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The Effect of Ultrasound on Electrochemical Processes. Edition No. 1

  • ID: 1912545
  • November 2009
  • 264 Pages
  • VDM Publishing House
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The effect of ultrasound on dye degradation and the anodic behaviour of copper was studied. Dye degradation was studied by bulk sonolysis and bulk electrolysis of aqueous solutions containing three model dyes. Electrolytic dye degradation was achieved using potassium chloride, potassium sulphate, and potassium nitrate as electrolytes. Electrochemical degradation was fastest using potassium chloride since chlorine and hence hypochlorite (bleach) were generated during electrolysis. Ultrasound was found to degas chlorine and this resulted in slow sonoelectrochemical degradation rates. This was not the case when potassium sulphate and potassium nitrate were used as electrolyte and the sonoelectrochemical process revealed a synergistic effect of ultrasound and electrochemistry during dye degradation. This synergistic effect was a result of the improved mass transport during sonication. The electrochemistry of copper was studied by anodic polarisation of a copper electrode and the effect of ultrasound upon the voltammetry and chronoamperometry of copper was established. Anodic dissolution of copper was found to be promoted by sonication.

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Mario, Plattes.
Mario Plattes obtained his degree in Chemical Engineering from the Fachhochschule Aachen with specialization in Process and Environmental Technology. He later obtained a PhD in Sonoelectrochemistry from Coventry University. Mario Plattes works today as a Research Engineer for the public research centre CRP Henri Tudor in Luxembourg.

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