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Pure Appl. Chem. Vol. 73, No. 12, pp. 1957-1968 (2001)

Pure and Applied Chemistry

Vol. 73, Issue 12

Degradation of dye effluent*

J. P. Lorimer, T. J. Mason, M. Plattes, S. S. Phull, and D. J. Walton

School of Science and Environment, Coventry University, Coventry CV1 5FB, UK

Abstract: Solutions of both basic and acidic dyes were subject to sonolysis, electrolysis, and sonoelectrolysis. Only basic dyes were decolorized by ultrasound alone. Removal of the acidic dye Sandolan Yellow required the use of an electrooxidation process. The rate of electrochemical decolorization in the absence of ultrasound was dependent on the type of electrolyte, the electrolyte concentration, the reaction temperature, and the current density. The sonoelectrooxidation of Sandalon Yellow needed to be performed in a sealed cell to minimize the effects of ultrasonic degassing.

* An issue of reviews and research papers based on presentations made at the IUPAC/ICSU Workshop on Electrochemistry and Interfacial Chemistry in Environmental Clean-up and Green Chemical Processes, Coimbra, Portugal, 6-7 April, 2001.
** Corresponding author.
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