Tangential Ultrafiltration of Aqueous Saccharomyces cerevisiae Suspensions

M. F. J. Eusébio
Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Monte de Caparica, 2829-516 Caparica, Portugal
Carlos M. Silva , Patrícia S. Neves , Francisco A. Da Silva and Ana M. R. B. Xavier
Departamento de Química, Universidade de Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal
J. Chem. Educ., 2008, 85 (1), p 130
DOI: 10.1021/ed085p130
Publication Date (Web): January 1, 2008

Abstract

Experimental work on ultrafiltration is presented to illustrate the practical and theoretical principles of this separation technique. The laboratory exercise comprises experiments with pure water and with aqueous Saccharomyces cerevisiae (from commercial Baker's yeast) suspensions. With this work students detect the characteristic phenomena involved (polarization and gel layer formation) and measure important process variables, such as, solvent permeance, gel layer concentration, limiting fluxes, and convective mass-transfer coefficient.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Chemical Engineering

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Laboratory Equipment / Apparatus
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History

  • Received: August 03, 2009

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