Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 145, Issue 1-2, Pages 65-71Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2006.10.089
Keywords
nanophotocatalysis; degradation; immobilized system; titania nanoparticle; agricultural organic pollutants
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Degradation and mineralization of two agricultural organic pollutants (Diazinon and Imidacloprid as N-heterocyclic aromatics) in aqueous solution by nanophotocatalysis using immobilized titania nanoparticles were investigated. Insecticides, Diazinon and Imidacloprid, are persistent pollutants in agricultural soil and watercourses. A simple and effective method was developed to immobilization of titania nanoparticles. UV-vis, ion chromatography (IC) and chemical oxygen demand (COD) analyses were employed. The effects of operational parameters such as H2O2 and inorganic anions (NO3-, Cl- and SO4 (2-)) were investigated. The mineralization of Diazinon and Imidacloprid was evaluated by monitoring of the formed inorganic anions. The selected pollutants are effectively degraded following first order kinetics model. Results show that the nanophotocatalysis using immobilized titania nanoparticle is an effective method for treatment Diazinon and Imidacloprid from contaminated water. (c) 2006 Elsevier B.V. All rights reserved.
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