Application of Photo-Fenton as a Tertiary Treatment of Emerging Contaminants in Municipal Wastewater.

Klamerth, N. and Malato, S. and Maldonado, M.I. and Agüera, A. and Fernández-Alba, A.R. (2010) Application of Photo-Fenton as a Tertiary Treatment of Emerging Contaminants in Municipal Wastewater. Environmental Science & Technology, 44 (5). pp. 1792-1798. ISSN 0013-936X

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Official URL: http://dx.doi.org/10.1021/es903455p

Abstract

This work focuses on the treatment of real effluents from a municipal wastewater treatment plant (RE) with solar photo-Fenton (5 mg and 20 mg L−1 Fe, pH 3 and 50 mg L−1 initial H2O2 concentration) at pilot plant scale. In some experiments RE was spiked with 15 different (acetaminophen, antipyrine, atrazine, caffeine, carbamazepine, diclofenac, flumequine, hydroxybiphenyl, ibuprofen, isoproturon, ketorolac, ofloxacin, progesterone, sulfamethoxazole, and triclosan) emerging contaminants (ECs) at 100 and 5 μg L−1 each which were added directly into RE prior to treatment. All experiments showed successful degradation of ECs in real effluents from different municipal wastewater treatment plants at low iron concentration (5 mg L−1). Although the most degradation took place during the Fenton process, photo-Fenton was necessary to degrade all ECs below their limit of detection (LOD). In the case of the RE containing 52 ECs (determined by HPLC-QTRAP-MS), four of them could not be degraded to their LOD and were still present, although at extremely low concentrations (nicotine 47 ng L−1, cotinine 11 ng L−1, chlorfenvinphos 99 ng L−1, and caffeine 8 ng L−1). ECs were easily degraded by •OH without substantial competition with the organic content of the RE.

Item Type: Article
Subjects: T Technology > TD Environmental technology. Sanitary engineering
T Technology > TP Chemical technology
Depositing User: José Ángel Gómez Martín
Date Deposited: 15 May 2013 08:43
Last Modified: 10 Apr 2014 08:52
URI: http://eprints.imdea-agua.org:13000/id/eprint/156

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