Synthesis and characterization of multi-amino-functionalized cellulose for arsenic adsorption

被引：113

作者：

Yu, Xiaolin ^{[1
]}

Tong, Shengrui ^{[1
]}

Ge, Maofa ^{[1
]}

Wu, Lingyan ^{[1
]}

Zuo, Junchao ^{[1
]}

Cao, Changyan ^{[2
]}

Song, Weiguo ^{[2
]}

机构：

[1] Chinese Acad Sci, BNLMS, State Key Lab Struct Chem Unstable & Stable Speci, Inst Chem, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Lab Mol Nanostruct & Nanotechnol, Inst Chem, Beijing 100190, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2013年 / 92卷 / 01期

关键词：

Adsorbent; Adsorption; Arsenic; Isotherm model; TRANSFER RADICAL POLYMERIZATION; AQUEOUS-SOLUTION; REMOVAL; SORPTION; KINETICS; CU(II); WATER; EQUILIBRIUM; GROUNDWATER; ADSORBENTS;

D O I：

10.1016/j.carbpol.2012.09.050

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A multi-amino adsorbent for arsenic adsorption was reported in this paper. Glycidyl methacrylate (GMA) was first grafted onto the surface of cotton cellulose using ceric ammonium nitrate (CAN) as the initiator, and then the introduced epoxy groups reacted with tetraethylenepentamine (TEPA) to obtain a multi-amino adsorbent. The adsorbent was characterized by FTIR, elemental analysis, C-13 NMR and SEM. Then, the adsorption of arsenic for this adsorbent was investigated. The results showed that the GMA and TEPA were successfully grafted onto the surface of cellulose, and the modification improved the arsenic adsorption performances. Kinetic study suggested that the chemisorptions were the rate-limiting step. Among the three adsorption isotherm models used, Langmuir model fitted the experimental data best. The adsorption capacities of arsenic were less affected by coexisting ions. The adsorbent could be effectively regenerated for four cycles with 0.1 mol/L NaOH solution. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：380 / 387

页数：8

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