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Removal of sunscreen compounds from swimming pool water using self-organized TiO2 nanotubular array electrodes

Paper ID Volume ID Publish Year Pages File Format Full-Text
26915 43986 2010 7 PDF Available
Title
Removal of sunscreen compounds from swimming pool water using self-organized TiO2 nanotubular array electrodes
Abstract

An alternative method to remove sunscreen compounds 4-methylbenzylidene camphor (4-MBC), 3-benzophenone (BENZO) and 4-aminobenzoic acid (PABA) from swimming pool water is proposed based on photoeletrocatalytic oxidation using self-organized TiO2 nanotubular array electrodes irradiated by UV light. The best condition for the mineralization of these compounds was found to be 0.1 mol L−1 Na2SO4 at pH 9 with +1.5 V potential applied to the electrode. This leads to 100% removal of the 4-MBC, BENZO and PABA compounds in tap water, monitored by spectrophotometric and HPLC measurements and a maximum of 98.7%, 90.8% and 88.4% TOC reduction after a 3-h period of treatment. The method was successfully applied to sunscreen degradation in swimming pool water, reaching 100% degradation and 89.5–98.7% TOC reduction, indicating that the method could be an excellent alternative method to produce truly clean water.

Keywords
Sunscreens degradation; Photoelectrocatalytic process; TiO2 nanotubular arrays; 4-Methylbenzylidene camphor; 3-Benzophenone; 3,4-Aminobenzoic acid
First Page Preview
Removal of sunscreen compounds from swimming pool water using self-organized TiO2 nanotubular array electrodes
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 214, Issues 2–3, 15 August 2010, Pages 257–263
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering