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Description: In eastern Canada, cereal grains are often harvested at moisture contents above those at which they can be safely stored (without risk of spoilage), and therefore, it is necessary to dry them prior to storage. The optimum moisture content (m.c.) for harvesting with a minimum of seed loss is 18-20% wet basis (w.b.) for wheat, 15-20% for oats, and 25-32% for corn while the required moisture content for safe storage for a year is 13-14% for wheat, 14% for oats, and 13% for corn (Brookeret al. 1974). Bentonite is a widely distributed clay material which is used as a filler in welldrilling muds, a binder in foundry molds, a pelletizing agent in iron-ore concentrates, and in many other diverse applications (American Petroleum Institute 1951 Vagt 1976). The predominant mineral in bentonite is montmorillonite, a hydrated aluminum silicate with sodium and calcium as the common exchangeable cat ions. An important property of the clay is its ability to adsorb large quantities of water (or other polar materials) between the weakly bonded silicate sheets. Sodium bentonites can swell from 15 to 20 times their original dry volume (Department of Mines and Technical Surveys 1964). This study investigates the possibility of drying cereal grains in an intimate mixture of Wyoming bentonite (80-mesh size), a bentonite with sodium as the predominant exchangeable cation.

Keywords: drying of cereal grains with the desiccant bentonite
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Citation: Sturton, S. L., Bilanski, W. K. and D. R, Menzies 1981. DRYING OF CEREAL GRAINS WITH THE DESICCANT BENTONITE. Canadian Agricultural Engineering 23(2):101-104.
Volume: 23
Issue: 2
Pages 101 - 104
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Date: 1981
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Publication type: Journal
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Coverage: Canada
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