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Main Title: Coalescence efficiency model including electrostatic interactions in liquid/liquid dispersions
Author(s): Kamp, Johannes
Kraume, Matthias
Type: Article
Language Code: English
Is Part Of: 10.14279/depositonce-6528
Abstract: The drop size distribution is an essential process variable in liquid/liquid systems and relevant in many technical applications. It can be described by population balance equations. A coalescence efficiency model was developed to be able to describe the well-known coalescence inhibition due to changing pH value or salt concentration. The model includes the attractive van der Waals and repulsive electrostatic force according to the DLVO theory into the population balance equation framework. This DLVO model can extend existing simulations in a straightforward manner due to a conceptual implementation. Moreover, zeta potential measurements were performed and the model was applied to simulate experiments in a stirred Lank. Hence, the drop size distribution could be predicted well with changing pH value. The results are discussed in comparison to simulations with existing models in literature. (C) 2014 Elsevier Ltd. All rights reserved.
Issue Date: 2015
Date Available: 16-Feb-2018
DDC Class: 629 Andere Fachrichtungen der Ingenieurwissenschaften
Subject(s): population balance
electrostatic force
zeta potential
coalescence efficiency
Journal Title: Chemical Engineering Science
Publisher: Elsevier
Publisher Place: Amsterdam [u.a.]
Volume: 126
Publisher DOI: 10.1016/j.ces.2014.11.045
Page Start: 132
Page End: 142
EISSN: 1873-4405
ISSN: 0009-2509
Appears in Collections:FG Verfahrenstechnik » Publications

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