polluted in the water system. Fulvic acids show a high reactivity towards chlorine and make trihalomethanes in water treatment. The optimum conditions for the removal of natural organic matters were investigated using photocatalytic oxidation, which is and advanced oxidation process. For the more effective photocatalytic reaction than the conventional photocatalytic reaction, Ag was added and the experiment was conducted. Response surface methodology (RSM) was used to find the appropriate amount of Ag injection. Fulvic acid was selected as Natural Organic Matter(NOM). TiO2 was fixed to the reactor at 300 g/L and a UV lamp with a wavelength of 254 + 185 nm was used in the experiment. Experiments were conducted under the conditions of Ag of 0.15 - 5.8 g / L, reaction time of 10 - 70 min, and irradiation density of 9.5 - 13.7 W / L. Experimental results showed that the optimum removal rate was Ag 3.5 g/L, irradiation density 13 W/L and reaction time 50 min. |
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| Key Words |
| Fulvic acid, Photocatalytic, UV254, TOC, Response Surface Methodology |
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