Salt Effect Model for Aqueous Solubility of TBP in a 5 to 100% TBP/n-Dodecane-Nitric Acid-Water Biphasic System at 298.2 K
Salt Effect Model for Aqueous Solubility of TBP in a 5 to 100% TBP/n-Dodecane-Nitric Acid-Water Biphasic System at 298.2 K
复制标题
盐%20Effect%20Model%20for%20Aqueous%20Solubility%20of%20TBP%20in%20a%205%20to%20100%%20TBP/n-十二烷-硝酸%20Acid-Water%20Biphasic%20System%20at%20298.2%20K
DOI：
10.13182/nt00-a3062
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
S. Koganti
中科院分区：
文献类型：
--
作者：
Shekhar Kumar*;S. Koganti
摘要非电解质在电解质水溶液中的溶解度传统上是用Setschenow盐效应方程来模拟的。磷酸三丁酯（TBP）在Purex工艺操作条件下的水溶性是安全考虑的重要参数。文献中已经报道了在有限条件下使用Setschenow方程计算TBP的水溶解度。然而，没有通用模型可用于解释稀释剂的存在和多组分电解质溶液的情况，其中只有一些电解质被TBP溶剂化和提取。提出了一个扩展的盐效应模型，用于预测298.2K时TBP在5 ~ 100%TBP/正十二烷-硝酸-水两相体系中的溶解度。TBP溶解度的文献数据与酸水溶液浓度、溶剂中的稀释剂浓度和电解质溶质的相互作用参数（TBP提取或未提取）相关。
Abstract The solubilities of nonelectrolytes in aqueous electrolyte solutions have traditionally been modeled by using the Setschenow equation for salt effect. The aqueous solubility of tri-n-butyl phosphate (TBP) during operating conditions of the Purex process is an important parameter for safety considerations. Use of the Setschenow equation for aqueous solubility of TBP under limited conditions has been reported in the literature. However, there is no general model available to account for the presence of the diluent and for the case of multicomponent electrolyte solutions in which only some electrolytes are solvated and extracted by TBP. An extended salt effect model is proposed for predicting the aqueous solubility of TBP in a 5 to 100% TBP/n-dodecane-nitric acid-water biphasic system at 298.2 K. The literature data on TBP solubility were correlated to aqueous acid concentration, diluent concentration in the solvents, and an interaction parameter for electrolytic solutes (extracted or not extracted by TBP).