针对我国大部分盐湖卤水高镁锂比的资源结构特点,锂的提取困难问题,采用纳滤技术研究镁锂分离的效果,实验考察了操作条件的影响,包括操作时间、操作压力、进水温度、溶液pH值和镁锂比对分离的影响.引入镬锂竞争系数,得出镁锂截留率之间的关系.同时也研究了Na+、K+、Ca2+离子对镁锂分离效果的影响.结果表明,Mg/Li比、操作压力和pH值对Mg2+和Li+分离效果有较大的影响.对Mg与Li比小于45的卤水,纳滤膜对镁锂分离显示出较大的可行性.一价离子的引入对镁锂分离产生较为不利的影响.
参考文献
| [1] | Hykawy J .Looking at lithium:Discussing market demand for lithium in electronics[J].Mater World Ceram Lithium,2010,18(05):34-35. |
| [2] | Stephen E. Kesler;Paul W. Gruber;Pablo A. Medina.Global lithium resources: Relative importance of pegmatite, brine and other deposits[J].Ore Geology Reviews: Journal for Comprehensive Studies of Ore Genesis and Ore Exploration,2012:55-69. |
| [3] | 邓建绵,刘金盾,张浩勤,鲁智礼.纳滤技术在工业废水处理中的应用研究[J].工业水处理,2008(04):10-12. |
| [4] | 高从增;俞三传;张建飞 等.纳滤[J].膜科学与技术,1999,19(02):1-5. |
| [5] | 马培华;邓小川;温现民 .纳滤法从盐湖卤水中分离镁和富集锂的方法[P].中国,发明:03108088,2004-11-03. |
| [6] | YANG Gang,SHI Hong,LIU Wenqiang,XING Weihong,XU Nanping.Investigation of Mg^2＋/Li^＋ Separation by Nanofiltration[J].中国化学工程学报：英文版,2011(04):586-591. |
| [7] | Wen Xianming;Ma Peihua;Zhu Chaoliang et al.Preliminare study on recovering lithium chloride from lithium-containing saters by nanofiltration[J].Sep and Purif Technol,2006,49(03):230-236. |
| [8] | Nightingale Jr E R .Phenomenological theory of ion solvation:Effective radii of hydrated ions[J].Journal of Physical Chemistry,1959,63(09):1381-1387. |
| [9] | 方建慧,姜华,刘继全,沈霞,施利毅.纳滤膜在海水淡化中的应用研究[J].膜科学与技术,2006(01):50-54. |
| [10] | Bargeman G;Vollenbroek JM;Straatsma J;Schroen CGPH;Boom RM .Nanofiltration of multi-component feeds. Interactions between neutral and charged components and their effect on retention[J].Journal of Membrane Science,2005(1/2):11-20. |
| [11] | Tsuru T;Urairi M;Nakao S et al.Reverse osmosis of single and mixed electrolytes with charged membranes:Experiment and analysis[J].Journal of Chemical Engineering of Japan,1991,24(04):518-524. |
| [12] | Wang X L;Tsuru T;Nakao S et al.Evaluation of pore structure and electrical properties of nanofiltration membranes[J].Journal of Chemical Engineering of Japan,1995,28(02):186-192. |
| [13] | B. Van der Bruggen;C. Vandecasteele .Modelling of the retention of uncharged molecules with nanofiltration[J].Water research: A journal of the international water association,2002(5):1360-1368. |
| [14] | Wang XL.;Nakao S.;Kimura S.;Tsuru T. .THE ELECTROSTATIC AND STERIC-HINDRANCE MODEL FOR THE TRANSPORT OF CHARGED SOLUTES THROUGH NANOFILTRATION MEMBRANES[J].Journal of Membrane Science,1997(1):19-32. |
| [15] | Hoffer E;Kedem O .Hyperdiltration in charged mem-branes:The fixed charged model[J].DESALINATION,1967,2(01):25-39. |
| [16] | 朱安娜,祝万鹏,张玉春.纳滤过程的污染问题及纳滤膜性能的影响因素[J].膜科学与技术,2003(01):43-49. |
| [17] | Jian-Jun Qin;Maung Htun Oo;Hsiaowan Lee;Bruno Coniglio .Effect of feed pH on permeate pH and ion rejection under acidic conditions in NF process[J].Journal of Membrane Science,2004(1/2):153-159. |
| [18] | Byrne W.Reverse Osmosis[M].Tall Oaks Publishing,USA,1995 |
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%