Please use this identifier to cite or link to this item:
Title: Fe 3O 4/cyclodextrin polymer nanocomposites for selective heavy metals removal from industrial wastewater
Authors: Badruddoza, A.Z.M.
Shawon, Z.B.Z.
Tay, W.J.D.
Hidajat, K. 
Uddin, M.S.
Keywords: β-Cyclodextrin polymer
Heavy metals
Magnetic nanocomposites
Selective adsorption
Issue Date: 2-Jan-2013
Source: Badruddoza, A.Z.M., Shawon, Z.B.Z., Tay, W.J.D., Hidajat, K., Uddin, M.S. (2013-01-02). Fe 3O 4/cyclodextrin polymer nanocomposites for selective heavy metals removal from industrial wastewater. Carbohydrate Polymers 91 (1) : 322-332. ScholarBank@NUS Repository.
Abstract: In this work, carboxymethyl-β-cyclodextrin (CM-β-CD) polymer modified Fe 3O 4 nanoparticles (CDpoly-MNPs) was synthesized for selective removal of Pb 2+, Cd 2+, Ni 2+ ions from water. This magnetic adsorbent was characterized by TEM, FTIR, XPS and VSM. The adsorption of all studied metal ions onto CDpoly-MNPs was found to be dependent on pH, ionic strength, and temperature. Batch adsorption equilibrium was reached in 45 min and maximum uptakes for Pb 2+, Cd 2+ and Ni 2+ in non-competitive adsorption mode were 64.5, 27.7 and 13.2 mg g -1, respectively at 25 °C. Adsorption data were fitted well to Langmuir isotherm and pseudo-second-order models for kinetic study. The polymer grafted on MNPs enhanced the adsorption capacity because of the complexing abilities of the multiple hydroxyl and carboxyl groups in polymer backbone with metal ions. In competitive adsorption experiments, CDpoly-MNPs could preferentially adsorb Pb 2+ ions with an affinity order of Pb 2+ Cd 2+ > Ni 2+ which can be explained by hard and soft acids and bases (HASB) theory. Furthermore, we explored the recyclability of CDpoly-MNPs. © 2012 Elsevier Ltd.
Source Title: Carbohydrate Polymers
ISSN: 01448617
DOI: 10.1016/j.carbpol.2012.08.030
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 8, 2018


checked on Feb 7, 2018

Page view(s)

checked on Mar 12, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.