Titre :

Structure and rate of growth of whey protein deposit from in situ electrical conductivity during fouling in a plate heat exchanger

Auteur(s) :

Guérin, Romuald [Auteur]
Laboratoire de Génie des Procédés et Technologie Alimentaires [LGPTA]
Ronse, Gilles [Auteur]
Laboratoire de Génie des Procédés et Technologie Alimentaires [LGPTA]
Bouvier, Laurent [Auteur]
Laboratoire de Génie des Procédés et Technologie Alimentaires [LGPTA]
Debreyne, Pascal [Auteur]
Laboratoire de Génie des Procédés et Technologie Alimentaires [LGPTA]
Delaplace, Guillaume [Auteur]
Laboratoire de Génie des Procédés et Technologie Alimentaires [LGPTA]
Ronse, Gilles [Auteur]

Titre de la revue :

Chemical Engineering Science

Nom court de la revue :

Chemical Engineering Science

Numéro :

62

Pagination :

1948-1957

Éditeur :

Elsevier BV

Date de publication :

2007-04

ISSN :

0009-2509

Mot(s)-clé(s) en anglais :

Fouling
Whey protein
Calcium ions
Reynolds number
Shear stress
Deposit structure
Plate heat exchanger
Electrical conductivity

Discipline(s) HAL :

Physique [physics]/Matière Condensée [cond-mat]/Science des matériaux [cond-mat.mtrl-sci]
Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
Sciences de l'ingénieur [physics]/Génie des procédés
Sciences du Vivant [q-bio]/Ingénierie des aliments
Sciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire/Biologie moléculaire

Résumé en anglais : [en]

The influences of calcium concentrations , Reynolds number (2000–5000) and temperature () upon the deposit structure and the rate of growth deposition have been investigated in a plate heat exchanger. This was done from ...
Lire la suite >The influences of calcium concentrations , Reynolds number (2000–5000) and temperature () upon the deposit structure and the rate of growth deposition have been investigated in a plate heat exchanger. This was done from in situ measurements of the deposit electrical conductivity via implementation of stainless steel electrodes in channels combined with assessments of deposit thickness. Calcium ions affect structures of deposits and increase the rate of deposit growth upon heated surfaces. This was attributed to the formation of weaker size aggregates at higher calcium concentrations and a higher number of calcium bindings, which reinforce adhesion forces between protein aggregates. Structures and appearances of deposits also were affected by flow rates whatever the calcium concentrations. Deposit growth rate was enhanced by increasing flow rate below a critical Reynolds number comprised between 3200 and 5000. On the contrary, above the critical Reynolds number, a limitation of the deposit and/or an escape of the deposit from the fouled layer into the core fluid occurred, caused by the predominance of particle breakage on the deposit formation. Fouling tended to be reduced at higher flow rate. It was noteworthy that rates of growth decrease during fouling experiments which may be explained by an increase in local shear stresses leading to particle breakage.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Processus aux Interfaces et Hygiène des Matériaux (PIHM)

Date de dépôt :

2022-02-01T13:22:52Z
2022-02-03T10:52:27Z