Removal of copper, nickel and zinc ions from aqueous solution by chitosan8-hydroxyquinoline beads

被引：54

作者：

Barros, Francisco C. F. ^{[1
]}

Sousa, Francisco W. ^{[2
]}

Cavalcante, Rivelino M. ^{[1
]}

Carvalho, Tecia V. ^{[1
]}

Dias, Francisco S. ^{[1
]}

Queiroz, Danilo C. ^{[1
]}

Vasconcellos, Luiz C. G. ^{[1
]}

Nascimento, Ronaldo F. ^{[1
]}

机构：

[1] Univ Fed Ceara, Dept Quim Analit & Fis Quim, BR-60451970 Fortaleza, Ceara, Brazil

[2] Univ Fed Ceara, Dept Engn Hidraul & Ambiental, BR-60451970 Fortaleza, Ceara, Brazil

来源：

CLEAN-SOIL AIR WATER | 2008年 / 36卷 / 03期

关键词：

metal adsorption; breakthrough curve; chitosan beads; effluent wastewater; 8-hydroxyquinoline;

D O I：

10.1002/clen.200700004

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In this work, 8-hydroxyquinoline is used as the active sites in cross-linked chitosan beads with epichlorchydrin (CT-8HQ). The CT-8HQ material was shaped in bead form and used for heavy metal removal from aqueous solution. The study was carried out at pH 5.0 with both batch and column methods and the maximum adsorption capacity of metal ions by the CT-8HQ was attained in 4 h in the batch experiment. The adsorption capacity order was: Cu2+ > Ni2+ > Zn2+ for both mono- and multi-component systems with batch conditions. From breakthrough curves with column conditions, the adsorption capacity followed the order Cu2+ > Zn2+ > Ni2+ for both monoand multi-component systems. The CT-8HQ beads maintained good metal adsorption capacity for all five cycles with absorbent restoration achieved with the use of 1.0 mol L HCl solution, with 90% regeneration.

引用

页码：292 / 298

页数：7

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