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Application of bipolar membrane electrodialysis for acidification of skim milk. A comprehensive study on process performance and effects on ion-exchange membranes

Merkel, Arthur ; Rudolph, Gregor LU orcid ; Suwal, Shyam ; Lipnizki, Frank LU orcid ; Lillevang, Søren K. and Ahrné, Lilia (2024) In Journal of Membrane Science 694.
Abstract

Bipolar membrane electrodialysis (EDBM) can be applied for the electro-acidification of skim milk (SM) using a water-splitting effect. A new method of SM acidification gives opportunities and perspectives to the development of alternative and novel products in the dairy industry. The present study assessed the effect of temperatures from 5 °C to 30 °C of EDBM on the electro-acidification of SM in terms of the mineral composition of the side streams. The mechanisms of ion transport during electro-acidification by bipolar membranes (BMs) coupled with cation-exchange membranes (CMs) were investigated. The results showed that the pH of the SM was decreased by ∼14.3% through the proton ions generated due to a water-splitting reaction in the... (More)

Bipolar membrane electrodialysis (EDBM) can be applied for the electro-acidification of skim milk (SM) using a water-splitting effect. A new method of SM acidification gives opportunities and perspectives to the development of alternative and novel products in the dairy industry. The present study assessed the effect of temperatures from 5 °C to 30 °C of EDBM on the electro-acidification of SM in terms of the mineral composition of the side streams. The mechanisms of ion transport during electro-acidification by bipolar membranes (BMs) coupled with cation-exchange membranes (CMs) were investigated. The results showed that the pH of the SM was decreased by ∼14.3% through the proton ions generated due to a water-splitting reaction in the bipolar interface region. Since the BMs and CMs are suspected to change their properties at different temperatures in the high protein solution, their properties and characteristics were investigated. The EDBM performance parameters were calculated. Furthermore, performance efficiency coefficients of the EDBM process as mass flux (J), capacity (CF), specific energy consumption (E) and the current efficiency (η) were calculated.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Bipolar membrane electrodialysis, Calcium, Electro-acidification, Fouling, mCT method, Skim milk
in
Journal of Membrane Science
volume
694
article number
122429
publisher
Elsevier
external identifiers
  • scopus:85182589283
ISSN
0376-7388
DOI
10.1016/j.memsci.2024.122429
language
English
LU publication?
yes
id
c118e4fe-ebde-4380-8a0e-8cba40a9c914
date added to LUP
2024-01-31 14:31:35
date last changed
2024-02-01 14:18:40
@article{c118e4fe-ebde-4380-8a0e-8cba40a9c914,
  abstract     = {{<p>Bipolar membrane electrodialysis (EDBM) can be applied for the electro-acidification of skim milk (SM) using a water-splitting effect. A new method of SM acidification gives opportunities and perspectives to the development of alternative and novel products in the dairy industry. The present study assessed the effect of temperatures from 5 °C to 30 °C of EDBM on the electro-acidification of SM in terms of the mineral composition of the side streams. The mechanisms of ion transport during electro-acidification by bipolar membranes (BMs) coupled with cation-exchange membranes (CMs) were investigated. The results showed that the pH of the SM was decreased by ∼14.3% through the proton ions generated due to a water-splitting reaction in the bipolar interface region. Since the BMs and CMs are suspected to change their properties at different temperatures in the high protein solution, their properties and characteristics were investigated. The EDBM performance parameters were calculated. Furthermore, performance efficiency coefficients of the EDBM process as mass flux (J), capacity (C<sub>F</sub>), specific energy consumption (E) and the current efficiency (η) were calculated.</p>}},
  author       = {{Merkel, Arthur and Rudolph, Gregor and Suwal, Shyam and Lipnizki, Frank and Lillevang, Søren K. and Ahrné, Lilia}},
  issn         = {{0376-7388}},
  keywords     = {{Bipolar membrane electrodialysis; Calcium; Electro-acidification; Fouling; mCT method; Skim milk}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Membrane Science}},
  title        = {{Application of bipolar membrane electrodialysis for acidification of skim milk. A comprehensive study on process performance and effects on ion-exchange membranes}},
  url          = {{http://dx.doi.org/10.1016/j.memsci.2024.122429}},
  doi          = {{10.1016/j.memsci.2024.122429}},
  volume       = {{694}},
  year         = {{2024}},
}