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A comparative study of ultrasonic cavitation and Fenton's reagent for bisphenol A degradation in deionised and natural waters.
J Hazard Mater. 2007 Jul 31; 146(3):546-51.JH

Abstract

Bisphenol A (BPA), a xenobiotic that exhibits endocrine disrupting action can be found in surface water. Its complete elimination can be obtained by advanced oxidation processes, notably upon the application of ultrasonic waves. In order to evaluate the feature of ultrasound relevance and the involvement of the hydroxyl radical in the BPA sonochemical degradation, ultrasound action was compared to Fenton's reaction in the cases of deionised acidic water (pH 3) and natural water (pH 7.6, main ions concentration: Ca(2+)=486mgL(-1), Na(+)=9.1mgL(-1), Cl(-)=10mg L(-1), SO(4)(2-)=1187mgL(-1), HCO(3)(-)=402mgL(-1)). Ultrasound was performed at 300kHz and 80W. Fenton's process was operated using ferrous sulphate (100micromolL(-1)) and continuous H(2)O(2) addition at the rate as it is produced when sonication is applied in water in absence of substrate. Experiments carried out in deionised water show that both processes exhibit identical BPA elimination rate and identical primary intermediates. Main chemical pathways involve reactions with OH radical. Chemical oxygen demand (COD) and total organic carbon (TOC) analyses show that the Fenton's process is slightly more efficient than ultrasonic treatment for the removal of BPA by-products in the case of deionised water. Experiments conducted in natural water evidenced the inhibition of the Fenton process while the ultrasound action was not hampered.

Authors+Show Affiliations

Grupo de Electroquímica, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia, A.A. 1226, Medellín, Colombia.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

17532122

Citation

Torres, R A., et al. "A Comparative Study of Ultrasonic Cavitation and Fenton's Reagent for Bisphenol a Degradation in Deionised and Natural Waters." Journal of Hazardous Materials, vol. 146, no. 3, 2007, pp. 546-51.
Torres RA, Abdelmalek F, Combet E, et al. A comparative study of ultrasonic cavitation and Fenton's reagent for bisphenol A degradation in deionised and natural waters. J Hazard Mater. 2007;146(3):546-51.
Torres, R. A., Abdelmalek, F., Combet, E., Pétrier, C., & Pulgarin, C. (2007). A comparative study of ultrasonic cavitation and Fenton's reagent for bisphenol A degradation in deionised and natural waters. Journal of Hazardous Materials, 146(3), 546-51.
Torres RA, et al. A Comparative Study of Ultrasonic Cavitation and Fenton's Reagent for Bisphenol a Degradation in Deionised and Natural Waters. J Hazard Mater. 2007 Jul 31;146(3):546-51. PubMed PMID: 17532122.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A comparative study of ultrasonic cavitation and Fenton's reagent for bisphenol A degradation in deionised and natural waters. AU - Torres,R A, AU - Abdelmalek,F, AU - Combet,E, AU - Pétrier,C, AU - Pulgarin,C, Y1 - 2007/04/20/ PY - 2007/5/29/pubmed PY - 2007/9/28/medline PY - 2007/5/29/entrez SP - 546 EP - 51 JF - Journal of hazardous materials JO - J Hazard Mater VL - 146 IS - 3 N2 - Bisphenol A (BPA), a xenobiotic that exhibits endocrine disrupting action can be found in surface water. Its complete elimination can be obtained by advanced oxidation processes, notably upon the application of ultrasonic waves. In order to evaluate the feature of ultrasound relevance and the involvement of the hydroxyl radical in the BPA sonochemical degradation, ultrasound action was compared to Fenton's reaction in the cases of deionised acidic water (pH 3) and natural water (pH 7.6, main ions concentration: Ca(2+)=486mgL(-1), Na(+)=9.1mgL(-1), Cl(-)=10mg L(-1), SO(4)(2-)=1187mgL(-1), HCO(3)(-)=402mgL(-1)). Ultrasound was performed at 300kHz and 80W. Fenton's process was operated using ferrous sulphate (100micromolL(-1)) and continuous H(2)O(2) addition at the rate as it is produced when sonication is applied in water in absence of substrate. Experiments carried out in deionised water show that both processes exhibit identical BPA elimination rate and identical primary intermediates. Main chemical pathways involve reactions with OH radical. Chemical oxygen demand (COD) and total organic carbon (TOC) analyses show that the Fenton's process is slightly more efficient than ultrasonic treatment for the removal of BPA by-products in the case of deionised water. Experiments conducted in natural water evidenced the inhibition of the Fenton process while the ultrasound action was not hampered. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/17532122/A_comparative_study_of_ultrasonic_cavitation_and_Fenton's_reagent_for_bisphenol_A_degradation_in_deionised_and_natural_waters_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(07)00542-0 DB - PRIME DP - Unbound Medicine ER -