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Current Analytical Chemistry

Editor-in-Chief

ISSN (Print): 1573-4110
ISSN (Online): 1875-6727

Research Article

Toxic Metal Ions Removal from Electroplating Wastewater Using Polymer Chelating Ligands

Author(s): Md L. Rahman*, Mohd S. Sarjadi, Sazmal E. Arshad, Baba Musta, Mohd H. Abdullah, Shaheen M. Sarkar and Emmet J. O'Reilly

Volume 17, Issue 5, 2021

Published on: 08 January, 2020

Page: [640 - 652] Pages: 13

DOI: 10.2174/1573411016666200108153450

Price: $65

Abstract

Background: Empty fruit bunch (EFB) is a type of biomass waste product formed during the production process of palm oil. In the present work, EFB was used to prepare a cellulose-graft-copolymer which can be converted into poly(amidoxime)-poly(hydroxamic acid) ligands suitable for the removal of heavy metals from electroplating wastewater.

Methods and Results: Poly(amidoxime)-poly(hydroxamic acid) ligands were synthesized from the poly(acrylonitrile-co-methyl acrylate) grafted palm cellulose and were analyzed via FT-IR and FESEM. The binding capacity (qe) with the metals ions such as copper (Cu2+), iron (Fe3+), cobalt (Co2+), nickel (Ni2+) and lead (Pb2+) were 341, 290, 284, 204 and 482 mg g-1, respectively at pH 6. The pseudo-first-order kinetic model is fitted with the results confirming heavy metal adsorption. The isotherm study was conducted using a linear plot of the Langmuir isotherm where results were significantly different from the experimental value (maximum adsorption, qe), indicating that adsorption does not occur on a single layer. However, the coefficient of the correlation values obtained using the Freundlich isotherm model was acceptable (R2>0.99), and it was concluded that adsorption was multilayered with some metal ions.

Conclusion: The polymeric ligands synthesized here showed excellent adsorption of heavy metals from electroplating wastewater containing a notable amount of copper and iron metal ions.

Keywords: Adsorption, amidoxime, electroplating wastewater, heavy metals, palm cellulose, Empty Fruit Bunch (EFB).

Graphical Abstract

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