Fine ultrafiltration of concentrated oligosaccharide solutions – Hydration and pore size distribution effects

Victor Aguirre Montesdeoca, Anja E.M. Janssen, R.M. Boom, A. van der Padt

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The effects of high concentration in the fine ultrafiltration of a solution of oligosaccharides were investigated both experimentally and using a mass transfer model based on the Maxwell-Stefan equations. At high concentrations, negative retentions were found for the smaller sugars, which cannot be ascribed to effects of ionic interaction, membrane adsorption or fouling. Instead, the behaviour could be quantitatively described by incorporating the effects of the thermodynamic non-ideality of the solutions and the effects of the pore size distribution. Experiments were performed to validate the model using as feed an oligosaccharide mixture with a concentration up to a 35% w/w. The model predictions allows the identification of an optimum feed concentration at which the efficiency of the separation is maximized. The results show that the fine ultrafiltration of sugars can be well described and predicted when taking into account the relevant thermodynamic interactions, the membrane pore size distribution and pressure effects.

Original languageEnglish
Pages (from-to)161-176
JournalJournal of Membrane Science
Volume580
DOIs
Publication statusPublished - 15 Jun 2019

Fingerprint

Oligosaccharides
Ultrafiltration
Thermodynamics
Hydration
Pore size
hydration
porosity
Sugars
Membranes
Adsorption
sugars
Pressure effects
Maxwell equations
Fouling
Pressure
Identification (control systems)
membranes
Mass transfer
thermodynamics
fouling

Keywords

  • High concentration
  • Hydration
  • Maxwell-Stefan equations
  • Oligosaccharides
  • Pore size distribution

Cite this

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title = "Fine ultrafiltration of concentrated oligosaccharide solutions – Hydration and pore size distribution effects",
abstract = "The effects of high concentration in the fine ultrafiltration of a solution of oligosaccharides were investigated both experimentally and using a mass transfer model based on the Maxwell-Stefan equations. At high concentrations, negative retentions were found for the smaller sugars, which cannot be ascribed to effects of ionic interaction, membrane adsorption or fouling. Instead, the behaviour could be quantitatively described by incorporating the effects of the thermodynamic non-ideality of the solutions and the effects of the pore size distribution. Experiments were performed to validate the model using as feed an oligosaccharide mixture with a concentration up to a 35{\%} w/w. The model predictions allows the identification of an optimum feed concentration at which the efficiency of the separation is maximized. The results show that the fine ultrafiltration of sugars can be well described and predicted when taking into account the relevant thermodynamic interactions, the membrane pore size distribution and pressure effects.",
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Fine ultrafiltration of concentrated oligosaccharide solutions – Hydration and pore size distribution effects. / Aguirre Montesdeoca, Victor; Janssen, Anja E.M.; Boom, R.M.; van der Padt, A.

In: Journal of Membrane Science, Vol. 580, 15.06.2019, p. 161-176.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Fine ultrafiltration of concentrated oligosaccharide solutions – Hydration and pore size distribution effects

AU - Aguirre Montesdeoca, Victor

AU - Janssen, Anja E.M.

AU - Boom, R.M.

AU - van der Padt, A.

PY - 2019/6/15

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AB - The effects of high concentration in the fine ultrafiltration of a solution of oligosaccharides were investigated both experimentally and using a mass transfer model based on the Maxwell-Stefan equations. At high concentrations, negative retentions were found for the smaller sugars, which cannot be ascribed to effects of ionic interaction, membrane adsorption or fouling. Instead, the behaviour could be quantitatively described by incorporating the effects of the thermodynamic non-ideality of the solutions and the effects of the pore size distribution. Experiments were performed to validate the model using as feed an oligosaccharide mixture with a concentration up to a 35% w/w. The model predictions allows the identification of an optimum feed concentration at which the efficiency of the separation is maximized. The results show that the fine ultrafiltration of sugars can be well described and predicted when taking into account the relevant thermodynamic interactions, the membrane pore size distribution and pressure effects.

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KW - Pore size distribution

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