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Evaluation of Uv/Tio2photo-Catalytic Process for Removing Humic Compounds From Water



Khorsandi H1 ; Bina B2 ; Khorsandi J3
Authors

Source: Polish Journal of Environmental Studies Published:2015

Abstract

Humic compounds are among the most important natural organic matters (NOM) existing in water resources, and are known as one of the main disinfection by-product (DBP) precursors-particularly tri- halomethanes (THMs) and haloacetic acids (HAAs)-which may act as health risk factors. The study objective is to investigate the UV/Ti02photo-catalytic process in removing humic substances from water. It was conducted in a lab-scale batch photo-catalytic reactor using the experimental method. It may be concluded that the UV/Ti02process can provide desirable drinking water quality in terms of humic substances, so this process was capable of decreasing 5 mg/L dissolved organic carbon to 0.394 mg/L in optimum conditions. The specific UV254absorbance of 2.79 L/mg.m was attained by photo-catalytic first-order reaction having rate constant of 0.267 min-1after 90 minutes. © 2015, Pol. J. Environ. Stud. All rights reserved.
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