壳聚糖的交联改性及其吸附铜和铅离子的研究

孙艳芳; 刘芸

doi:10.7652/xjtuxb201311022

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壳聚糖的交联改性及其吸附铜和铅离子的研究

更新时间：2025-07-09

- 壳聚糖的交联改性及其吸附铜和铅离子的研究
- Adsorption of Pb(II)and Cu(II)Ions by Cross-Linked Chitosan Beads
- 西安交通大学学报 2013年47卷第11期页码：127-132
- 作者机构：
  
  西安交通大学理学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201311022
  中图分类号： O636.1
- 网络首发：2013-11-10，
  
  纸质出版：2013
- 稿件说明：
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孙艳芳, 刘芸. 壳聚糖的交联改性及其吸附铜和铅离子的研究[J]. 西安交通大学学报, 2013,47(11):127-132.

Adsorption of Pb(II)and Cu(II)Ions by Cross-Linked Chitosan Beads[J]. 2013, 47(11): 127-132.
孙艳芳, 刘芸. 壳聚糖的交联改性及其吸附铜和铅离子的研究[J]. 西安交通大学学报, 2013,47(11):127-132. DOI： 10.7652/xjtuxb201311022.

Adsorption of Pb(II)and Cu(II)Ions by Cross-Linked Chitosan Beads[J]. 2013, 47(11): 127-132. DOI： 10.7652/xjtuxb201311022.

摘要

针对壳聚糖上的氨基在酸性溶液中易质子化

从而限制了应用的问题

对壳聚糖的交联改性进行了研究。首先用柠檬酸三钠和环氧氯丙烷为交联剂制备了改性壳聚糖(CTS-CA-ECH)珠粒

然后运用热重分析、红外光谱和X射线衍射等手段进行了表征

由此探讨了pH值、温度、吸附时间、离子溶液初始浓度对CTS-CA-ECH珠粒吸附铜和铅离子的影响

研究了CTS-CA-ECH对铜和铅离子的吸附动力学和吸附等温特性

并进行了吸附剂的再生实验。结果表明:改性后的壳聚糖对铜和铅离子的吸附可由二级吸附动力学和Langmuir吸附等温模型描述

CTS-CA-ECH珠粒具有良好的再生吸附性能。

Abstract

For the facts that the amino groups in chitosan(CTS)are prone to be protonated and the application of chitosan in water treatment is therefore greatly limited

modification of chitosan via cross-linking was carried out in this study. Modified CTS beads were prepared using sodium citrate(CA)and epichlorohydrin(ECH)as cross-linkers. The chemical structure of the cross-linked chitosan beads was characterized by TGA

FTIR spectroscopy and XRD. The effects of pH value

temperature

contact time and initial concentration of metal ions on the adsorption of Cu(II)and Pb(II)ions by CTS-CA-ECH beads were investigated. The adsorption kinetics was evaluated using the pseudo-first-order and pseudo-second-order models

and the adsorption equilibrium isotherms were examined by Langmuir and Freundlich models. The desorption and regeneration tests were performed. The results show that the adsorption process fits well with the pseudo-second-order kinetic model

and the adsorption equilibrium isotherms agree well with the Langmuir models. The present adsorbent has excellent reusability for the adsorption of Cu(II)and Pb(II)ions.

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references

ZHOU L M, WANG Y P, LIU Z R, et al. Characteristics of equilibrium, kinetics studies for adsorption of Hg(II), Cu(II), and Ni(II)ions by thiourea-modified magnetic chitosan microspheres [J]. Journal of Hazardous Materials, 2009, 161(2/3): 995-1002.

SHAFAEI A, ASHTIANI F Z, KAGHAZCHI T. Equilibrium studies of the sorption of Hg(II)ions onto chitosan [J]. Chemical Engineering Journal, 2007, 133(1/2/3): 311-316.

CHEN A H, LIU S C, CHEN C Y, et al. Comparative adsorption of Cu(II), Zn(II), Pb(II)ions in aqueous solution on the crosslinked chitosan with epichlorohydrin [J]. Journal of Hazardous Materials, 2008, 154(1/2/3): 184-191.

WAN-NGAH W S, FATINATHAN S. Pb(II)biosorption using chitosan and chitosan derivatives beads: equilibrium, ion exchange and mechanism studies [J]. Journal of Environmental Science, 2010, 22(3): 338-346.

LAUS R, COSTA T G, SZPOGANICZ B, et al. Adsorption and desorption of Cu(II), Cd(II)and Pb(II)ions using chitosan crosslinked with epichlorohydrin-triphosphate as the adsorbent [J]. Journal of Hazardous Materials, 2010, 183(1/2/3): 233-241.[6] CHIOU M S, LI H Y. Adsorption behavior of reactive dye in aqueous solution on chemical cross-linked chitosan beads [J]. Chemosphere, 2003, 50(8): 1095-1105.

VASCONCELOS H L, CAMARGO T P, GONÇALVES N S, et al. Chitosan crosslinked with a metal complexing agent: synthesis, characterization and copper(II)ions adsorption [J]. Reactive and Functional Polymers, 2008, 68(2): 572-579.

GUIBAL E. Interactions of metal ions with chitosan-based sorbents: a review [J]. Separation and Purification Technology, 2004, 38(1): 43-74.

GONÇALVES V L, LARANJEIRA M C M, FÁVERE V T, et al. Effect of crosslinking agents on chitosan microspheres in controlled release of diclofenac sodium [J]. Polímeros, 2005, 15(1): 6-12.

WAN NGAH W S, HANAFIAH M, YONG S S. Adsorption of humic acid from aqueous solution on crosslinked chitosan-epichlorohydrin beads: kinetics and isotherm studies [J]. Colloids and Surfaces: B Biointerfaces, 2008, 65(1): 18-24.

PARK J H, JUNG D. Removal of total phosphorus(TP)from municipal wastewater using loess [J]. Desalination, 2011, 269(1/2/3): 104-110.

SHU X Z, ZHU K J, SONG W H. Novel pH-sensitive citrate cross-linked chitosan film for drug controlled release [J]. International Journal of Pharmaceutics, 2001, 212(1): 19-28.

LAUS R, FÁVERE V T. Competitive adsorption of Cu(II)and Cd(II)ions by chitosan crosslinked with epichlorohydrin-triphosphate [J]. Bioresource Technology, 2011, 102(19): 8769-8776.

LI N, BAI R B. A novel amine-shielded surface crosslinking of chitosan hydrogel beads for enhanced metal adsorption performance [J]. Industrial and Engineering Chemistry Research, 2005, 44(17): 6692-6700.

GUPTA S S, BHATTACHARYYA K G. Adsorption of Ni(II)on clays [J]. Journal of Colloid and Interface Science, 2006, 295(1): 21-32

WU F C, TSENG R L, JUANG R S. Kinetic modeling of liquid-phase adsorption of reactive dyes and metal ions on chitosan [J]. Water Research, 2001, 35(3): 613-618.

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