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在水中的Cd²⁺和Pb²⁺的有效提取性能和机制,通过新型二离子离子液体

Tangzheng Lu¹, Dan Li², Jiayi Feng¹

¹School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.

Journal of environmental management

|December 18, 2023

概括

新型疏水性二离子液 (DILs) 有效地从水中提取和等重金属. 这些DIL显示出高的提取率,卓越的效率和可重复使用性,为废水处理提供了有前途的解决方案.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
绿色化学绿色化学

背景情况:

水溶液中的重金属污染对环境和健康构成重大风险.
有效和可重复使用的重金属去除方法对于可持续的废水处理至关重要.

研究的目的:

合成和表征新的疏水性滴定离子离子液体 (DILs).
评估这些DIL在从水溶液中提取重金属,特别是Cd2+和Pb2+中的性能.
研究合成的DILs的提取机制和可重复使用性.

主要方法:

合成和物理化学表征十种新的疏水性滴定性离子液体 (DILs).
使用 TOC 分析评估 DIL 的泄漏行为.
重金属提取实验,使用不同的溶液体积和恒定的相位比.
通过使用酸的反取实验进行可重复使用性测试.
使用FTIR分析和量子化学计算阐明机制.

主要成果:

对Cd2+ (高达0.45 mg·(g·min) -1和Pb2+ (高达0.53 mg·(g·min) -1的高提取率得到了实现.
提取效率高达Cd2+的95.48%,Pb2+的98.46%,即使废水量增加了20倍.
合成的DIL显示出出色的可重复使用性.
FTIR和量子化学计算表明,DIL离子中的S和O原子通过物理和准化学力量与Cd2+强烈相互作用.

结论:

这种新型的疏水性二离子液体有效地从水溶液中有效地去除重金属.
这些DIL表现出高提取性能,良好的可重复使用性,以及与重金属强烈的相互作用机制.
这些发现表明这些DIL在废水处理和环境修复方面的潜在应用.

关键词:

Cd(2+) 的时间.滴定性离子液体的离子液体重金属的提取重金属的提取.Pb ((2+) 是一个值.可重复使用性可重复使用性

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