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为探讨盐效应对乙醇、丁醇稀溶液萃取的影响 ,根据盐效应理论 ,采用改善萃取环境的办法 ,以正辛醇为溶剂 ,实验测定其对乙醇、丁醇的萃取平衡分配比。实验表明 ,盐的加入可以使分配比明显提高 ,盐效应有利于乙醇、丁醇的萃取。添加低价盐 ,醇的分配比随盐浓度的增加呈直线上升趋势 ;添加高价盐 ,醇的分配比上升较快 ,但随盐浓度的进一步提高 ,其上升趋缓。描述盐效应影响的经验公式对实验数据关联良好
In order to investigate the effect of salt effect on the extraction of ethanol and butanol solution, according to salt effect theory, the extraction equilibrium was optimized by using n-octanol as solvent. Experiments show that the addition of salt can significantly improve the distribution ratio, salt effect is conducive to ethanol, butanol extraction. With the addition of low-salt, the distribution ratio of alcohol increased linearly with the increase of salt concentration. With the addition of high-salt, the distribution ratio of alcohol increased rapidly, but with the further increase of salt concentration, the increase slowed down. The empirical formula describing the effects of salt effects correlates well with the experimental data