The present work deals with the fractional crystallization of salts from seawater. New experimental data for the crystallization sequence and the liquid phase ion molalities for aqueous model solutions that contain the major seawater components are presented. For describing the studied electrolyte solutions, the Pitzer model was used with parameters adopted from the literature. This fluid property model was combined with an equilibrium model of the fractional crystallization. The comparison of the simulation results with experimental data from both the literature (for seawater) and this work (for model solutions) shows generally good agreement for seawater-like solutions, but also reveals limitations of the model.

目前的工作涉及从海水中盐分结晶。提供了包含主要海水成分的水性模型溶液的结晶顺序和液相离子摩尔浓度的新实验数据。为了描述所研究的电解质溶液，将Pitzer模型与文献中采用的参数一起使用。该流体性质模型与分步结晶的平衡模型结合。仿真结果与文献（针对海水）和这项工作（针对模型求解）的实验数据的比较表明，对于类似海水的解决方案，总体而言具有良好的一致性，但也揭示了模型的局限性。