| Zugriffsnummer | 23064 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Space-resolved sonochemistry in cleaning vessels in comparison to mechanical effects |
| Autor(in); Institution |
Kling, Christoph; 1.6, Schall, PTB-Braunschweig
Koch, Christian; 1.6, Schall, PTB-Braunschweig
Jenderka, Klaus-Vitold; 1.6, Schall, PTB-Braunschweig
|
| Quelle/Jahr | NAG/DAGA 2009 : International Conference on Acoustics, Rotterdam, 23 - 26 March 2009 ; proceedings:(2009), 1354 - 1356 |
| Availability | [CD-ROM] ; file name:data\\articles\\000149.pdf |
| Herausgeber(in) |
Boone, Marinus M.
|
| ISBN | 978-3-9808659-6-8 |
| Verlag | Berlin: DEGA |
| Konferenzangaben | International Conference on Acoustics, NAG/DAGA 2009, Rotterdam, 23-26, March, 2009, The Netherlands |
| Klassifikationscode | PACS: 43.35.+d |
| Zusammenfassung | There are many applications of ultrasound in medical science and engineering which are based on the physical effect of cavitation in liquid media such as cleaning and sonochemistry. Unfortunately, cavitation is a stochastic process and is strongly influenced by environmental conditions. This makes it difficult to control or even optimise a certain application process. Up to now, empirical assessment methods are used to account for the influence of parameters like temperature, frequency, vessel geometry, surfactants, input power and others because it lacks of an objective description of the different cavitation processes. Therefore, a project at PTB aims to relate different cavitation effects to each other and to measurement parameters obtained from the underlying sound field. In this context, sonochemical reaction in a cleaning vessel was studied. Simple oxidation of iodide ions was used to investigate the influence of different parameters. The reaction was restricted to small closed volumes inside the filled vessel to obtain spatial resolution of the cavitation action. The chemical efficiency of ultrasonic irradiation was analysed spectrometrically. The spatially resolved data were compared to quantitative results from mechanical cavitation effects. |
