Preparation of cellulose derived from corn stalk and its application for cadmium ion adsorption from aqueous solution

被引：79

作者：

Zheng, Liuchun ^{[2
]}

Zhu, Chaofei

Dang, Zhi ^{[1
,3
]}

Zhang, Hui ^{[4
]}

Yi, Xiaoyun

Liu, Congqiang ^{[5
]}

机构：

[1] S China Univ Technol, Coll Environm Sci & Engn, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Guangdong, Peoples R China

[2] S China Normal Univ, Sch Chem & Environm, Guangzhou 510006, Guangdong, Peoples R China

[3] S China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Peoples R China

[4] Guilin Univ Technol, Sch Environm Sci & Engn, Guilin 541004, Peoples R China

[5] Chinese Acad Sci, State Key Lab Environm Geochem, Inst Geochem, Guiyang 550002, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2012年 / 90卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Cellulose; Corn stalk; Isolation; Modification; Adsorption; WASTE-WATER; HEAVY-METAL; THERMAL CHARACTERIZATION; REMOVAL; EQUILIBRIUM; ADSORBENTS; ACRYLONITRILE; COPPER(II); CD(II); RISK;

D O I：

10.1016/j.carbpol.2012.06.035

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Cellulose was isolated from corn stalk and modified by graft copolymerization to produce an absorbent material (AGCS-cell), which was characterized by scanning electron microscope and energy disperse spectroscopy (SEM-EDS), X-ray diffraction (XRD) and solid-state CP/MAS C-13 NMR. The results showed that AGCS-cell had better adsorption potential for cadmium ion than unmodified cellulose because of the addition of functional groups (-CN and -OH groups) and the lower crystallinity. The Langmuir isotherms gave the best fit to the data and gave an adsorption capacity was 21.37 mg g(-1), which was close to unpurified cellulose (AGCS) and reflected the feasibility of using AGCS-cell as an adsorbent to remove cadmium ions. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1008 / 1015

页数：8

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