Clogging of Microchannels by Nano-particles due to Hetero-coagulation in Elongational Flow
Abstract:
We have investigated flow-induced aggregation in highly concentrated colloidal dispersions exposed to strongly converging flow fields. A ring-slit device has been developed in order to investigate this phenomenon. Our experiments demonstrate that clogging of the microchannel is induced by hetero-coagulation between primary colloidal particles and micron-sized impurities present at concentration in the ppm range.
| Zugehörige Institution(en) am KIT | Institut für Mechanische Verfahrenstechnik und Mechanik (MVM) |
| Publikationstyp | Hochschulschrift |
| Publikationsjahr | 2013 |
| Sprache | Englisch |
| Identifikator | urn:nbn:de:swb:90-345184 KITopen-ID: 1000034518 |
| Verlag | Karlsruher Institut für Technologie (KIT) |
| Art der Arbeit | Dissertation |
| Fakultät | Fakultät für Chemieingenieurwesen und Verfahrenstechnik (CIW) |
| Institut | Institut für Mechanische Verfahrenstechnik und Mechanik (MVM) |
| Prüfungsdaten | 18.01.2013 |
| Schlagwörter | fow-induced aggregation, hetero-coagulation, elongational flow, microfluidics, colloidal dispersions |
| Referent/Betreuer | Willenbacher, N. |