Analytical Methods in Environmental Chemistry Journal
AMECJ

Developing a magnetic nanocomposite adsorbent based on carbon quantum dots prepared from Pomegranate peel for the removal of Pb(II) and Cd(II) ions from aqueous solution

Document Type : Original Article

Authors

Yaghoub Pourshojaei 1
Alireza Nasiri 2
Hamideh Asadollahzadeh 3
Mahdiyeh Ghazizadeh 4
Mohammad Manzari 4

1 Department of Medicinal Chemistry, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran.

2 Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Postal code:7619813159, Kerman, Iran.

3 aDepartment of Chemistry, Faculty of Science, Kerman branch, Islamic Azad University, Kerman, Iran, P. O. Box 7635131167, Kerman, Iran

4 Department of Chemistry, Faculty of Science, Kerman branch, Islamic Azad University, Kerman, Iran, P. O. Box 7635131167, Kerman, Iran

https://doi.org/10.24200/amecj.v4.i03.149
Abstract
Agriculture waste is a good choice for the production of carbon dots owing to its abundance, wide availability, eco-friendly nature. In this study a novel magnetic bioadsorbent based on carbon quantum dots (Fe3O4-PPCQDs) from Pomegranate peel (PP) was used as adsorbent to remove lead (Pb) and cadmium (Cd) from 50 mL of water and wastewater samples by magnetic solid phase extraction (MSPE). After adsorption ions with Fe3O4-PPCQDs at pH=6, the concentration of Pb(II) and Cd (II) ions were determined by flame atomic absorption spectrometry (F-AAS). The manufactured of Fe3O4-PPCQDs and GO nanostructures were structurally characterized by scanning electron microscopy (SEM),  and Fourier transform infrared spectroscopy (FT-IR). The quantum dots were optically characterized by UV–Vis spectroscopy. Batch adsorption experiment was conducted to examine the effects of pH, contact time, temperature and initial concentration of Pb(II) and Cd(II) from the water. The preconcentration factor and LOD for Cd and Pb were obtained 50, and (1.3 μg L-1; 15.5 μg L-1), respectively. The equilibrium data of ions sorption were well described by Langmuir and Freundlich model. The R2 values obtained by Langmuir model were higher. The absorption capacity of Fe3O4-PPCQDs for cadmium and lead were obtained 17.92 and 23.75 mg g-1, respectively. 

Graphical Abstract

Developing a magnetic nanocomposite adsorbent based on carbon quantum dots prepared from Pomegranate peel for the removal of Pb(II) and Cd(II) ions from aqueous solution

Keywords

Carbon quantum dots
Iron oxide nanoparticles
Adsorption
Lead and Cadmium
Isotherms
Flame atomic absorption spectrometry
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Analytical Methods in Environmental Chemistry Journal
Volume 4, Issue 3
Summer 2021
Pages 33-46