Effect of iron speciation on the photodegradation of Monuron in combined photocatalytic systems with immobilized or suspended TiO2 - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Environmental Chemistry Letters Année : 2009

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

Gilles Mailhot
J. Jirkovsky
  • Fonction : Auteur
J. Krysa
  • Fonction : Auteur

Résumé

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).
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Dates et versions

hal-00398851 , version 1 (25-06-2009)

Identifiants

  • HAL Id : hal-00398851 , version 1

Citer

H. Mestankova, Gilles Mailhot, J. Jirkovsky, J. Krysa, Michèle Bolte. Effect of iron speciation on the photodegradation of Monuron in combined photocatalytic systems with immobilized or suspended TiO2. Environmental Chemistry Letters, 2009, 7, pp.127-132. ⟨hal-00398851⟩
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