A Mannich base biosorbent derived from alkaline lignin for lead removal from aqueous solution

被引：70

作者：

Ge, Yuanyuan ^{[1
]}

Song, Quanpeng ^{[1
]}

Li, Zhili ^{[1
]}

机构：

[1] Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc In, Nanning 530004, Peoples R China

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2015年 / 23卷

基金：

中国国家自然科学基金;

关键词：

Lignin; Biosorbent; Amine; Heavy metals; Mannich reaction; HEAVY-METAL IONS; MESOPOROUS SILICA; KRAFT LIGNIN; AMINO-ACID; ADSORPTION; EQUILIBRIUM; CADMIUM; CD(II); CU(II); COPPER;

D O I：

10.1016/j.jiec.2014.08.021

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A Mannich base biosorbent (AML) was prepared by grafting alkaline lignin (AL) with methylamine and formaldehyde. The effects of dosages, reaction time, pH and temperature of reaction on the nitrogen content of AML were investigated. A maximum nitrogen content of the Mannich base could reach to 8.32%. It was characterized by scanning electron microscopy (SEM), element analysis, and gel permeation chromatography (GPC). Kineticadsorption suggested AML possessed fast adsorption for Pb2+. and followed a second-order model. Adsorption equilibrium results indicated AML had a maximum uptake of 60.5 mg/g for Pb2+ which was 4.2-fold higher than AL. The AML has good potential for cleanup of wastewater. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：228 / 234

页数：7

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