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Degradation of sulfamethoxazole in water by solar photo-Fenton. Chemical and toxicological evaluation.
Water Res. 2009 Sep; 43(16):3922-31.WR

Abstract

In this work, the photocatalytic degradation of the antibiotic sulfamethoxazole (SMX) by solar photo-Fenton at pilot plant scale was evaluated in distilled water (DW) and in seawater (SW). Degradation and mineralization of SMX were strongly hindered in SW compared to DW. The influence of H(2)O(2) and iron concentration on the efficiency of the photocatalytic process was evaluated. An increase in iron concentration from 2.6 to 10.4 mg L(-1) showed only a slight improvement in SMX degradation and mineralization. However, an increase in H(2)O(2) concentration up to 120 mg L(-1) during photo-Fenton in DW decreased SMX solution toxicity from 85% to 20%, according to results of Daphnia magna bioassays. The same behaviour was not observed after photo-Fenton treatment in SW. Despite 45% mineralization in SW, toxicity increased from 16% to 86% as shown by Vibrio fischeri bioassays, which suggests that the intermediates generated in SW are different from those in DW. A SMX degradation pathway during the photo-Fenton treatment in DW is proposed.

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Authors+Show Affiliations

Trovó AG
Department of Analytical Chemistry, UNESP-São Paulo State University, Institute of Chemistry of Araraquara, CP 355, 14801-970 Araraquara, SP, Brazil.
Nogueira RF
No affiliation info available
Agüera A
No affiliation info available
Fernandez-Alba AR
No affiliation info available
Sirtori C
No affiliation info available
Malato S
No affiliation info available

MeSH

Anti-Bacterial AgentsHydrogen PeroxideHydrolysisIronKineticsPhotolysisSulfamethoxazoleToxicity TestsWaste Disposal, FluidWaterWater Pollutants, Chemical

Pub Type(s)

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

Language

eng

PubMed ID

19443009

Citation

Trovó, Alam G., et al. "Degradation of Sulfamethoxazole in Water By Solar photo-Fenton. Chemical and Toxicological Evaluation." Water Research, vol. 43, no. 16, 2009, pp. 3922-31.
Trovó AG, Nogueira RF, Agüera A, et al. Degradation of sulfamethoxazole in water by solar photo-Fenton. Chemical and toxicological evaluation. Water Res. 2009;43(16):3922-31.
Trovó, A. G., Nogueira, R. F., Agüera, A., Fernandez-Alba, A. R., Sirtori, C., & Malato, S. (2009). Degradation of sulfamethoxazole in water by solar photo-Fenton. Chemical and toxicological evaluation. Water Research, 43(16), 3922-31. https://doi.org/10.1016/j.watres.2009.04.006
Trovó AG, et al. Degradation of Sulfamethoxazole in Water By Solar photo-Fenton. Chemical and Toxicological Evaluation. Water Res. 2009;43(16):3922-31. PubMed PMID: 19443009.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Degradation of sulfamethoxazole in water by solar photo-Fenton. Chemical and toxicological evaluation. AU - Trovó,Alam G, AU - Nogueira,Raquel F P, AU - Agüera,Ana, AU - Fernandez-Alba,Amadeo R, AU - Sirtori,Carla, AU - Malato,Sixto, Y1 - 2009/04/17/ PY - 2008/11/23/received PY - 2009/04/07/revised PY - 2009/04/09/accepted PY - 2009/5/16/entrez PY - 2009/5/16/pubmed PY - 2009/10/7/medline SP - 3922 EP - 31 JF - Water research JO - Water Res VL - 43 IS - 16 N2 - In this work, the photocatalytic degradation of the antibiotic sulfamethoxazole (SMX) by solar photo-Fenton at pilot plant scale was evaluated in distilled water (DW) and in seawater (SW). Degradation and mineralization of SMX were strongly hindered in SW compared to DW. The influence of H(2)O(2) and iron concentration on the efficiency of the photocatalytic process was evaluated. An increase in iron concentration from 2.6 to 10.4 mg L(-1) showed only a slight improvement in SMX degradation and mineralization. However, an increase in H(2)O(2) concentration up to 120 mg L(-1) during photo-Fenton in DW decreased SMX solution toxicity from 85% to 20%, according to results of Daphnia magna bioassays. The same behaviour was not observed after photo-Fenton treatment in SW. Despite 45% mineralization in SW, toxicity increased from 16% to 86% as shown by Vibrio fischeri bioassays, which suggests that the intermediates generated in SW are different from those in DW. A SMX degradation pathway during the photo-Fenton treatment in DW is proposed. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/19443009/Degradation_of_sulfamethoxazole_in_water_by_solar_photo_Fenton__Chemical_and_toxicological_evaluation_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(09)00238-3 DB - PRIME DP - Unbound Medicine ER -