SPLITT Cell Analytical Separation of Silica Particles. Non-Specific Crossover Effects: Does the Shear-Induced Diffusion Play a Role? |
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Authors: | C Contado M Hoyos |
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Institution: | (1) Department of Chemistry, University of Ferrara, via L. Borsari 46, 44100 Ferrara, Italy;(2) Laboratoire de Physique et Mécanique des Milieux Hétérogènes, ècole Supérieure de Physique et de Chimie Industrielles, 10 rue Vauquelin, 75231 Paris Cedex 05, France |
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Abstract: | The gravitational split-flow lateral transport thin fractionation is known to be a fast, simple, theoretically tractable and
tunable tool for the binary separation of molecular or particulate samples into different dimensional fractions. This fractionation
is performed in a so-called SPLITT cell and is due to the combined effect of the gravitational force field and the flow rates
inside the separation channel. It is known that separation performance is strongly dependent on the flow rate conditions and
feed flow concentration, however, to date, few studies have been conducted to investigate the effect non-specific crossover
has on separation. The aim of this work is to establish whether diffusive processes stemming from hydrodynamic effects contribute
in any way to the quality of separation. A silica sample of known granule size distribution was chosen for this study which
has environmental applications. |
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Keywords: | SPLITT cell separation Split-flow lateral transport thin fractionation Shear-induced diffusion Silica particles |
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