已入深夜,您辛苦了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!祝你早点完成任务,早点休息,好梦!

Facile design of the nanofiltration membrane with Cu2+-incorporated aminated polyethylene substrate for highly selective magnesium/lithium separation

纳滤 锂(药物) 基质(水族馆) 化学工程 化学 选择性 聚乙烯 无机化学 有机化学 催化作用 生物化学 医学 海洋学 地质学 工程类 内分泌学
作者
Hui Wen,Nuanyuan Xu,Pengjia Dou,Changkun Liu
出处
期刊:Journal of Membrane Science [Elsevier BV]
卷期号:704: 122820-122820 被引量:8
标识
DOI:10.1016/j.memsci.2024.122820
摘要

Efficient separation of magnesium and lithium ions (Mg2+/Li+) from high Mg2+/Li+ ratio salt-lake brines using nanofiltration (NF) technology is crucial for stabilizing lithium resources in light of the increasing demand for lithium-based products. Although positively charged NF membranes show promise in selectively separating Mg2+ and Li+ ions, the issues of inefficiency and undesirable trade-offs in perm-selectivity remain pressing. In this study, we presented a breakthrough in creating a highly permeable NF membrane tailored for selective Mg2+/Li+ separation using the cost-effective polyethylene (PE) as the substrate for the preparation of the NF supporting layer. Employing a facile and low-cost Cu2+-incorporated amination process, the hydrophilization of PE substrate was accomplished. This innovative Cu2+-incorporated amination technique not only facilitated rapid hydrophilization but also established a positively charged PE surface while simultaneously regulating the formation of a thinner and loose polyethyleneimine (PEI)-based polyamide (PA) skin layer (∼26 nm) through the coordination bonding between the Cu2+ and amine groups. Consequently, the resultant NF membrane achieved simultaneous enhancements in permeability (∼16 L m−2 h−1 bar−1) and selectivity for Li+/Mg2+ (33) during the nanofiltration of the simulated brine, effectively reducing high Mg2+/Li+ ratios in the feed close to 1 in the permeate, and making it suitable for the subsequent precipitation to produce Li2CO3. Furthermore, this membrane demonstrated remarkable long-term stability, with stable NF operation continuously for over 7 days, owing to its robust Cu2+-induced aminated PE supporting layer and PEI-based PA skin layer. Our work underscores the simplicity and cost-effectiveness of the Cu2+-incorporated amination process in achieving superior PE-based NF membranes, specifically targeting lithium extraction from salt-lake brines.
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
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

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
刚刚
烟花应助Tianji采纳,获得10
1秒前
爆米花应助发粪涂墙采纳,获得10
2秒前
儒雅致远发布了新的文献求助10
2秒前
3秒前
4秒前
DT发布了新的文献求助10
6秒前
水之冬发布了新的文献求助10
8秒前
灰原哀发布了新的文献求助10
9秒前
9秒前
12秒前
0000完成签到 ,获得积分10
13秒前
Linbo发布了新的文献求助10
14秒前
Tianji完成签到,获得积分20
15秒前
发粪涂墙发布了新的文献求助10
16秒前
keplek完成签到 ,获得积分10
18秒前
19秒前
阿烨完成签到,获得积分10
20秒前
一只半夏完成签到,获得积分10
20秒前
22秒前
思源应助Nowind采纳,获得10
26秒前
YY完成签到,获得积分20
27秒前
FIB菜狗发布了新的文献求助10
29秒前
chen完成签到,获得积分10
30秒前
WuYiHHH完成签到,获得积分10
30秒前
32秒前
Ava应助WuYiHHH采纳,获得10
34秒前
桀桀桀发布了新的文献求助10
34秒前
37秒前
FIB菜狗完成签到,获得积分10
38秒前
发粪涂墙完成签到,获得积分10
39秒前
39秒前
我好想睡完成签到,获得积分10
39秒前
科目三应助文茵采纳,获得10
43秒前
桀桀桀发布了新的文献求助10
45秒前
灰原哀完成签到,获得积分10
47秒前
48秒前
48秒前
华仔应助科研通管家采纳,获得10
48秒前
Ava应助科研通管家采纳,获得10
48秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
Aktuelle Entwicklungen in der linguistischen Forschung 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989868
求助须知:如何正确求助?哪些是违规求助? 3531994
关于积分的说明 11255752
捐赠科研通 3270793
什么是DOI,文献DOI怎么找? 1805053
邀请新用户注册赠送积分活动 882215
科研通“疑难数据库(出版商)”最低求助积分说明 809208