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Comparison of drying corn using sodium and calcium bentonite
Authors: Watts, K.C., Bilanski, W.K. And D.R. Menzies
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Download file: https://library.csbe-scgab.ca/docs/journal/28/28_1_35_ocr.pdf
Published in: CBE Journal » CBE Journal Volume 28 (1986)
Download RAW file: https://library.csbe-scgab.ca/docs/journal/28/28_1_35_raw.pdf
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Description: Desiccant drying of grain has been studied by several workers in the past due to its many advantages. Danziger el al. (1972) and Tomlinson and Miller (1981) have used expensive but effective silicagel to dry agricultural materials. Bern et al. (1981) used oven-dried corn as the dessicant. Sturton et al. (1981) and Graham et al. (1983) have investigated the use of bentonites in the drying of grain. In all desiccant drying using clay, the wet grain and dry clay are intimately mixed in a sealed container at ambient temperature. The grain rapidly gives up its moisture to the surrounding clay with little or no temperature rise, as the heat of hydration is negligible. This process differs from batch-in-bin drying which causes overheating of some grain as the drying front moves upward from the hot air inlet. When using desiccants, the drying occurs uniformly throughout the bin no regions in the grain remain wet for extended periods. The clay can be dried using low-cost solar energy during periods of sunshine in the spring and summer, thereby storing the energy in a readily accessible form for use when needed. Bentonites have one advantage not shared by the other desiccants: they have been shown by workers at the University of Guelph to reduce insect infestations in grain with which they are combined, probably because of the abrasive action of the clay on the insect as it moves through the mixture.
Keywords: comparison of drying corn using sodium and calcium bentonite
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Citation: Watts, K.C., Bilanski, W.K. and D.R. Menzies 1986. COMPARISON OF DRYING CORN USING SODIUM AND CALCIUM BENTONITE. Canadian Agricultural Engineering 28(1):35-42.
Volume: 28
Issue: 1
Pages 35 - 42
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Date: 1986
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Coverage: Canada
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DOI:
Description: Desiccant drying of grain has been studied by several workers in the past due to its many advantages. Danziger el al. (1972) and Tomlinson and Miller (1981) have used expensive but effective silicagel to dry agricultural materials. Bern et al. (1981) used oven-dried corn as the dessicant. Sturton et al. (1981) and Graham et al. (1983) have investigated the use of bentonites in the drying of grain. In all desiccant drying using clay, the wet grain and dry clay are intimately mixed in a sealed container at ambient temperature. The grain rapidly gives up its moisture to the surrounding clay with little or no temperature rise, as the heat of hydration is negligible. This process differs from batch-in-bin drying which causes overheating of some grain as the drying front moves upward from the hot air inlet. When using desiccants, the drying occurs uniformly throughout the bin no regions in the grain remain wet for extended periods. The clay can be dried using low-cost solar energy during periods of sunshine in the spring and summer, thereby storing the energy in a readily accessible form for use when needed. Bentonites have one advantage not shared by the other desiccants: they have been shown by workers at the University of Guelph to reduce insect infestations in grain with which they are combined, probably because of the abrasive action of the clay on the insect as it moves through the mixture.
Keywords: comparison of drying corn using sodium and calcium bentonite
Résumé:
Mots-clés:
Citation: Watts, K.C., Bilanski, W.K. and D.R. Menzies 1986. COMPARISON OF DRYING CORN USING SODIUM AND CALCIUM BENTONITE. Canadian Agricultural Engineering 28(1):35-42.
Volume: 28
Issue: 1
Pages 35 - 42
Contributor:
Date: 1986
Technical field:
Conference name:
Session name:
Other information:
Type:
Format:
Publication type:
Source:
Relation:
Coverage: Canada
Language 1:
Language 2:
Rights:
Notes:
Other files:
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