EDTA-Like Chelating Cellulose for Adsorption of Cadmium and Lead Ions

被引：0

作者：

Shen H. ^{[1
]}

Zhang W. ^{[1
]}

Yang L. ^{[2
]}

Ding B. ^{[2
]}

机构：

[1] College of Science, Shenyang University of Chemical Technology, Shenyang

[2] College of Petrochemical Engineering, Liaoning Petrochemical University, Fushun

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2024年 / 40卷 / 03期

关键词：

adsorption; cadmium; chelating cellulose; lead;

D O I：

10.16865/j.cnki.1000-7555.2024.0051

中图分类号：

学科分类号：

摘要：

To improve the adsorptive performances of cellulose for heavy metals, in this work, microcrystalline cellulose was chemically oxidized to dialdehyde cellulose by sodium metaperiodate. Chelating cellulose functionalized with multidentate N, O-donor atoms (EDTA- CL) was prepared through Schiff base reaction between ethylenediamine and dialdehyde cellulose, and a substitution reaction between bromoacetic acid and amino groups derived from ethylenediamine, characterized to test the morphology and structure, and tested the adsorptive performances of heavy metals from aqueous solution. The optimal experimental conditions of the Cd2+ and Pb2+ adsorption by EDTA-CL (optimal pH in the range of 4.5~6 and rapid uptakes within 20 min) are found. The adsorptive amounts of Cd2 + and Pb2 + by EDTA-CL at 30 ℃ are found to be 236.1 mg/g and 382.6 mg/g, respectively, suggesting the enhancement of adsorptive amounts of EDTA-CL for Cd2+ and Pb2+ due to the grating of multidentate N, O-donor atoms on the cellulose skeleton. The adsorption of EDTA-CL for Cd2+ and Pb2+ follows the Langmuir and pseudo second-order models. EDTA-CL can be regenerated and reusable. © 2024 Sichuan University. All rights reserved.

引用

页码：110 / 117

页数：7

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