排序方式: 共有8条查询结果,搜索用时 0 毫秒
1
1.
2.
3.
4.
5.
Predispersed solvent extraction (PDSE) is a new method for separating solutes from aqueous solution by solvent extraction and one which has shown promise for extraction from extremely dilute solution very efficient and very quick. The use of colloidal liquid aphrons in predispersed solvent extraction may ameliorate the problems such as emulsion formation, reduction of interracial mass transfer and low interfacial mass transfer areas in solvent extraction process. In present paper, colloidal liquid aphrons are successfully generated using kerosene as a solvent,tributyl phosphate(TBP) as an extractant, sodium dodecyl benzene sulphate(SDBS) as surfactant in aqueous phase and Tween-80 in oil phase. Extraction of phenol from dilute solution was studied by using colloidal liquid aphrons and colloidal gas aphrons in a semi-batch extraction column. It has been found that the PDSE process is more suitable for extraction of dilute solutions. It has also been discovered that the PDSE process has a great advantage over traditional single-stage extraction process. 相似文献
6.
选择草酸稀溶液为萃取对象 ,采用三辛胺 (TOA)为络合剂 ,正辛醇为稀释剂 ,开展了TOA萃取草酸的机理研究 .以红外谱图为分析手段 ,通过测定络合剂及被萃溶质的浓度对萃合物组成的影响 ,得到其萃合物以 1∶1和 1∶2 (酸 :碱 )两种形式存在于有机相中 ;并通过萃取平衡实验 ,获得了TOA萃取草酸的平衡特性 ,进一步验证了萃合物组成 .以此为基础建立了草酸与TOA两种萃合比情况下的数学模型 ,拟合求得了K11及K12 ,其中 1∶2萃合物的化学萃取平衡常数远远小于 1∶1的相应值 相似文献
7.
用NRTL方程计算芳烃抽提体系的液-液平衡 总被引:4,自引:0,他引:4
用NRTL方程在IMS-8000微型电子计算机上对芳烃抽提体系的液-液平衡进行了计算,并用正庚烷-举-环丁砜、正庚烷-甲苯-环丁砜体系考察了计算模型的适应性,计算结果与实验结果基本吻合,该计算方法可用于芳烃抽提工艺过程的设计和分析。 相似文献
8.
基于可逆络合反应的萃取技术:—极性有机物稀溶液的分离 总被引:57,自引:0,他引:57
本文介绍了基于可逆络合反应分离极性有机稀溶液的萃取技术,分析了这类过程的特点,并结合典型体系概述了这种技术的研究现状。 相似文献
1