In this study, the impact of chloride content of the seawater on the solvent extraction equilibrium of copper using LIX 984 N was investigated. This effect was studied considering the nonideality of aqueous and organic phases. The presence of chloride ion was shown to increase the extraction tendency toward copper extraction, considering the changes that occur in the ratio of the activity of the dominant copper species to the hydrogen ion (H⁺). This phenomenon was further confirmed by calculating the equilibrium constant of the copper solvent extraction reaction in presence and absence of the chloride ion. The occurrence of the chloride ion resulted in involvement and dimerization of more organic molecules in the transfer of copper to the organic phase. As a result, a heterogeneous model incorporating the nonideality of the organic and aqueous phases for the solvent extraction of copper was developed and validated by experimental data.

在这项研究中，研究了海水中氯化物含量对使用 LIX 984 N 萃取铜的溶剂萃取平衡的影响。考虑到水相和有机相的非理想性，研究了这种效应。考虑到主要铜物种的活性与氢离子 (H ⁺）。通过计算存在和不存在氯离子时铜溶剂萃取反应的平衡常数进一步证实了这一现象。氯离子的出现导致更多有机分子参与和二聚化铜向有机相的转移。因此，开发了一种非理想模型，该模型结合了有机相和水相的非理想性，用于铜的溶剂萃取，并通过实验数据进行了验证。