alexa The Effects of Photocatalyst and Solution Co-Contaminants on Photocatalytic Oxidation of 1,3- Dinitrobenzene in Aqueous Semiconductor Oxide Suspensions
ISSN: 2157-7048

Journal of Chemical Engineering & Process Technology
Open Access

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Research Article

The Effects of Photocatalyst and Solution Co-Contaminants on Photocatalytic Oxidation of 1,3- Dinitrobenzene in Aqueous Semiconductor Oxide Suspensions

Dorothy W Skaf1*, Amanda Grannas2, Daniel Colotti1 and Eric Bowes1
1Department of Chemical Engineering, Villanova University, Villanova, PA 19085, USA
2Department of Chemistry, Villanova University, Villanova, PA 19085, USA
Corresponding Author : Dorothy W Skaf
Department of Chemical Engineering
Villanova University, Villanova, PA 19085, USA
Tel: 16105194952
E-mail: [email protected]
Received January 19, 2016; Accepted February 17, 2016; Published February 25, 2016
Citation: Skaf DW, Grannas A, Colotti D, Bowes E (2016) The Effects of Photocatalyst and Solution Co-Contaminants on Photocatalytic Oxidation of 1,3-Dinitrobenzene in Aqueous Semiconductor Oxide Suspensions. J Chem Eng Process Technol 7:275. doi:10.4172/2157-7048.1000275
Copyright: © 2016 Skaf DW, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
 

Abstract

Heterogeneous photocatalysis of 1,3-dinitrobenzene (DNB) using simulated solar irradiation in the presence of semiconductor oxides was studied. Comparison of TiO2 and ZnO showed that the former was a more efficient photocatalyst for the degradation of DNB. The addition of potential environmental co-contaminants such as acetic acid, fulvic acid and seawater salts to the DNB solutions all inhibited the DNB degradation rate. The addition of hydroxyl radical-generating compounds, including H2O2 and NaNO3, to the DNB solutions both slightly reduced the DNB degradation rate, indicating that hydroxyl radical generation is not a rate limiting step in the overall reaction process. The use of 5 volume % acetone cosolvent slowed the degradation rate, however for 15 volume % acetone despite the slower relative rate of destruction, the higher concentrations of DNB provided higher mass destruction rates.

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