Liquid-liquid extraction of copper(II), zinc(II), cadmium(II), and lead(II) from aqueous solution and sewage effluent using phenoxy-amino ligands

被引：5

作者：

Nyamato, George S. ^{[1
]}

Wambugu, Kelvin ^{[1
]}

Kiratu, John ^{[1
]}

Ojwach, Stephen O. ^{[2
]}

机构：

[1] Univ Embu, Dept Phys Sci, POB 6-60100, Embu, Kenya

[2] Univ KwaZulu Natal, Sch Chem & Phys, Scottsville, South Africa

来源：

WATER SCIENCE AND TECHNOLOGY | 2022年 / 85卷 / 10期

关键词：

heavy metals; liquid-liquid extraction; phenoxy-amino ligands; wastewater; HEAVY-METAL REMOVAL; BINDING-PROPERTIES; COORDINATION CHEMISTRY; DRINKING-WATER; MERCURY; COMPLEXES;

D O I：

10.2166/wst.2022.164

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The phenoxy-amino ligands 2-(((2-(diethylamino)ethyl)amino)methyl)phenol (L1) and 2-(((2-mercaptoethyl)amino)methyl)-phenol (L2) were studied as model chelating agents for liquid-liquid extraction of copper(II), zinc(II), cadmium(II) and lead(II) cations from water using dichloromethane-water biphasic system. The relative affinities of these chelating ligands for copper(II), zinc(II), cadmium(II) and lead(II) by liquid-liquid extraction were found to be in the order copper(II)> zinc(II)> cadmium(II)> lead(II). The ligands L1 and L2 showed binding efficiencies ranging from 78%-97% for copper(II), 75%-91% for zinc(II), 76%-92% for cadmium(II) and 59%-67% for lead(II). The extraction protocol was successfully applied to sewage effluent.

引用

页码：2993 / 3001

页数：9

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