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Degradation of the emerging contaminant ibuprofen in water by photo-Fenton.
Water Res. 2010 Jan; 44(2):589-95.WR

Abstract

In this study the degradation of the worldwide Non-Steroidal Anti-Inflammatory Drug (NSAID) ibuprofen (IBP) by photo-Fenton reaction by use of solar artificial irradiation was carried out. Non-photocatalytic experiments (complex formation, photolysis and UV/Vis-H(2)O(2) oxidation) were executed to evaluate the isolated effects and additional differentiated degradation pathways of IBP. The solar photolysis cleavage of H(2)O(2) generates hydroxylated-IBP byproducts without mineralization. Fenton reaction, however promotes hydroxylation with a 10% contamination in form of a mineralization. In contrast photo-Fenton in addition promotes the decarboxylation of IBP and its total depletion is observed. In absence of H(2)O(2) a decrease of IBP was observed in the Fe(II)/UV-Vis process due to the complex formation between iron and the IBP-carboxylic moiety. The degradation pathway can be described as an interconnected and successive principal decarboxylation and hydroxylation steps. TOC depletion of 40% was observed in photo-Fenton degradation. The iron-IBP binding was the key-point of the decarboxylation pathway. Both decarboxylation and hydroxylation mechanisms, as individual or parallel process are responsible for IBP removal in Fenton and photo-Fenton systems. An increase in the biodegradability of the final effluent after photo-Fenton treatment was observed. Final BOD(5) of 25 mg L(-1) was reached in contrast to the initial BOD(5) shown by the untreated IBP solution (BOD(5)<1 mg L(-1)). The increase in the biodegradability of the photo-Fenton degradation byproducts opens the possibility for a complete remediation with a final post-biological treatment.

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Authors+Show Affiliations

Méndez-Arriaga F
Departamento de Ingeniería Química, Facultad de Química, Universidad de Barcelona, C/ Martí i Franquès 1, 08028 Barcelona, Spain. fmendeza@ub.edu
Esplugas S
No affiliation info available
Giménez J
No affiliation info available

MeSH

Anti-Inflammatory Agents, Non-SteroidalEnvironmental Restoration and RemediationFresh WaterHydrogen PeroxideIbuprofenIronWater Pollutants, Chemical

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19656545

Citation

Méndez-Arriaga, Fabiola, et al. "Degradation of the Emerging Contaminant Ibuprofen in Water By Photo-Fenton." Water Research, vol. 44, no. 2, 2010, pp. 589-95.
Méndez-Arriaga F, Esplugas S, Giménez J. Degradation of the emerging contaminant ibuprofen in water by photo-Fenton. Water Res. 2010;44(2):589-95.
Méndez-Arriaga, F., Esplugas, S., & Giménez, J. (2010). Degradation of the emerging contaminant ibuprofen in water by photo-Fenton. Water Research, 44(2), 589-95. https://doi.org/10.1016/j.watres.2009.07.009
Méndez-Arriaga F, Esplugas S, Giménez J. Degradation of the Emerging Contaminant Ibuprofen in Water By Photo-Fenton. Water Res. 2010;44(2):589-95. PubMed PMID: 19656545.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Degradation of the emerging contaminant ibuprofen in water by photo-Fenton. AU - Méndez-Arriaga,Fabiola, AU - Esplugas,Santiago, AU - Giménez,Jaime, Y1 - 2009/07/15/ PY - 2009/04/18/received PY - 2009/07/03/revised PY - 2009/07/08/accepted PY - 2009/8/7/entrez PY - 2009/8/7/pubmed PY - 2010/4/10/medline SP - 589 EP - 95 JF - Water research JO - Water Res VL - 44 IS - 2 N2 - In this study the degradation of the worldwide Non-Steroidal Anti-Inflammatory Drug (NSAID) ibuprofen (IBP) by photo-Fenton reaction by use of solar artificial irradiation was carried out. Non-photocatalytic experiments (complex formation, photolysis and UV/Vis-H(2)O(2) oxidation) were executed to evaluate the isolated effects and additional differentiated degradation pathways of IBP. The solar photolysis cleavage of H(2)O(2) generates hydroxylated-IBP byproducts without mineralization. Fenton reaction, however promotes hydroxylation with a 10% contamination in form of a mineralization. In contrast photo-Fenton in addition promotes the decarboxylation of IBP and its total depletion is observed. In absence of H(2)O(2) a decrease of IBP was observed in the Fe(II)/UV-Vis process due to the complex formation between iron and the IBP-carboxylic moiety. The degradation pathway can be described as an interconnected and successive principal decarboxylation and hydroxylation steps. TOC depletion of 40% was observed in photo-Fenton degradation. The iron-IBP binding was the key-point of the decarboxylation pathway. Both decarboxylation and hydroxylation mechanisms, as individual or parallel process are responsible for IBP removal in Fenton and photo-Fenton systems. An increase in the biodegradability of the final effluent after photo-Fenton treatment was observed. Final BOD(5) of 25 mg L(-1) was reached in contrast to the initial BOD(5) shown by the untreated IBP solution (BOD(5)<1 mg L(-1)). The increase in the biodegradability of the photo-Fenton degradation byproducts opens the possibility for a complete remediation with a final post-biological treatment. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/19656545/Degradation_of_the_emerging_contaminant_ibuprofen_in_water_by_photo_Fenton_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(09)00466-7 DB - PRIME DP - Unbound Medicine ER -