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A method for measuring the imbibation rate of powder in a liquid

Hellborg, D.; Bergenståhl, Björn LU and Trägårdh, Christian LU (2010) In Chemical Engineering and Processing 49(6). p.599-604
Abstract
Mixing of powders into liquids is a common unit operation. Mixing can be divided into several steps: imbibation of the powder into the liquid being the first Under some circumstances, for instance, if the powder has poor wetting properties, imbibation can be the rate-determining step. In this study imbibation in a commercial mixer was studied and a method to measure powder imbibation in a model that simulates the commercial mixer was developed. The imbibation mechanism in the commercial mixer is based on a wave drawing the powder down into the liquid, and surface flow transporting it towards the wave A wave imbibation model was constructed based on the same mechanisms, in which physical parameters such as wave height, surface velocity and... (More)
Mixing of powders into liquids is a common unit operation. Mixing can be divided into several steps: imbibation of the powder into the liquid being the first Under some circumstances, for instance, if the powder has poor wetting properties, imbibation can be the rate-determining step. In this study imbibation in a commercial mixer was studied and a method to measure powder imbibation in a model that simulates the commercial mixer was developed. The imbibation mechanism in the commercial mixer is based on a wave drawing the powder down into the liquid, and surface flow transporting it towards the wave A wave imbibation model was constructed based on the same mechanisms, in which physical parameters such as wave height, surface velocity and surface residence time could be varied. An experimental procedure was used to determine the maximum imbibation rate Measurements were found to have good reproducibility, with a standard error of means of 4.7% for spray-dried sodium caseinate The maximum imbibation rates were found to be of the same magnitude in the commercial mixer and the wave imbibation model: 0.04 kg/s m in the commercial mixer and 0 06-0.16 kg/s m in the wave imbibation model for spray-dried sodium caseinate powder. (C) 2010 Elsevier B V. All rights reserved (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Liquid, Powder, Wetting, Imbibation, Mixing
in
Chemical Engineering and Processing
volume
49
issue
6
pages
599 - 604
publisher
Elsevier
external identifiers
  • wos:000280945800005
  • scopus:77954656998
ISSN
0255-2701
DOI
10.1016/j.cep.2010.05.003
language
English
LU publication?
yes
id
2e0ed18c-7840-4ce1-98a4-aab4e8533ddf (old id 1673955)
date added to LUP
2010-09-22 15:45:53
date last changed
2018-05-29 11:20:19
@article{2e0ed18c-7840-4ce1-98a4-aab4e8533ddf,
  abstract     = {Mixing of powders into liquids is a common unit operation. Mixing can be divided into several steps: imbibation of the powder into the liquid being the first Under some circumstances, for instance, if the powder has poor wetting properties, imbibation can be the rate-determining step. In this study imbibation in a commercial mixer was studied and a method to measure powder imbibation in a model that simulates the commercial mixer was developed. The imbibation mechanism in the commercial mixer is based on a wave drawing the powder down into the liquid, and surface flow transporting it towards the wave A wave imbibation model was constructed based on the same mechanisms, in which physical parameters such as wave height, surface velocity and surface residence time could be varied. An experimental procedure was used to determine the maximum imbibation rate Measurements were found to have good reproducibility, with a standard error of means of 4.7% for spray-dried sodium caseinate The maximum imbibation rates were found to be of the same magnitude in the commercial mixer and the wave imbibation model: 0.04 kg/s m in the commercial mixer and 0 06-0.16 kg/s m in the wave imbibation model for spray-dried sodium caseinate powder. (C) 2010 Elsevier B V. All rights reserved},
  author       = {Hellborg, D. and Bergenståhl, Björn and Trägårdh, Christian},
  issn         = {0255-2701},
  keyword      = {Liquid,Powder,Wetting,Imbibation,Mixing},
  language     = {eng},
  number       = {6},
  pages        = {599--604},
  publisher    = {Elsevier},
  series       = {Chemical Engineering and Processing},
  title        = {A method for measuring the imbibation rate of powder in a liquid},
  url          = {http://dx.doi.org/10.1016/j.cep.2010.05.003},
  volume       = {49},
  year         = {2010},
}