System development for monitoring the production process of freeze-dried samples: A simple and low-cost approach

IF 1 4区 工程技术 Q4 CHEMISTRY, APPLIED
Vanessa Dal-Bó, Heitor Nogueira Altino, J. Freire
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引用次数: 0

Abstract

The data acquisition from the freeze-drying process is important for obtaining freeze-dried samples with the desired final moisture content under various operating conditions. The current study presents in extensive detail a simple and low-cost methodology for the implementation of a data acquisition system in a laboratory-scale freeze dryer. The results showed that the use of higher drying temperatures (40?C) increased the errors involved in the measurements of the mass of material; nevertheless, the application of correction blank curves statistically significantly reduced those errors. In general, the system developed provided precise and accurate measurements of the temporal changes in the sample mass and temperature, and chamber pressure variations, allowing monitoring of the production process of freeze-dried samples with low final moisture contents.
用于监控冻干样品生产过程的系统开发:一种简单而低成本的方法
从冻干过程中获取的数据对于在各种操作条件下获得具有所需最终水分含量的冻干样品是重要的。目前的研究提出了广泛的细节,一个简单的和低成本的方法,用于在实验室规模的冷冻干燥机的数据采集系统的实施。结果表明,使用较高的干燥温度(40℃)会增加测量物料质量的误差;然而,校正空白曲线的应用在统计学上显著降低了这些误差。总的来说,开发的系统提供了样品质量和温度的时间变化以及腔室压力变化的精确和准确的测量,允许监测具有低最终水分含量的冻干样品的生产过程。
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来源期刊
Chemical Industry & Chemical Engineering Quarterly
Chemical Industry & Chemical Engineering Quarterly CHEMISTRY, APPLIED-ENGINEERING, CHEMICAL
CiteScore
2.10
自引率
0.00%
发文量
24
审稿时长
3.3 months
期刊介绍: The Journal invites contributions to the following two main areas: • Applied Chemistry dealing with the application of basic chemical sciences to industry • Chemical Engineering dealing with the chemical and biochemical conversion of raw materials into different products as well as the design and operation of plants and equipment. The Journal welcomes contributions focused on: Chemical and Biochemical Engineering [...] Process Systems Engineering[...] Environmental Chemical and Process Engineering[...] Materials Synthesis and Processing[...] Food and Bioproducts Processing[...] Process Technology[...]
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