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Main Title: Modelling of coalescence in turbulent liquid/liquid dispersions considering droplet charge
Author(s): Kamp, Johannes
Nachtigall, Stephanie
Maaß, Sebastian
Kraume, Matthias
Type: Article
Language Code: English
Is Part Of: 10.14279/depositonce-6528
Abstract: Drop size distributions in liquid/liquid systems within a turbulent flow, being an integral part of many technical applications, can be simulated solving population balance equations. Experimental investigations in stirred toluene/water systems at constant ionic strength of 0.1 mol/L showed that with pH values higher than 11, coalescence is hindered considerably due to electrostatic effects. Within this work, two designated models are used to simulate the transient drop size distributions in a stirred tank, showing that the influence of droplet charge due to a change in pH value or ion concentration cannot be predicted satisfactorily by existing models. This finding motivates a new modelling approach implementing the DLVO theory into the population balance framework.
Issue Date: 2012
Date Available: 16-Feb-2018
DDC Class: 629 Andere Fachrichtungen der Ingenieurwissenschaften
Subject(s): population balance equation
electrostatic force
droplet charge
Journal Title: Technical Transactions
Publisher: Politechnika Krakowska
Publisher Place: Kraków
Volume: 109
Page Start: 113
Page End: 124
ISSN: 0137-592X
Appears in Collections:FG Verfahrenstechnik » Publications

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