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Combined advanced oxidation processes for the synergistic degradation of ibuprofen in aqueous environments.
J Hazard Mater. 2010 Jun 15; 178(1-3):202-8.JH

Abstract

Ibuprofen (IBP) is a widely used analgesic and anti-inflammatory drug and has been found as a pollutant in aqueous environments. The sonolytic, photocatalytic and sonophotocatalytic degradations of IBP in the presence of homogeneous (Fe(3+)) and heterogeneous photocatalysts (TiO(2)) were studied. When compared with sonolysis and photocatalysis, a higher degradation rate was observed for sonophotocatalysis in the presence of TiO(2) or Fe(3+) and also a slight synergistic enhancement was found with a synergy index of 1.3 and 1.6, respectively. Even though TiO(2) sonophotocatalysis showed an additive process effect in the mineralization, a significant synergy effect was observed for the sonophotocatalysis in the presence of Fe(3+). This might be due to the formation of photoactive complexes between Fe(3+) and IBP degradation products, such as carboxylic acids. High performance liquid chromatography (HPLC) and electrospray ionisation mass spectrometry (ESMS) techniques were employed for the identification of the degradation intermediates. The sonication of IBP led to the formation of its mono- and di-hydroxylated intermediates. Apart from the hydroxylated intermediates, products formed due to the oxidation of propanoic acid and isobutyl substituents of IBP were also observed.

Authors+Show Affiliations

Particulate Fluids Processing Centre, School of Chemistry, University of Melbourne, Grattan Street, Melbourne, 3010 VIC, Australia.No affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

20149534

Citation

Madhavan, Jagannathan, et al. "Combined Advanced Oxidation Processes for the Synergistic Degradation of Ibuprofen in Aqueous Environments." Journal of Hazardous Materials, vol. 178, no. 1-3, 2010, pp. 202-8.
Madhavan J, Grieser F, Ashokkumar M. Combined advanced oxidation processes for the synergistic degradation of ibuprofen in aqueous environments. J Hazard Mater. 2010;178(1-3):202-8.
Madhavan, J., Grieser, F., & Ashokkumar, M. (2010). Combined advanced oxidation processes for the synergistic degradation of ibuprofen in aqueous environments. Journal of Hazardous Materials, 178(1-3), 202-8. https://doi.org/10.1016/j.jhazmat.2010.01.064
Madhavan J, Grieser F, Ashokkumar M. Combined Advanced Oxidation Processes for the Synergistic Degradation of Ibuprofen in Aqueous Environments. J Hazard Mater. 2010 Jun 15;178(1-3):202-8. PubMed PMID: 20149534.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Combined advanced oxidation processes for the synergistic degradation of ibuprofen in aqueous environments. AU - Madhavan,Jagannathan, AU - Grieser,Franz, AU - Ashokkumar,Muthupandian, Y1 - 2010/01/22/ PY - 2009/12/14/received PY - 2010/01/11/revised PY - 2010/01/12/accepted PY - 2010/2/13/entrez PY - 2010/2/13/pubmed PY - 2010/7/14/medline SP - 202 EP - 8 JF - Journal of hazardous materials JO - J Hazard Mater VL - 178 IS - 1-3 N2 - Ibuprofen (IBP) is a widely used analgesic and anti-inflammatory drug and has been found as a pollutant in aqueous environments. The sonolytic, photocatalytic and sonophotocatalytic degradations of IBP in the presence of homogeneous (Fe(3+)) and heterogeneous photocatalysts (TiO(2)) were studied. When compared with sonolysis and photocatalysis, a higher degradation rate was observed for sonophotocatalysis in the presence of TiO(2) or Fe(3+) and also a slight synergistic enhancement was found with a synergy index of 1.3 and 1.6, respectively. Even though TiO(2) sonophotocatalysis showed an additive process effect in the mineralization, a significant synergy effect was observed for the sonophotocatalysis in the presence of Fe(3+). This might be due to the formation of photoactive complexes between Fe(3+) and IBP degradation products, such as carboxylic acids. High performance liquid chromatography (HPLC) and electrospray ionisation mass spectrometry (ESMS) techniques were employed for the identification of the degradation intermediates. The sonication of IBP led to the formation of its mono- and di-hydroxylated intermediates. Apart from the hydroxylated intermediates, products formed due to the oxidation of propanoic acid and isobutyl substituents of IBP were also observed. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/20149534/Combined_advanced_oxidation_processes_for_the_synergistic_degradation_of_ibuprofen_in_aqueous_environments_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(10)00097-X DB - PRIME DP - Unbound Medicine ER -