Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 451975
Title High throughput particle separation with a mirrored deterministic ratchet design
Author(s) Lubbersen, Y.S.; Boom, R.M.; Schutyser, M.A.I.
Source Chemical Engineering and Processing 77 (2014). - ISSN 0255-2701 - p. 42 - 49.
Department(s) Food Process Engineering
Publication type Refereed Article in a scientific journal
Publication year 2014
Keyword(s) vortex membrane microfiltration - lateral displacement - fractionation - arrays
Abstract Deterministic ratchets, also called lateral displacement arrays, consist of periodic arrays of obstacles,spaced such that suspended particles having a minimum size are displaced. They have potential for sus-pension separation and fractionation. We report on the development of designs with obstacle arraysmirrored along the center plane providing more efficient displacement compared to non-mirroreddesigns. Depending on the application (e.g. concentration or cleaning) the design can be oriented tothe center or to the sides. Highest recovery of incoming particles was found 88% in the center orienta-tion, while the strongest depletions were achieved with the side orientation. Halving the length of thearray did not always yield similar separation to the conventional design, especially at higher concentra-tions. This implies that particle displacement was not pure deterministic, but influenced by stochasticparticle–particle interactions. Fractionation experiments demonstrated high recoveries of large particles,which were not much influenced by presence of small particles.
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