通过中空纤维膜逆流萃取,研究了伯胺N1923对Th4+和RE3+的萃取分离过程.测定了水相料液硫酸浓度、水相与油相流量对传质系数的影响,并对包头矿硫酸分解浸出液进行中空纤维膜萃取实验.结果表明,Th4+的传质系数受水相流量影响,与酸度及油相流量无关,总传质速率受水相临界层传质步骤控制.RE3+的传质系数不受水相流量影响,油相流量影响很小,但受硫酸浓度的影响,总传质速率受萃取反应速率控制.根据传质速率的不同,对包头矿硫酸浸出液进行萃取分离,在8 h内Th4+可基本萃取完全,而RE3+及Fe3+基本不被萃取,故可在密封条件下分离钍.
参考文献
| [1] | Li Deqian;Ji Enri;Gao Yuan.The Papers Collection of Rare Earth Chemistry[M].北京:科学出版社,1982 |
| [2] | Nancy A D Ella;Lise Dahurone E L Cussler .Liquid-liquid extractions with microporous hollow fibers[J].Journal of Membrane Science,1986,29:309. |
| [3] | Dai Yuyuan;Zu Senlin;Lou Yuan et al.Study on the extraction with immobilized interface[J].Journal of Chem Eng Chinese University,1987,2(01):57. |
| [4] | Chang H Yun;Ravi Prasad;Asim K Guha et al.Hollow fiber solvent extraction removal of toxic heavy metals from aqueous waste streams[J].Ind Eng Res,1993,23:1186. |
| [5] | Kubota F.;Nakashio F.;Hano T.;Goto M. .EXTRACTION KINETICS OF RARE EARTH METALS WITH 2-ETHYLHEXYL PHOSPHONIC ACID MONO-2-ETHYLHEXYL ESTER USING A HOLLOW FIBER MEMBRANE EXTRACTOR[J].Separation Science and Technology,1995(5):777-792. |
| [6] | David O Cooney;Chin-lem Jin .Solvent extraction of phenol from aqueous solution in a hollow fiber device[J].Chemical Engineering Communications,1985,33:173. |
| [7] | David O Coony;Marios G Poufos .Liquid-liquid extraction in a hollow fiber device[J].Chemical Engineering Communications,1987,61:159. |
| [8] | Kiani A;Sirkar R R .Solvent extracition with immobilized interface in a microporous hydrophobic membrane[J].Journal of Membrane Science,1984,24:125. |
| [9] | Chang H Yun;Ravi Prasad;Kamalesh K Sirkar .Membrane solvent extraction removal of priority organic pollutants from aqueous waste streams[J].Industrial and Engineering Chemistry Research,1992,31:1709. |
| [10] | Seibert A F;Py X;Mshewa M et al.Hydraulics and mass transfer efficiency of a commercial-scale membrane extractor[J].Separation Science and Technology,1993,28(1-3):343. |
| [11] | Frank G T;Sirkar K K .Alcohol production by yeast fermentation and membrane extraction[J].Biotechnology and Bioengineering,1985,15:621. |
| [12] | Frank G T;Sirkar K K .An integrated bioreactor-separator: In situ recovery of pementation products by a novel membrance-based dispersion-free solvent extraction technique[J].Biotechnology and Bioengineering,1986,17:303. |
| [13] | Prasad R;Sirkar K K .Hollow fiber extraction of pharmaceutical products: A case study[J].Journal of Membrane Science,1989,47:235. |
| [14] | Ding H B;Carr P W;Cussler E L .Racemic leucine separation by hollow-fiber extraction[J].AICHE Journal,1992,38(10):1493. |
| [15] | Prasad R;Sirkar K K .Hollow fiber solvent extraction: performances and designe[J].Journal of Membrane Science,1990,50:153. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%