Photodegradation kinetics of aniline, 4-ethylaniline, and 4-chloroaniline in aqueous suspension of polycrystalline titanium dioxide |
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| Authors: | V Augugliaro A Bianco Prevot V Loddo G Marcì L Palmisano E Pramauro M Schiavello |
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| Institution: | (1) Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy;(2) Dipartimento di Chimica Analitica, Università di Torino, Via P. Giuria 5, 10125 Torino, Italy |
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| Abstract: | The photodegradation process of aniline, 4-ethylaniline, and 4-chloroaniline in aqueous suspension of irradiated TiO2 (anatase) powder has been investigated. A batch photoreactor with immersed lamp irradiating in the near-UV region has been
used for carrying out the reactivity experiments. For each substrate the influence of the initial concentration of organic
compound and of pH on the degradation rate has been investigated. The main intermediates and the end products have been identified
and determined, the total mass balance being satisfied. The kinetic modelling of the series of reactions occurring in the
system has been satisfactorily carried out with a Langmuir-Hinshelwood rate law. The values of the parameters involved in
the model have been also determined. |
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