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A method for estimating effective coalescence rates during emulsification from oil transfer experiments.

Håkansson, Andreas LU ; Trägårdh, Christian LU and Bergenståhl, Björn LU (2012) In Journal of Colloid and Interface Science 374(1). p.25-33
Abstract
The Oil Transfer Technique (OTT) was developed by Taisne et al. [1] to measure coalescence during emulsification and has been applied since in several studies. One of the main drawbacks of this technique is that it only gives a qualitative measure of coalescence. This paper proposes a new evaluation method of OTT experimental results for estimating qualitative coalescence rates, e.g. for investigating the scaling of coalescence with emulsification parameters (such as homogenizing pressure, and emulsifier concentration). The method is based on comparison with simulated OTT experiments using bivariate Population Balance Equation models. Simulations have been performed under a wide variety of conditions in order to investigate the influence... (More)
The Oil Transfer Technique (OTT) was developed by Taisne et al. [1] to measure coalescence during emulsification and has been applied since in several studies. One of the main drawbacks of this technique is that it only gives a qualitative measure of coalescence. This paper proposes a new evaluation method of OTT experimental results for estimating qualitative coalescence rates, e.g. for investigating the scaling of coalescence with emulsification parameters (such as homogenizing pressure, and emulsifier concentration). The method is based on comparison with simulated OTT experiments using bivariate Population Balance Equation models. Simulations have been performed under a wide variety of conditions in order to investigate the influence of assumptions on coalescence and fragmentation kernels. These investigations show that the scaling of coalescence rates could be determined accurately when the scaling of efficient residence time of drops in the active region of homogenization is known. The proposed evaluation method is also exemplified by analyzing OTT data from two previously published studies. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Colloid and Interface Science
volume
374
issue
1
pages
25 - 33
publisher
Elsevier
external identifiers
  • wos:000302446900004
  • pmid:22369981
  • scopus:84858748798
ISSN
1095-7103
DOI
10.1016/j.jcis.2011.12.079
language
English
LU publication?
yes
id
bc10827f-c40f-4528-a2ad-9fe6c1f6171b (old id 2432485)
date added to LUP
2012-04-04 11:46:07
date last changed
2017-01-01 04:15:01
@article{bc10827f-c40f-4528-a2ad-9fe6c1f6171b,
  abstract     = {The Oil Transfer Technique (OTT) was developed by Taisne et al. [1] to measure coalescence during emulsification and has been applied since in several studies. One of the main drawbacks of this technique is that it only gives a qualitative measure of coalescence. This paper proposes a new evaluation method of OTT experimental results for estimating qualitative coalescence rates, e.g. for investigating the scaling of coalescence with emulsification parameters (such as homogenizing pressure, and emulsifier concentration). The method is based on comparison with simulated OTT experiments using bivariate Population Balance Equation models. Simulations have been performed under a wide variety of conditions in order to investigate the influence of assumptions on coalescence and fragmentation kernels. These investigations show that the scaling of coalescence rates could be determined accurately when the scaling of efficient residence time of drops in the active region of homogenization is known. The proposed evaluation method is also exemplified by analyzing OTT data from two previously published studies.},
  author       = {Håkansson, Andreas and Trägårdh, Christian and Bergenståhl, Björn},
  issn         = {1095-7103},
  language     = {eng},
  number       = {1},
  pages        = {25--33},
  publisher    = {Elsevier},
  series       = {Journal of Colloid and Interface Science},
  title        = {A method for estimating effective coalescence rates during emulsification from oil transfer experiments.},
  url          = {http://dx.doi.org/10.1016/j.jcis.2011.12.079},
  volume       = {374},
  year         = {2012},
}