Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae

Numerous studies have proven that the existence of turbulence effect could promote flux enhancement in the crossflow microfiltration channel. These turbulence effects can be generated by the introduction of turbulence promoters like helical baffles. Helical inserts reduce hold-up in the feed channel...

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Main Authors:	Ahmad, A.L., Mariadas, A., Lau, K.K.
Format:	Article
Published:	Taylor and Francis 2005
Subjects:	TP Chemical technology
Online Access:	http://www.tandf.co.uk/journals/authors/lsstauth.asp http://www.tandf.co.uk/journals/authors/lsstauth.asp

id	utp-2675
recordtype	eprints
spelling	utp-26752010-08-05T04:06:13Z Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae Ahmad, A.L. Mariadas, A. Lau, K.K. TP Chemical technology Numerous studies have proven that the existence of turbulence effect could promote flux enhancement in the crossflow microfiltration channel. These turbulence effects can be generated by the introduction of turbulence promoters like helical baffles. Helical inserts reduce hold-up in the feed channel: increase fluid velocity and wall shear rates: and produce secondary flows or instabilities. The aim of this work was to investigate the influence of turbulence effects in the feed channel on permeate flux during the microfiltration of Saccharomyces cerevisiae solutions. Tubular, single channel ceramic membranes with a nominal pore size of 0.2 μm were used. Variations of the helical baffle geometries, which are the number of turns per baffle length, were investigated. It was found that the insertion of helical baffles managed to increase the permeate flux. The optimum number of turns is four turns per 50 mm, which demonstrated the lowest cake resistance, Rc, and highest permeation flux, J, for particular transmembrane pressure, δP. The increment of permeation flux reaches 88.2% while the cake resistance is reduced to 70.62% compared to the run without baffles. Taylor and Francis 2005 Article PeerReviewed http://www.tandf.co.uk/journals/authors/lsstauth.asp Ahmad, A.L. and Mariadas, A. and Lau, K.K. (2005) Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae. Separation Science and Technology, 40 (6). pp. 1213-1225. ISSN 01496395 http://eprints.utp.edu.my/2675/
institution	Universiti Teknologi Petronas Universiti Teknologi Petronas
repository_type	Digital Repository
institution_category	Local University
building	UTP Repository
collection	Online Access
topic	TP Chemical technology
spellingShingle	TP Chemical technology Ahmad, A.L. Mariadas, A. Lau, K.K. Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae
description	Numerous studies have proven that the existence of turbulence effect could promote flux enhancement in the crossflow microfiltration channel. These turbulence effects can be generated by the introduction of turbulence promoters like helical baffles. Helical inserts reduce hold-up in the feed channel: increase fluid velocity and wall shear rates: and produce secondary flows or instabilities. The aim of this work was to investigate the influence of turbulence effects in the feed channel on permeate flux during the microfiltration of Saccharomyces cerevisiae solutions. Tubular, single channel ceramic membranes with a nominal pore size of 0.2 μm were used. Variations of the helical baffle geometries, which are the number of turns per baffle length, were investigated. It was found that the insertion of helical baffles managed to increase the permeate flux. The optimum number of turns is four turns per 50 mm, which demonstrated the lowest cake resistance, Rc, and highest permeation flux, J, for particular transmembrane pressure, δP. The increment of permeation flux reaches 88.2% while the cake resistance is reduced to 70.62% compared to the run without baffles.
format	Article
author	Ahmad, A.L. Mariadas, A. Lau, K.K.
author_facet	Ahmad, A.L. Mariadas, A. Lau, K.K.
author_sort	Ahmad, A.L.
title	Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae
title_short	Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae
title_full	Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae
title_fullStr	Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae
title_full_unstemmed	Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae
title_sort	flux enhancement by introducing turbulence effect for microfiltration of saccharamyces cerevisiae
publisher	Taylor and Francis
publishDate	2005
url	http://www.tandf.co.uk/journals/authors/lsstauth.asp http://www.tandf.co.uk/journals/authors/lsstauth.asp
first_indexed	2018-09-08T10:11:59Z
last_indexed	2018-09-08T10:11:59Z
_version_	1611033759941918720

Flux Enhancement by Introducing Turbulence Effect for Microfiltration of Saccharamyces Cerevisiae

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