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Journal of Environmental and Public Health
Volume 2009 (2009), Article ID 149034, 6 pages
http://dx.doi.org/10.1155/2009/149034
Research Article

Preliminary Feasibility Study of Benzo(a)Pyrene Oxidative Degradation by Fenton Treatment

LEPÆ, Departamento de Engenharia Química, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal

Received 16 May 2009; Accepted 20 July 2009

Academic Editor: Ivo Iavicoli

Copyright © 2009 Vera Homem et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Polycyclic aromatic hydrocarbons (PAHs) are considered priority compounds due to their toxic and carcinogenic nature. The concern about water contamination and the consequent human exposure has encouraged the development of new methods for PAHs removal. The purpose of this work was to study the feasibility of a degradation process of benzo(a)pyrene (BaP) in aqueous matrices by oxidation with Fenton reagent. A laboratory unit was designed to optimize the factors which may influence the process: pH (3.5 to 6.0), temperature (30 to ), (20 to 150 mg ), concentration (2.75 to 5.50 mg ), and the initial concentration of the pollutant (10 to 100  g ). The pH did not influence significantly the results in the range studied. An increase in temperature from 30 to improved the removal efficiency from 90% to 100%. The same effect was observed for ferrous ion concentrations from 2.75 to 5.50 mg (increase from 78% to 100% removal). The concentration played a double role during the process: from 20 to 50 mg an increase in the removal efficiency was achieved, but for higher concentrations ( 50 mg ) the degradation is lower. This study proved that the degradation of benzo(a)pyrene by Fenton's reagent is a viable process.