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Comparison of advanced oxidation processes and identification of monuron photodegradation products in aqueous solution.
Chemosphere. 2006 Jun; 63(10):1718-27.C

Abstract

The photodegradation of monuron (3-(4-chlorophenyl)-1,1-dimethylurea) in aqueous solutions under simulated solar irradiation has been conducted by different advanced oxidation processes (UV/H(2)O(2), UV/H(2)O(2)/Fe(2+), UV/H(2)O(2)/TiO(2), UV/TiO(2), dark H(2)O(2)/Fe(3+)). The degradation rates were always higher for the homogeneous catalysis in photo-Fenton reactions (UV/H(2)O(2)/Fe(2+)) compared to the heterogeneous photocatalytic systems (TiO(2)/UV and UV/H(2)O(2)/TiO(2)). Optimal concentrations of Fe(2+) and H(2)O(2) for the abatement of the herbicide in the photo-Fenton system were found to be 1 mM Fe(II) and 10 mM H(2)O(2). Several intermediary products were identified using large volume injection micro-liquid chromatography with UV detection (mu-LC-UV), mu-LC-MS and GC-MS techniques and a degradation mechanism has been proposed.

Authors+Show Affiliations

Bobu M
Department of Inorganic Chemistry, Faculty of Industrial Chemistry, Technical University of Iasi, Mangeron, Romania. maria.bobu@kjemi.uio.no
Wilson S
No affiliation info available
Greibrokk T
No affiliation info available
Lundanes E
No affiliation info available
Siminiceanu I
No affiliation info available

MeSH

CatalysisHerbicidesHydrogen PeroxideIronMethylurea CompoundsOxidantsOxidation-ReductionPhotochemistryTitaniumUltraviolet RaysWater Pollutants, ChemicalWater Purification

Pub Type(s)

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

Language

eng

PubMed ID

16289213

Citation

Bobu, Maria, et al. "Comparison of Advanced Oxidation Processes and Identification of Monuron Photodegradation Products in Aqueous Solution." Chemosphere, vol. 63, no. 10, 2006, pp. 1718-27.
Bobu M, Wilson S, Greibrokk T, et al. Comparison of advanced oxidation processes and identification of monuron photodegradation products in aqueous solution. Chemosphere. 2006;63(10):1718-27.
Bobu, M., Wilson, S., Greibrokk, T., Lundanes, E., & Siminiceanu, I. (2006). Comparison of advanced oxidation processes and identification of monuron photodegradation products in aqueous solution. Chemosphere, 63(10), 1718-27.
Bobu M, et al. Comparison of Advanced Oxidation Processes and Identification of Monuron Photodegradation Products in Aqueous Solution. Chemosphere. 2006;63(10):1718-27. PubMed PMID: 16289213.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Comparison of advanced oxidation processes and identification of monuron photodegradation products in aqueous solution. AU - Bobu,Maria, AU - Wilson,Steven, AU - Greibrokk,Tyge, AU - Lundanes,Elsa, AU - Siminiceanu,Ilie, Y1 - 2005/11/09/ PY - 2005/03/21/received PY - 2005/09/20/revised PY - 2005/09/22/accepted PY - 2005/11/18/pubmed PY - 2006/8/19/medline PY - 2005/11/18/entrez SP - 1718 EP - 27 JF - Chemosphere JO - Chemosphere VL - 63 IS - 10 N2 - The photodegradation of monuron (3-(4-chlorophenyl)-1,1-dimethylurea) in aqueous solutions under simulated solar irradiation has been conducted by different advanced oxidation processes (UV/H(2)O(2), UV/H(2)O(2)/Fe(2+), UV/H(2)O(2)/TiO(2), UV/TiO(2), dark H(2)O(2)/Fe(3+)). The degradation rates were always higher for the homogeneous catalysis in photo-Fenton reactions (UV/H(2)O(2)/Fe(2+)) compared to the heterogeneous photocatalytic systems (TiO(2)/UV and UV/H(2)O(2)/TiO(2)). Optimal concentrations of Fe(2+) and H(2)O(2) for the abatement of the herbicide in the photo-Fenton system were found to be 1 mM Fe(II) and 10 mM H(2)O(2). Several intermediary products were identified using large volume injection micro-liquid chromatography with UV detection (mu-LC-UV), mu-LC-MS and GC-MS techniques and a degradation mechanism has been proposed. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16289213/Comparison_of_advanced_oxidation_processes_and_identification_of_monuron_photodegradation_products_in_aqueous_solution_ DB - PRIME DP - Unbound Medicine ER -