Title
Dispersed phase hold-up in a Graesser raining bucket contactor using aqueous two-phase systems
Date Issued
01 January 2006
Access level
open access
Resource Type
journal article
Author(s)
Giraldo-Zuniga A.
Coimbra J.
Minim L.
GARCIA ROJAS, EDWIN ELARD
Universidade Federal de Viçosa
Publisher(s)
Elsevier Ltd
Abstract
This study presents dispersed hold-up data for an aqueous two-phase system containing polyethylene glycol (PEG) 1500 Da and potassium phosphate (PPP) at pH 7 and 25 °C in a Graesser raining bucket contactor. The influences of the operational variables rotor speed and phase flow ratio on the hold-up were analyzed. Densities, viscosities and interfacial tension were measured. The results obtained were correlated by the equation proposed by Richardson and Zaki, for the description of the slip velocities. © 2005 Elsevier Ltd. All rights reserved.
Start page
302
End page
309
Volume
72
Issue
3
Language
English
OCDE Knowledge area
Biotecnología agrícola, Biotecnología alimentaria
Subjects
DOI
10.1016/j.jfoodeng.2004.11.037
Scopus EID
2-s2.0-24144434459
Source
Journal of Food Engineering
ISSN of the container
02608774
Sponsor(s)
The authors thank FAPEMIG, PADCT/CNPq (62.0167/97-1) and CAPES, for the financial support.
Sources of information: Directorio de Producción Científica Scopus