Journal article
Kinetics and mechanism for the sonophotocatalytic degradation of p -chlorobenzoic acid
Y He, F Grieser, M Ashokkumar
Journal of Physical Chemistry A | Published : 2011
DOI: 10.1021/jp203518s
Abstract
The advanced oxidation processes of sonolysis (213 kHz), photocatalysis, and a hybrid combination of both (sonophotocatalysis) have been used in the degradation of a representative aromatic carboxylic acid, p-chlorobenzoic acid (PCBA), in ambient air saturated aqueous solutions. The formation of degradation products were monitored quantitatively and qualitatively using HPLC and MS/MS. A kinetic model was used to account for the degradation of the PCBA in the presence of intermediate degradation products and also their formation and subsequent degradation. Under certain experimental conditions a small (20% enhancement) synergistic effect in the degradation rate was evident in the combined pro..
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Funding Acknowledgements
We thank the Particulate Fluids Processing Centre (PFPC), a special research centre funded by the Australian Research Council (ARC), for the financial support and for the infrastructural facilities provided. Y.H. thanks the University of Melbourne for the award of an International Postgraduate Research Scholarship (IPRS) and the Faculty of Science for a David Hay Memorial Fund writing-up award.