Process Engineering Characteristics of the Hollow Fiber Ultrafiltration of Skimmilk

Performance and mass-transfer characteristics of the ultrafiltration of skimmilk was studied using a pilot-scale hollow fiber membrane unit. The independent variables were transmembrane pressure, flow rate, temperature and feed concentration and the major measured variable was permeate flux (J). Physical properties such as density, viscosity and protein content of the retentate were experimentally determined while diffusivity was estimated from literature values. The dependence of physical properties of the ultrafiltered skimmilk on temperature and concentration were usually nonlinear, largely due to hydration effect and the interactions between protein molecules. The effect of processing factors on ultrafiltration flux were closely related to the degree of concentration polarization. No single property could fully account for the variation of processing performance at various process conditions.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Food Science

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Chiang, Been-Huang

• Agriculture, Food Science and Technology
• Engineering, General

Identifier

(UMI)AAI8309927

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/70072