Synthesis of ethylenediamine modified chitosan and evaluation for removal of divalent metal ions

被引：59
作者：
Chethan, P. D. [1 ]
Vishalakshi, B. [1 ]
机构：
[1] Mangalore Univ, Dept Postgrad Studies & Res Chem, Mangalagangothri Dk 574199, Karnataka, India
来源：
CARBOHYDRATE POLYMERS | 2013年 / 97卷 / 02期
关键词：
Ethylene-1,2-diamine-6-deoxychitosan; Metal ion removal; Langmuir adsorption; Competitive adsorption; Desorption; COMPETITIVE ADSORPTION; CD(II) IONS; CU(II); EQUILIBRIUM; DERIVATIVES; SORPTION; COPPER; NI(II);
D O I：
10.1016/j.carbpol.2013.04.102
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Selective modification of chitosan has been achieved by incorporating ethylene-1,2-diamine molecule in a regioselective manner using N-phthaloylchitosan and chloro-6-deoxy N-phthaloylchitosan as precursors. The present modification results in additional nitrogen centres which function as potential binding sites during adsorption of metal ions. The derivative ethylene-1,2-diamine-6-deoxy-chitosan and its pthaloylated precursor have been evaluated for divalent metal ion removal. The former is found to have higher capacity for adsorption due to the presence of additional -NH2 group. The samples exhibited highest affinity for Cu and least for Zn. About 80% of the adsorbed metal ions could be stripped in a solution of pH 1.2. The interaction between acidic metal centres and basic nitrogen centres on surface of the adsorbent appears to govern adsorption. Intrachain and interchain co-ordinate bonding involving NH and NH2 groups is proposed to be the mechanism of formation of metal-adsorbent complex. The adsorption process is described by Langmuir model. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：530 / 536
页数：7
相关论文
共 18 条
[1]   6-Deoxy-6-mercaptocellulose and its S-substituted derivatives as sorbents for metal ions [J].
Aoki, N ;
Fukushima, K ;
Kurakata, H ;
Sakamoto, M ;
Furuhata, K .
REACTIVE & FUNCTIONAL POLYMERS, 1999, 42 (03) :223-233
[2]   Sequestration of Cu(II), Ni(II), and Co(II) by ethyleneimine immobilized on silica [J].
Arakaki, Luiza N. H. ;
Alves, Ana Paula M. ;
da Silva Filho, Edson C. ;
Fonseca, Maria G. ;
Oliveira, Severino F. ;
Espinola, Jose Geraldo P. ;
Airoldi, Claudio .
THERMOCHIMICA ACTA, 2007, 453 (01) :72-74
[3]   Cation removal using cellulose chemically modified by a Schiff base procedure applying green principles [J].
da Silva Filho, Edson C. ;
de Melo, Julio C. P. ;
da Fonseca, Maria G. ;
Airoldi, Claudio .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2009, 340 (01) :8-15
[4]   TRANSPORT STUDIES FOR THE SORPTION OF COPPER IONS BY CHITOSAN [J].
FINDON, A ;
MCKAY, G ;
BLAIR, HS .
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-ENVIRONMENTAL SCIENCE AND ENGINEERING & TOXIC AND HAZARDOUS SUBSTANCE CONTROL, 1993, A28 (01) :173-185
[5]   Chemically modified chitosan beads as matrices for adsorptive separation of proteins by molecularly imprinted polymer [J].
Guo, TY ;
Xia, YQ ;
Hao, GJ ;
Zhang, BH ;
Fu, GQ ;
Yuan, Z ;
He, BL ;
Kennedy, JF .
CARBOHYDRATE POLYMERS, 2005, 62 (03) :214-221
[6]  
KURITA K, 1982, MAKROMOL CHEM, V183, P1161
[7]   Competitive adsorption of Cu(II) and Cd(II) ions by chitosan crosslinked with epichlorohydrin-triphosphate [J].
Laus, Rogerio ;
de Favere, Valfredo Tadeu .
BIORESOURCE TECHNOLOGY, 2011, 102 (19) :8769-8776
[8]   Silica gel containing sulfur, nitrogen and oxygen as adsorbent centers on surface for removing copper from aqueous/ethanolic solutions [J].
Machado, RSA ;
da Fonseca, MG ;
Arakaki, LNH ;
Espinola, JGP ;
Oliveira, SF .
TALANTA, 2004, 63 (02) :317-322
[9]   Potential of chitin/chitosan-bearing materials for uranium recovery: An interdisciplinary review [J].
Muzzarelli, Riccardo A. A. .
CARBOHYDRATE POLYMERS, 2011, 84 (01) :54-63
[10]   Equilibrium studies for the sorption of lead from effluents using chitosan [J].
Ng, JCY ;
Cheung, WH ;
McKay, G .
CHEMOSPHERE, 2003, 52 (06) :1021-1030
12