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



Khorsandi H1 ; Bina B2 ; Khorsandi J3
Authors
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Authors Affiliations
  1. 1. Environmental Health Engineering Department, Urmia University of Medical Sciences, Urmia, Iran
  2. 2. Environmental Health Engineering Department, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Azarbaijan Shahid Madani University, Tabriz, Iran

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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