Evaluation of the UV/H2O2 system for treating natural water with a mixture of anthracene and benzo[a]pyrene at ultra-trace levels

Evaluation of the UV/H2O2 system for treating natural water with a mixture of anthracene and... 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 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Environmental Science and Pollution Research Springer Journals

Evaluation of the UV/H2O2 system for treating natural water with a mixture of anthracene and benzo[a]pyrene at ultra-trace levels

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Publisher
Springer Journals
Copyright
Copyright © 2018 by Springer-Verlag GmbH Germany, part of Springer Nature
Subject
Environment; Environment, general; Environmental Chemistry; Ecotoxicology; Environmental Health; Atmospheric Protection/Air Quality Control/Air Pollution; Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution
ISSN
0944-1344
eISSN
1614-7499
D.O.I.
10.1007/s11356-018-2411-6
Publisher site
See Article on Publisher Site

Abstract

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

Journal

Environmental Science and Pollution ResearchSpringer Journals

Published: Jun 5, 2018

References

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