TREATMENT OF WASTE SOLUTIONS BY USE OF ORGANICLIQUIDS PARTIALLY MISCIBLE WITH WATER.

使用与水部分混溶的有机液体处理废物溶液。

• 批准号: 61550462
• 负责人: OKADA Shigeru
• 金额: $ 1.15万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1986
• 资助国家: 日本
• 起止时间: 1986 至 1988
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61550462/
• 关键词: Treatment of Waste Solution; Water-Organic Liquid; Salting out Effect; Solvent Effect; Mutual Solubility; Two Liquids Separation; 温排水利用; 混合溶媒; 有機液体-水系; 2液分離; 晶析; 濃縮分離; 有機液体

SOLUBILITY OF SALTS CAN BE DECREASED IN AQUEOUS ORGANIC LIQUID MIXTURES COMPARED WITH WATER. AND ALSO, MUTUAL SOLUBILITY OF THE MIXTURES VARIES WITH TEMPERATURE OR WITH ADDITION OF SALT. UTILIZATION OF SOLUBILITY CHARACTERISTICS IN THE SALT-WATER-ORGANIC LIQUID SYSTEM TO THE TREATMENT OF WASTE SOLUTIONS WAS EXAMINED WITH A SERIES OF ORGANIC LIQUIDS WHICH ARE TEA(TRIETHYL AMINE), DIPA(DIISO-PROPYL AMINE), TBPO(TRYBUTYL PHOSPHIN OXIDE), TMP(TRIMETYL PHOSPHATE), TEP (TRYETHYL PHOSPHATE), TBP(TRIBUTHYL PHOSPHATE), EGBE(ETHYLENE GLYCOL BUTYL ETHER), DEGHE(DIETHYLENEGLYCOL HEXYL ETHER) AND DEGHE(DIETHYLENE GLYCOL HEXYL ETHER).MUTUAL SOLUBILITIES OF THE WATER-ORGANIC LIQUID SYSTEMS WERE DETERMINED IN THE TEMPERATURE RANGE OF 278K TO 333K. AQUEOUS SOLUTIONS OF TEA, DIPA, TBPO, EGBE AND/OR DEGHE HAVE THE LOWER CRITICAL SOLUTION TEMPERATURE RESPECTIVELY.SALT EFFECTS ON THE MUTUAL SOLUBILITY OF THE SOLVENT MIXTURE, AND SOLVENT EFFECTS ON SOLUBILITY OF SALTS WERE DISCUSSED. THE SOLUBILITY OF THE O … More RGANIC LIQUIDS TESTED IN THE AQUEOUS SULFATE SOLUTIONS CAN BE EXPRESSED BY THE SEMIEMPIRICAL SETCHENOV SALTING EQUATION, AND THE SALTING COEFFICIENT DEPENDING ON THE NATURE OF SALT AND TEMPERATURE WAS CORRELATED WITH GIBBS FREE ENERGY OF AQUO-CATION FORMATION. LARGE SALTING OUT EFFECTS WERE OBSERVED IN THE TERNARY SYSTEMS METAL SULFATE-WATER-ORGANIC LIQUID ; THE MISCIBILITY GAP INCREASES WITH INCREASE IN TEMPERATURE AND CONCENTRATION OF SALT. IN TWO-LIQUID REGION, SULFATES ARE CONCENTRATED INTO AQUEOUS PHASE AND ORGANIC RICH PHASES CONTAINE SMALL AMOUNTS OF SALT. WHILE IN HOMOGENEOUS SOLUTION REGION, SOLUBILITY OF THE SALTS DECREASES WITH INCREASE IN CONCENTRATION OF THE ORGANIC LIQUID. THUS, THE ORGANIC LIQUIDS TESTED WERE EFFECTIVE FOR CONCENTRATION OR SEPARATION OF THE SULFATES INTO THE AQUEOUS PHASE OR FROM THE AQUEOUS SOLUTION.RECOVERY OF THE ORGANIC LIQUID FROM AQUEOUS SOLUTION CAN BE DONE BY WARMING THE SOLUTION TO THE TEMPERATURE AROUND 333K, OR BY UTILIZING SALTING OUT EFFECT AND/OR EXTRACTION WITH TBP. Less

与水相比，盐在含水的有机液体混合物中的溶解度会降低。此外，混合物的互溶度随温度或盐的加入而变化。研究了TEA(三乙胺)、DIPA(二异丙基胺)、TBPO(三丁基氧化膦)、TMP(三甲基磷酸酯)、TEP(三丁基磷酸酯)、TBP(三丁基磷酸酯)、ENGBE(乙二醇丁基醚)、DEGHE(二乙醇丁基己基醚)和DEGHE(二乙二醇己基醚)等一系列有机液体在盐-水-有机液体体系中的溶解特性。在278~333K温度范围内测定了水-有机液体体系的MUTUAL溶解度。TEA、DIPA、TBPO、ENGBE和/或DEGHE的水溶液具有较低的临界溶解温度，讨论了SALT对混合溶剂互溶度的影响，以及溶剂对盐的溶解度的影响。O-…的溶解度在硫酸盐溶液中测试的更多的有机液体可用半经验的SetchEnov盐化方程来表示，盐化系数与盐的性质和温度有关，与水正离子形成的吉布斯自由能相关联。在金属硫酸盐-水-有机三元体系中观察到较大的盐析效应，其混溶间隙随温度和盐浓度的升高而增大。在双液相区，硫酸盐主要集中在水相和富含少量盐的有机相中。而在均相溶液区，盐的溶解度随有机液体浓度的增加而降低。因此，所测试的有机液体对于将硫酸盐浓缩或分离到水相中或从水溶液中分离是有效的。有机液体从水溶液中的恢复可以通过将溶液加热到333K左右，或利用盐析效应和/或用TBP萃取来完成。较少

项目成果

岡田茂、今村正樹、矢沢彬: 資源と素材.

Shigeru Okada、Masaki Imamura、Akira Yazawa：资源和材料。