Effect of crystal orientation on freeze concentration of solutions
Effect of crystal orientation on freeze concentration of solutions
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DOI：
10.1016/j.ijrefrig.2008.06.001
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发表时间：
2009-03-01
期刊：
影响因子：
--
通讯作者：
Saito, Akio
中科院分区：
文献类型：
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作者：
Okawa, Seiji;Ito, Tetsuya;Saito, Akio
冷冻浓缩是将溶液制成纯冰浓缩溶液的方法之一。目前对冰的研究主要集中在凝结率方面，对冰中凝结物浓度的研究还很有限。然而，从废水中去除杂质的质量改进是一个非常重要的任务。本研究针对不同初始形态的冰，研究其对冷冻浓缩的影响。结果表明，冰中溶质浓度从大到小依次为多晶冰、a轴方向生长的单晶冰和c轴方向生长的单晶冰。据澄清，在冰中捕获的溶质和在母液中的溶质之间的浓度比从1/10变化到1/250，这取决于冰的晶体取向。(C)2008 Elsevier Ltd和IIR。All rights reserved.
Freeze concentration is one of the methods to concentrate solution by making pure ice in the solution. In general, the ratio of condensation is focused on, and so the research on the concentration captured in ice is very limited. However, quality improvement of eliminating impurities from wastewater is a very important task. In this study, the difference of initial morphology of ice was focused on and the influence on the freeze concentration was studied. It was found that the concentration of solute captured in ice was in the following order, from bigger value, multi-crystal ice, a single crystal ice with growth direction in a-axis and a single crystal ice with growth direction in c-axis. It was clarified that the ratio of concentration between the solute captured in ice and the solute in the mother solution varied from 1/10 to 1/250, depending on the crystal orientation of the ice. (C) 2008 Elsevier Ltd and IIR. All rights reserved.