Stable ionic liquid-based polymer inclusion membranes for lithium and magnesium separation

三醋酸纤维素 C4毫米 离子液体 化学 萃取(化学) 核化学 无机化学 色谱法 有机化学 生物化学 催化作用
作者
Li Xu,Xianjie Zeng,Qing He,Tao Deng,Chengyi Zhang,Wen Zhang
出处
期刊:Separation and Purification Technology [Elsevier]
卷期号:288: 120626-120626 被引量:31
标识
DOI:10.1016/j.seppur.2022.120626
摘要

The separation of lithium and magnesium is crucial for the exploitation of lithium resources with a high concentration of magnesium ions (Mg2+). In this study, polymer inclusion membranes (PIMs) based on the stable ionic liquid (IL) extractant system were developed for separating lithium ions (Li+) from Mg2+ in aqueous solutions. The mixture of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C4mim][NTf2]) and tributylphosphate (TBP) was used as the carrier to transfer Li+, and the cellulose triacetate (CTA) polymer was chosen as the matrix due to its high compatibility with [C4mim][NTf2] via hydrogen bond. The TBP was kept in the membrane matrix without obvious leakage in the membrane extraction process, and the lithium selectivity and extraction percentage of the membranes decrease by less than 10% after five continuous extraction operation cycles. In the transport experiment using the feed containing 7.2 mmol/L Li+ and 2.06 mmol/L Mg2+, the PIM with 40 wt% TBP-[C4mim][NTf2] exhibits the separation factor of 2.24 for Li+/Mg2+ and an initial flux of 0.89 × 10−6 mol m−2 s−1 for Li+, much higher than the results of the pure CTA membranes, indicating that TBP-[C4mim][NTf2] system is efficient for Li+ extraction in PIM membrane. Besides, the PIMs we prepared were applied to extract Li+ from simulative salt-lake brines with a high Li+/Mg2+ selectivity of 23.87. The IL-based PIMs provide a possible membrane technology to extract Li+ from salt-lake brines with high stability, low energy consumption and environment-friendly.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
飘逸踏歌完成签到 ,获得积分0
刚刚
充电宝应助落寞丹萱采纳,获得10
刚刚
yanshapo发布了新的文献求助10
1秒前
脑洞疼应助发疯的游子采纳,获得10
3秒前
888发布了新的文献求助20
3秒前
SYLH完成签到,获得积分0
4秒前
lrj完成签到,获得积分20
4秒前
海带完成签到,获得积分10
4秒前
天天快乐应助笨笨的晓夏采纳,获得10
5秒前
高大小懒猪完成签到,获得积分10
6秒前
9秒前
大气的火龙果完成签到 ,获得积分10
9秒前
Charles完成签到,获得积分10
9秒前
薛洁洁的小糖应助888采纳,获得50
9秒前
紫色水晶之恋完成签到 ,获得积分10
11秒前
yanshapo完成签到,获得积分10
14秒前
16秒前
山海发布了新的文献求助10
16秒前
大海的DOI完成签到,获得积分10
17秒前
17秒前
火星上白羊完成签到 ,获得积分10
22秒前
小蘑菇应助科研通管家采纳,获得10
22秒前
研友_VZG7GZ应助科研通管家采纳,获得10
22秒前
梁三柏应助科研通管家采纳,获得20
22秒前
田様应助科研通管家采纳,获得10
22秒前
22秒前
桐桐应助科研通管家采纳,获得10
22秒前
汉堡包应助科研通管家采纳,获得10
22秒前
赤木完成签到 ,获得积分10
23秒前
海带发布了新的文献求助10
24秒前
女神金完成签到,获得积分10
25秒前
27秒前
山海完成签到,获得积分10
28秒前
研友_VZG7GZ应助parpate采纳,获得10
30秒前
Frost完成签到,获得积分10
31秒前
escapeace发布了新的文献求助30
31秒前
31秒前
39秒前
39秒前
parpate发布了新的文献求助10
42秒前
高分求助中
Continuum Thermodynamics and Material Modelling 3000
Production Logging: Theoretical and Interpretive Elements 2700
Les Mantodea de Guyane Insecta, Polyneoptera 1000
Structural Load Modelling and Combination for Performance and Safety Evaluation 1000
Conference Record, IAS Annual Meeting 1977 820
England and the Discovery of America, 1481-1620 600
電気学会論文誌D(産業応用部門誌), 141 巻, 11 号 510
热门求助领域 (近24小时)
化学 材料科学 生物 医学 工程类 有机化学 生物化学 物理 纳米技术 计算机科学 内科学 化学工程 复合材料 基因 遗传学 物理化学 催化作用 量子力学 光电子学 冶金
热门帖子
关注 科研通微信公众号,转发送积分 3572296
求助须知:如何正确求助?哪些是违规求助? 3142501
关于积分的说明 9448015
捐赠科研通 2843973
什么是DOI,文献DOI怎么找? 1563103
邀请新用户注册赠送积分活动 731630
科研通“疑难数据库(出版商)”最低求助积分说明 718640