Journal of Advances in Environmental Health Research

Journal of Advances in Environmental Health Research

Photocatalytic degradation of phenol in water solutions using zno nanoparticles immobilized on glass

Document Type : Original Article

Authors
Sedigheh Saeedi 1
Hatam Godini 2
Mohammad Almasian 3
Ghodratollah Shams-Khorramabadi 1
Bahram Kamarehie 1
Parvin Mostafaie 1
Fatemeh Taheri 1
1 Department of Environmental Health Engineering, School of Health, Lorestan University of Medical Sciences, Khorramabad, Iran
2 Department of Environmental Health Engineering, School of Health, Alborz University of Medical Sciences, Karaj, Iran
3 Department of English Language, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
10.22102/jaehr.2015.40204
Abstract
Phenol and its derivatives are pollutant compounds that are present in the wastewater of many industries. The objective of this study was to investigate the photocatalytic degradation of phenol in water containing various concentrations of sodium chloride. A laboratory study was conducted to evaluate the performance of UV/ZnO process on the efficiency of phenol removal from saline water with ZnO nanoparticles fixed on glass using UVC radiation. The effects of pH, contact time, sodium chloride concentrations, and the initial concentration of phenol on the photocatalytic removal of phenol were studied. The photocatalytic degradation of phenol showed suitable efficiency under the absence of sodium chloride (100% phenol removal at a concentration of 5 mg/l and during 120 minutes). However, the removal efficiency decreased in the presence of a concentration of 30 g/l of sodium chloride (92.4%). Additionally, phenol photocatalytic degradation efficiency decreased as a result of an increase in the initial concentration of phenol and the efficiency increased as a result of a decrease in pH (pH = 3). The results obtained from this study indicated that ZnO nanoparticles or ultraviolet rays alone cannot remove phenol fully and have a much lower efficiency in comparison with the photocatalytic degradation of phenol. Thus, the photocatalytic degradation process (UV/ZnO) is an effective method of removing phenol from saline water solutions. 
Keywords
Degradation
Phenol
Water Pollution
Nanoparticles
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Journal of Advances in Environmental Health Research
Volume 3, Issue 3 - Serial Number 3
13
Summer 2015
Pages 204-213