The Freezing Melting (F/M) is considered one of the most sustainable desalination techniques in terms of energy consumption compared with commercial desalination. However, it presents some problems, especially salt trapping in the ice. In this paper, an experimental analysis is carried out to achieve a better understanding of saline ions displacement observed during the freezing of saline water. Different sizes, freezing temperatures and, geometries are tested using the F/M progressive desalination. It is found that salt diffusion improves with increasing the container length. Moreover, for all container geometries, the saline ion diffusion direction is from the bottom to the top of the formed ice. Furthermore, at low freezing temperature (−8°C), it is possible to purify 78.8 % of the frozen water, obtaining an easy‐to‐separate brine.

中文翻译：

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用于海水淡化的盐水冷冻过程中盐分扩散的实验分析

与商业淡化相比，就能耗而言，冷冻融化（F / M）被认为是最可持续的淡化技术之一。然而，这带来了一些问题，特别是盐在冰中的捕集。在本文中，进行了一项实验分析，以更好地理解冷冻盐水过程中观察到的盐水离子位移。使用F / M渐进式淡化测试了不同的尺寸，冷冻温度和几何形状。已经发现，盐的扩散随着容器长度的增加而改善。而且，对于所有容器几何形状，盐水离子的扩散方向是从所形成的冰的底部到顶部。此外，在较低的冷冻温度（−8°C）下，有可能净化78.8％的冷冻水，从而获得易于分离的盐水。