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Effect of iron speciation on the photodegradation of Monuron in combined photocatalytic systems with immobilized or suspended TiO2

  1. 1. 0309799 - UFCH-W 2010 RIV DE eng J - Journal Article
    Měšťánková, H. - Mailhot, G. - Jirkovský, Jaromír - Krýsa, J. - Bolte, M.
    Effect of iron speciation on the photodegradation of Monuron in combined photocatalytic systems with immobilized or suspended TiO2.
    [Stanovení podílu jednotlivých částic Fe fotodegradací monuronu v kombinaci fotokatalytických systémů s imobilizovaným nebo suspemdovaným TiO2.]
    Environmental Chemistry Letters. Roč. 7, č. 2 (2009), s. 127-132. ISSN 1610-3653
    Institutional research plan: CEZ:AV0Z40400503
    Keywords : photocatalysis * TiO2 * iron Fe(III)/Fe(II) * monuron
    Subject RIV: CF - Physical ; Theoretical Chemistry
    Impact factor: 2.109, year: 2009

    Photodegradation kinetics of Monuron (3-(4-chlorophenyl)-1,1-dimethylurea) in photoreactor with immobilized and suspended TiO2 photocatalyst were studied. The effect of addition of ferric or ferrous perchlorate was investigated. Whatever the concentration of Fe(III/II) added there is no significant negative effect on the photodegradation rate of pollutants. On the contrary, depending on speciation and concentration of iron salts, slight or marked acceleration of the photodegradation kinetics was observed. This positive influence was more pronounced in the case of TiO2 suspensions than for TiO2 layers. Fe(III) was generally more effective than Fe(II).

    Práce se zabývá stanovením podílu jednotlivých částic Fe fotodegradací monuronu v kombinaci fotokatalytických systémů s imobilizovaným nebo suspemdovaným TiO2.
    Permanent Link: http://hdl.handle.net/11104/0161837