Regensburg 2016 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 26: Poster session II

MM 26.24: Poster

Dienstag, 8. März 2016, 18:30–20:30, Poster B3

Interaction of hydrodynamic cavitation bubbles with textile linen in an open reactor — Patrick Casper, Tamara Neumann-Schmidt, •Florian Szillat, Hans-Günter Hloch, and Jürgen Bohnen — wfk - Cleaning Technology Institute, D-47807 Krefeld, Deutschland

The amount of individually and fashionably Corporate Identity clothing is increasing in hygienically demanding areas. During reprocessing of such clothing, extensive hygiene measures have to be fulfilled. Meeting high demands on non-destructive textile processing and sustainability as well as hygiene requirements, the use of hydrodynamic cavitation is of great interest, as it is providing mechanical impact and reactive oxygen species under textile preserving conditions. Recent studies (e.g. [1]) demonstrated the capability of hydrodynamic cavitation in the field of pharmaceuticals/chemicals degradation. These systems are based on venturi nozzle or orifice plate design in closed tubular systems, whereas an open environment is necessary for reprocessing of clothing. To obtain a better understanding of behaviour of hydrodynamic cavitation bubbles outside of nozzles and such tubular systems their distribution in an open reactor is studied using luminescence. Furthermore, interplay of parameters and nozzle design is investigated by means of dye destruction analysis. Implications of bleaching and disinfection as well as influence of design and parameters on the use of hydrodynamic cavitation at water-textile interfaces will be discussed.

[1] P. Braeutigam et al. Water Research 46 (2012) 2469