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Title: Boron mass transfer during seeded microfiltration.
Authors: Holdich, R.G.
Cumming, Iain W.
Perni, Stefano
Keywords: Ion exchange
Membrane
Sorption
Diffusion
Issue Date: 2006
Publisher: Elsevier © Institution of Chemical Engineers
Citation: HOLDICH, R.G., CUMMING, I.W. and PERNI, S., 2006. Boron mass transfer during seeded microfiltration. Chemical Engineering Research and Design, 84 (A1), pp. 60 - 68
Abstract: Seeded microfiltration combines the processes of microfiltration and sorption of a solute onto a solid particle, including ion exchange. The process can be performed for investigations in simple stirred cells, for laboratory mass transfer analysis, and for process-scale applications in crossflow filtration systems. Seeded microfiltration of boron at feed concentrations of up to 4 ppm using a N-glucamine type ion exchange resin showed that the process was dependent on the internal diffusion of boron inside the resin particle, with an effective particle diffusivity of 5.5 x 10−10m2 s−1. The kinetics of the process were modelled by a coupled mass transfer model, based on a well mixed stirred system, aqueous film diffusion, particle diffusion and a Langmuir type isotherm for the equilibrium conditions. The modelling suggests that a resin particle diameter of 50μm would provide improved boron extraction performance, whilst easily being retained within the microfiltration process. A comparison of the analysis of mass transfer between a conventional batch stirred cell and the continuously fed seeded microfiltration system shows that the continuously fed system has many advantages for the laboratory investigation of mass transfer parameters.
Description: This article was published in the journal, Chemical Engineering Research and Design [Elsevier © Institution of Chemical Engineers]. The definitive version is available at: http://www.sciencedirect.com/science/article/pii/S0263876206728581
Version: Accepted for publication
DOI: dx.doi.org/10.1205/cherd.05015
URI: https://dspace.lboro.ac.uk/2134/9309
Publisher Link: http://www.sciencedirect.com/science/article/pii/S0263876206728581
ISSN: 0263-8762
Appears in Collections:Published Articles (Chemical Engineering)

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