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 491657
Title Charging and separation behavior of gluten–starch mixtures assessed with a custom-built electrostatic separator
Author(s) Wang, J.; Wit, M. de; Boom, R.M.; Schutyser, M.A.I.
Source Separation and Purification Technology 152 (2015). - ISSN 1383-5866 - p. 164 - 171.
Department(s) Food Process Engineering
Publication type Refereed Article in a scientific journal
Publication year 2015
Abstract Electrostatic separation is a novel and sustainable process for dry separation of food ingredients. To establish guidelines for electrostatic separation, well-defined charging and separation experiments of model mixtures prepared from wheat gluten and starch were carried out. For this a custom-built bench-scale electrostatic separator was developed. Charging behavior of mixtures improved with decreasing particle concentration and increasing gas flow rate, which was similar compared to charging behavior of single materials. However, the charge of mixtures was not simply the sum of the charge of single materials because particle–particle interactions also largely influence the charging. Separation efficiencies for mixtures were found lower than could be expected on the basis of behavior of single materials in the equipment. This was attributed to formation of agglomerates by particles having opposite charge, which was further confirmed by the observation that dispersibility of the mixtures was poorer than for the single materials. Agglomeration of particles during electrostatic separation can be minimized by using high gas flow velocity, low feed dosing and higher field strength.
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