Articles | Volume 9, issue 2
Drink. Water Eng. Sci., 9, 27–35, 2016
Drink. Water Eng. Sci., 9, 27–35, 2016

Research article 16 Sep 2016

Research article | 16 Sep 2016

Optimized photodegradation of Bisphenol A in water using ZnO, TiO2 and SnO2 photocatalysts under UV radiation as a decontamination procedure

Rudy Abo, Nicolai-Alexeji Kummer, and Broder J. Merkel Rudy Abo et al.
  • Department of Geology, TU Bergakademie Freiberg, Freiberg, 09599, Germany

Abstract. Experiments on photodegradation of Bisphenol A (BPA) were carried out in water samples by means photocatalytic and photo-oxidation methods in the presence of ZnO, TiO2 and SnO2 catalysts. The objective of this study was to develop an improved technique that can be used as a remediation procedure for a BPA-contaminated surface water and groundwater based on the UV solar radiation. The photodegradation of BPA in water performed under a low-intensity UV source mimics the UVC and UVA spectrum of solar radiation between 254 and 365 nm. The archived results reveal higher degradation rates observed in the presence of ZnO than with TiO2 and SnO2 catalysts during 20 h of irradiation. The intervention of the advanced photocatalytic oxidation (PCO) reduces the time of degradation to less than 1 h to reach a degradation rate of 90 % for BPA in water. The study proposes the use of ZnO as a competitor catalyst to the traditional TiO2, providing the most effective treatment of contaminated water with phenolic products.

Short summary
Contamination of water resources is continuously compounded as a result of rapid industrial development, particularly in heavily populated urban areas. This work proposes a water treatment method from endocrine disrupting resin Bisphenol A by means of photodegradation and oxidation techniques. The methodology was developed after many lab experiments, and we believe that our results will support future research on water purification techniques from organic contamination products.