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利用文献报道的单盐溶液水的渗透系数,结合Pitzer方程,进行了Li2SO4-K2SO4-MgSO4-H2O体系的参数化工作,得到了273.15 K和298.15 K Li2SO4、K2SO4、MgSO4的单盐参数以及二离子和三离子相互作用参数。利用已获得的参数对Li2SO4-MgSO4-H2O体系、Li2SO4-K2SO4-H2O体系、K2SO4-MgSO4-H2O体系273.15 K的溶解度进行了预测,并与已有的实验数据进行了比较,获得了比较满意的结果。首次利用Pitzer模型对Li2SO4-K2SO4-MgSO4-H2O体系273.15 K的溶解度进行了预测,可靠的理论预测结果减少了繁重的实验测定工作。
The parameterization of Li2SO4-K2SO4-MgSO4-H2O system was carried out by using the single-salt solution water permeability coefficient reported in the literature, combined with the Pitzer equation. Single salt parameters of 273.15 K and 298.15 K Li2SO4, K2SO4 and MgSO4 were obtained, And three ion interaction parameters. Solubilities of Li2SO4-MgSO4-H2O system, Li2SO4-K2SO4-H2O system and K2SO4-MgSO4-H2O system of 273.15 K were predicted using the obtained parameters. Compared with the existing experimental data, the solubility of Li2SO4- result. For the first time, the Pitzer model was used to predict the solubility of 273.15 K in Li2SO4-K2SO4-MgSO4-H2O system. Reliable theoretical predictions reduced the cumbersome experimental determination.