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The Separation Properties of Magnesium and Lithium from Brine with high Mg2+/Li+ Ratio by DK Nanofiltration Membrane

Authors： JI Chao, ZHANG Jie, SUN Shuying, LI Ping, YU Jianguo

Units： State-Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, 200237, China

KeyWords：词： Brine； Separation of magnesium and lithium； Nanofiltration

ClassificationCode：O652.6；TQ028.8

year,volume(issue):pagination： 2014, 34(3):79-85

Abstract：

Nowadays, lithium extraction from salt lakes was paid more attentions because of low cost and rich resource. Nevertheless Mg/Li ratio in most Chinese sake lakes is high. It is difficult to recovery of lithium from the brine due to the close property of Mg2+ and Li+. In this work, nanofiltration was used to study the separation of magnesium and lithium in brine. The operation conditions, including operation time, operation pressure, solution temperature, pH value and Mg/Li ratio were investigated. The competition coefficient was adopted to describe the relationship of Mg2+ and Li+ rejections. Moreover, the impact of Na+, K+, and Ca2+ on the separation of Mg2+ and Li+ was studied. And the conclusion was reached that, Mg/Li ratio, operation pressure, as well as pH value had a great effect on Mg/Li separation. For the brine whose Mg/Li ratio was less than 45, it shew the great feasibility of Mg/Li separation by nanofiltration. In addition, the introduction of monovalent ions had much adverse effect on Mg2+/Li+ separation.

Funds：

国家863计划重点项目（2012AA061601）

AuthorIntro：

计超（1988-），男，上海市，硕士，从事膜分离技术及盐湖锂资源的提取和精制方面研究.*通讯联系人，；

Reference：

[1] Hykawy, J. Looking at lithium: discussing market demand for lithium in electronics[J]. Mater.World Ceram. Lithium, 2010, 18(5): 34~35.
[2] Kesler S E , Gruber P W, Medina P A, et al. Global lithium resources: Relative importance of pegmatite, brine and other deposits[J]. Ore Geology Reviews, 2012, 48: 55~69.
[3] 邓建绵, 刘金盾, 张浩勤, 等. 纳滤技术在工业废水处理中的应用研究[J]. 工业水处理, 2008, 28(4): 10~12.
[4] 高从楷, 俞三传, 张建飞, 等. 纳滤[J]. 膜科学与技术, 1999,19(2): 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] Yand Gang, Shi Hong, Liu Wenqiang, Xing Weihong and Xu Nanping. Investigation of Mg2+/Li+ Separation by Nanofiltration[J]. Chinese Journal of Chemical Engineering, 2011. 19(4): 586~591.
[7] Wen Xianming, Ma Peihua, Zhu Chaoliang, et al. Preliminare study on recovering lithium chloride from lithium~containing saters by nanofiltration[J]. Separation and Purification Technology, 2006, 49(3): 230~236.
[8] E. R. Nightingale Jr. Phenomenological Theory of Ion Solvation. Effective Radii of Hydrated Ions[J]. J. Phys. Chem., 1959, 63 (9), 1381~1387.
[9] 方建惠, 姜华, 刘继全, 等. 纳滤膜在海水淡化中的应用研究[J]. 膜科学与技术, 2006, 26(1): 50~54.
[10] Bargeman G, Vollenbroek J M, Straatsma J. Nanofiltration of multi-component feeds. Interactions between neutral and charged components and their effect on retention. Journal of Membrane Science, 2005, 247(1~2):11~20.
[11] Tsuru T, Urairi M, Nakao S and Kimura S. Reverse osmosis of single and mixed electrolytes with charged membranes: Experiment and analysis[J]. J Chem Eng Japan, 1991, 24(4): 518~524.
[12] Wang X L, Tsuru T, Nakao S, et al. Evaluation of pore structure and electrical properties of nanofiltration membranes[J]. J Chem Eng Japan, 1995, 28(2): 186~192.
[13] Van der Bruggen B, Vandecasteele C. Modelling of the retention of uncharged molecules with nanofiltration[J]. Water Research, 2002, 36(5): 1360~1368.
[14] Wang X L, Tsuru T, Nakao S, et al．The electrostatic and steric~hindrance model for the transport of charged solutes through nanofiltration membrane[J]. Journal of Membrane Science, 1997, 135(1): 19~32
[15] Hoffer E, Kedem O. Hyperdiltration in charged membranes: The fixed charged model[J]. Desalination, 1967, 2(1): 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, 23(1): 45~46.
[17] Qin JianJun, Maung Htun Oo, Lee Hsiaowan, et al. Effect of feed pH on permeate pH and ion rejection under acidic conditions in NF process[J]. Journal of Membrane Science, 2004, 232(1~2): 153~159.
[18] W. Byrne(Ed.). Reverse Osmosis[M]. Tall Oaks Publishing. USA, 1995.

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