Removal of heavy metal ions using chitosan and modified chitosan: A review

被引：615
|
作者：
Zhang, Lei [1 ,2 ]
Zeng, Yuexian [1 ,2 ]
Cheng, Zhengjun [1 ,2 ,3 ]
机构：
[1] Southwest Petr Univ, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610500, Sichuan, Peoples R China
[2] Southwest Petr Univ, Sch Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China
[3] China West Normal Univ, Chem Synth & Pollut Control Key Lab Sichuan Prov, Nanchong 637002, Sichuan, Peoples R China
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2016年 / 214卷
关键词：
Modified chitosan; Heavy metal; Response surface methodology; Adsorption mechanism; Adsorption kinetics and isotherms; Dynamic adsorption; FIXED-BED COLUMN; ELECTROSPUN NANOFIBER MEMBRANE; RESPONSE-SURFACE METHODOLOGY; MODIFIED MAGNETIC CHITOSAN; AQUEOUS-SOLUTION; SELECTIVE ADSORPTION; EFFICIENT REMOVAL; GRAFTED CHITOSAN; WASTE-WATER; HEXAVALENT CHROMIUM;
D O I：
10.1016/j.molliq.2015.12.013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Chitosan and its modifications have received great attention over the past few decades due to its outstanding adsorption behavior toward various toxic heavy metals from aqueous solutions. In the review, the preparation strategies of modified chitosan (MCS) and its applications have been summarized. The effects of process variables (such as pH, temperature, adsorbent dosage, contact time, and co-existing ions), adsorption kinetics and isotherms, and adsorption mechanism were investigated. Moreover, the process parameters of heavy metal ions onto MCSs were optimized by response surface methodology. Finally, the regeneration of MCSs has been given considerable attention to evaluate their adsorption efficiency, and some dynamic adsorption studies were also discussed. The main objective of this review is to provide up-to-date information about the most important features of chitosan based adsorbents that may be helpful for synthesizing better adsorption property of modified chitosan and promoting its applications for heavy metal contaminate removal. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：175 / 191
页数：17
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