The presence of polycyclic aromatic hydrocarbons, such as anthracene (AN) and benzo[a]pyrene (BaP), in water has become a problem of great concern due to the detrimental health effects caused to humans and living beings. In this work, the efficiency of the UV/H O system for degrading the target compounds at ultra-trace levels in surface water has been evaluated. For this 2 2 purpose, a previous optimization step using a face-centered central composite experimental design has been conducted, consid- ering the effect of the UV-C irradiance and the initial concentration of H O . It was evidenced that under optimal operating 2 2 −1 −2 conditions (11 mg L H O and 0.63 mW cm irradiance), AN and BaP removal percentages were higher than 99.8%. 2 2 Additionally, 69.3% of the organic matter, in terms of total organic carbon, was mineralized without the production of transfor- mation by-products more harmful than the parent compounds. These findings demonstrate the oxidation capacity of the exam- ined system in a natural matrix for degrading micropollutants that cannot be converted through conventional treatment processes. Consequently, new horizons are opened for the effective use of the UV/H O system for drinking water production, providing the
Environmental Science and Pollution Research – Springer Journals
Published: Jun 5, 2018
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