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Homogeneous oxidation of aqueous solutions of atrazine and fenitrothion through dark and photo-Fenton reactions.
Chemosphere. 2009 Feb; 74(6):866-72.C

Abstract

The homogeneous catalytic oxidation of atrazine and fenitrothion in single compound-containing solutions and in mixture, in pure water, was investigated in dark and light-driven oxidation systems using H(2)O(2) as the oxidant and Fe(II) as the catalyst. It was shown that the degradation during the dark Fenton reactions takes place during the first 2h and further prolongation of the reaction time does not lead to enhanced removals. The same holds true for the light-driven reactions. With the photo-Fenton reaction, fenitrothion was completely mineralized while the TOC contained in the atrazine solution was removed by 57%. Both compounds in their parent form were completely eliminated from the first 5 min of the oxidation both when being in the single-containing solutions and in their binary mixture. The oxidation of the TOC in the atrazine solution follows a two-stage second-order kinetic behavior which is attributed to the complex reaction pathways occurring during the oxidation while that of the TOC in the fenitrothion solutions follows a pseudo-first order degradation kinetic and that of binary mixture a two-stage degradation kinetics. The results obtained in this study, clearly indicate that the light-driven Fenton oxidation can be very efficient for the removal of atrazine and especially fenitrothion from polluted waters.

Authors+Show Affiliations

University of Cyprus, Department of Civil and Environmental Engineering, GAIA-Laboratory of Environmental Engineering, 75, Kallipoleos, P.O. Box 20537, Nicosia 1678, Cyprus. dfatta@ucy.ac.cyNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

19027929

Citation

Kassinos, D, et al. "Homogeneous Oxidation of Aqueous Solutions of Atrazine and Fenitrothion Through Dark and photo-Fenton Reactions." Chemosphere, vol. 74, no. 6, 2009, pp. 866-72.
Kassinos D, Varnava N, Michael C, et al. Homogeneous oxidation of aqueous solutions of atrazine and fenitrothion through dark and photo-Fenton reactions. Chemosphere. 2009;74(6):866-72.
Kassinos, D., Varnava, N., Michael, C., & Piera, P. (2009). Homogeneous oxidation of aqueous solutions of atrazine and fenitrothion through dark and photo-Fenton reactions. Chemosphere, 74(6), 866-72. https://doi.org/10.1016/j.chemosphere.2008.10.008
Kassinos D, et al. Homogeneous Oxidation of Aqueous Solutions of Atrazine and Fenitrothion Through Dark and photo-Fenton Reactions. Chemosphere. 2009;74(6):866-72. PubMed PMID: 19027929.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Homogeneous oxidation of aqueous solutions of atrazine and fenitrothion through dark and photo-Fenton reactions. AU - Kassinos,D, AU - Varnava,N, AU - Michael,C, AU - Piera,P, Y1 - 2008/11/22/ PY - 2008/08/12/received PY - 2008/10/13/revised PY - 2008/10/14/accepted PY - 2008/11/26/pubmed PY - 2009/3/27/medline PY - 2008/11/26/entrez SP - 866 EP - 72 JF - Chemosphere JO - Chemosphere VL - 74 IS - 6 N2 - The homogeneous catalytic oxidation of atrazine and fenitrothion in single compound-containing solutions and in mixture, in pure water, was investigated in dark and light-driven oxidation systems using H(2)O(2) as the oxidant and Fe(II) as the catalyst. It was shown that the degradation during the dark Fenton reactions takes place during the first 2h and further prolongation of the reaction time does not lead to enhanced removals. The same holds true for the light-driven reactions. With the photo-Fenton reaction, fenitrothion was completely mineralized while the TOC contained in the atrazine solution was removed by 57%. Both compounds in their parent form were completely eliminated from the first 5 min of the oxidation both when being in the single-containing solutions and in their binary mixture. The oxidation of the TOC in the atrazine solution follows a two-stage second-order kinetic behavior which is attributed to the complex reaction pathways occurring during the oxidation while that of the TOC in the fenitrothion solutions follows a pseudo-first order degradation kinetic and that of binary mixture a two-stage degradation kinetics. The results obtained in this study, clearly indicate that the light-driven Fenton oxidation can be very efficient for the removal of atrazine and especially fenitrothion from polluted waters. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/19027929/Homogeneous_oxidation_of_aqueous_solutions_of_atrazine_and_fenitrothion_through_dark_and_photo_Fenton_reactions_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(08)01297-6 DB - PRIME DP - Unbound Medicine ER -