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

与水相比，盐在含水有机液体混合物中的溶解度会降低。而且，混合物的相互溶解度随温度或盐的加入而变化。采用tea（三乙基胺）、dipa（二异丙基胺）、tbpo （trybutyl phosphin oxide）、tmp （trimetyl phosphate）、tep （triyethyl phosphate）、tbp （trithylphosphate）、egbe（乙二醇丁基醚）、deghe（二乙基乙二醇己基醚）和deghe（二乙二醇己基醚）等有机液体，考察了盐-水-有机液体体系中溶解度特性在废水处理中的应用。测定了水-有机液体体系在278k ~ 333k温度范围内的相互溶解度。茶水溶液的临界溶解温度较低，茶水溶液的临界溶解温度较低，茶水溶液的临界溶解温度较低。讨论了盐对溶剂混合物相互溶解度的影响，以及溶剂对盐溶解度的影响。有机液体在硫酸盐水溶液中的溶解度可用半经验塞切诺夫盐化方程表示，盐化系数随盐的性质和温度的变化与水基阳离子形成的吉布斯自由能相关。在金属硫酸盐-水-有机液体三元体系中观察到较大的盐析效应；随着盐的温度和浓度的增加，混相间隙增大。在双液区，硫酸盐被浓缩成水相，富有机相含有少量盐。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或从水溶液中分离是有效的。从水溶液中回收有机液体可以通过将溶液加热到333k左右的温度，或利用盐析效果和/或用tbp萃取来完成。少

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