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Photoassisted Degradation of a Herbicide Derivative, Dinoseb, in Aqueous Suspension of Titania

Mir, Niyaz A. and Haque, Malik M. and Khan, Abuzar and Muneer, Mohd and Boxall, Colin (2012) Photoassisted Degradation of a Herbicide Derivative, Dinoseb, in Aqueous Suspension of Titania. Scientific world journal, 2012. -. ISSN 1537-744X

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    Abstract

    The titanium dioxide (TiO2) photoassisted degradation of herbicide dinoseb has been examined in aqueous suspensions under UV light irradiation. The degradation kinetics were studied under various conditions such as substrate concentration, type of catalyst, catalyst dosage, pH, and light intensity as well as in presence of electron acceptors such as hydrogen peroxide, potassium bromate, and potassium persulphate under continuous air purging, and the degradation rates were found to be strongly influenced by these parameters. The Degussa P25 was found to be more efficient photocatalyst as compared to other photocatalysts tested. Dinoseb was found to degrade efficiently in acidic pH and all the electron acceptors studied enhanced the degradation rate. The results manifested that the photocatalysis of dinoseb followed pseudo-first-order kinetics. A qualitative study of the degradation products generated during the process was performed by GC-MS, and a degradation mechanism was proposed.

    Item Type: Article
    Journal or Publication Title: Scientific world journal
    Additional Information: Copyright © 2012 Niyaz A. Mir et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
    Subjects: T Technology > TA Engineering (General). Civil engineering (General)
    Departments: Faculty of Science and Technology > Engineering
    ID Code: 60072
    Deposited By: ep_importer_pure
    Deposited On: 19 Nov 2012 09:04
    Refereed?: Yes
    Published?: Published
    Last Modified: 10 Apr 2014 00:20
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/60072

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