Abstract
The iron nanoparticles (Fe-NPs) have been synthesized using an environmentally friendly and simple green synthesis method. This study aims to obtain an aqueous extract from natural material wastes for synthesizing Fe-NPs. The produced Fe-NPs were evaluated as adsorbents for removing Pb, Se, Cu, Zn, and Cr from aqueous solutions. The formation of Fe-NPs was observed on exposure of the aqueous extract to the ferrous chloride and ferric chloride solutions. The characterization of the synthesized Fe-NPs was carried out using different instrumental techniques. As a function of the initial metal ion concentration, contact time, and various doses, the removal of the heavy metal ions was investigated. The UV-Vis spectrum of Fe-NPs showed a peak at 386 nm, 386 nm, 400 nm, 420 nm, 210 nm, 215 nm, and 272 nm of banana, pomegranate, opuntia, orange, potato, and onion, respectively. The FT-IR spectra confirmed the attachment of bioactive molecules from plants on the Fe-NPs surface. The effective reduction of metal ions was greatly aided by the -OH functional groups. The functional groups were examined and responsible for adsorption process by nanoparticle powder sample, these peaks are 3400 cm−1, 2900 cm-1, 1600 cm−1,1000 cm−1, and 1550 cm−1. The magnetization measurements revealed superparamagnetic behavior in the produced iron oxide nanoparticles. Heavy metal ions uptake followed a time, dose, and initial concentration-dependent profile, with maximum removal efficiency at 45 min, 0.4 g, and 3.0 mg/L of metal concentration, respectively.
Funder
Deputyship for Research & Innovation, Ministry of Education in Saudi Arabia
Publisher
Public Library of Science (PLoS)
Reference56 articles.
1. Electrochemical treatment of industrial cooling tower blowdown water using magnesium-rod electrode;H.I. Abdel-Shafy;Water Resources and Industry,2020
2. Water purification by membranes: the role of polymer science;G.M. Geise;Journal of Polymer Science Part B: Polymer Physics,2010
3. Environmental contamination by heavy metals;V. Masindi;Heavy metals,2018
4. Tea wastes as a sorbent for removal of heavy metals from wastewater;M. Nandal;Int. J. Curr. Eng. Technol,2014
5. Heavy Metals in Citrus Fruits as Affected by Primary Treated Sewage Irrigation;H.I. Abdel-Shafy;Egyptian Journal of Chemistry,2021