用基色石作为固体干燥剂吸附干燥小麦种子

E. Fomenko, N. Anshits, Vasily F. Shabanov, A. Anshits
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引用次数: 0

摘要

小麦种子在贮藏前必须使用适当的脱水工艺降低其水分含量 (MC)。干燥剂干燥法是一种很有前途的传统干燥法替代方法,因为它在提高种子质量的同时还能提供整体能效。本研究探讨了使用粒状铁石棉 MgSO4-H2O 作为固体干燥剂对小麦种子进行吸附干燥的方法。使用 SEM-EDS、XRD、DSC-TG 和粒度分析对干燥剂进行了表征。在均匀搅拌和温度受控的条件下,将不同质量比的小麦种子与铁石棉直接混合进行干燥。在干燥剂与麦粒的比例为 1:1 时,需要 240 分钟的干燥时间才能将小麦的初始 MC 从 21.5% 降低到 15.1%。360 分钟后,最终的 MC 值为 14.4%。吸附干燥后的发芽能和种子容量分别为 91±1% 和 97±2%。由于奇石的可用水容量,无需中间再生干燥剂即可干燥多批种子。这项研究有助于为各种农产品开发低成本、非热能和可持续的干燥技术。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sorption Drying of Wheat Seeds Using Kieserite as a Solid Desiccant
The moisture content (MC) of wheat seeds must be reduced before storage using appropriate dehydration processes. Desiccant drying is a promising alternative to conventional drying methods because it improves seed quality while providing overall energy efficiency. This study explores the sorption drying of wheat seeds using granulated kieserite MgSO4·H2O as a solid desiccant, which has a high water capacity and is regenerated at low temperatures <100 °C. Desiccant characterization was conducted using SEM-EDS, XRD, DSC-TG, and particle size analysis. Wheat seeds mixed directly with kieserite in various mass ratios were dried under uniform stirring and controlled temperature conditions. A 240-minute drying time was required to reduce the initial MC of wheat from 21.5% to 15.1% at a desiccant-to-grain ratio of 1:1. After 360 min, a final MC of 14.4% was achieved. The germination energy and seed capacity after sorption drying were 91 ± 1% and 97 ± 2%, respectively. Due to the available water capacity of kieserite, several batches of seeds can be dried without intermediate desiccant regeneration. This study is useful for developing low-cost, non-thermal, and sustainable drying technology for various agricultural products.
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