AN EGGSHELL HYDROXYAPATITE - GRAPHENE OXIDE NANOCOMPOSITE FOR THE REMOVAL OF HEAVY METALS FROM WASTE WATER
نویسندگان
چکیده
Heavy metal pollution is a serious environmental problem that can be remediated by various adsorbents. So, new hydroxyapatite / graphene oxide nanocomposite (HAp/GO) material was synthesized from waste eggshell as green and eco-friendly adsorbent for the effective removal of heavy metals (e.g., Cd, Pb, Cr, Ni, Co) wastewaters. Nano-structured HAp calcination followed hydrothermal treatment in presence phosphate solution. However, GO using Hummar’s method (Guerrero-Contreras Caballero-Briones, 2015). The HAp/GO precursors ultrasonic treatment. morphology, composition, crystal structure, functionality stability sorbent were evaluated Fourier transform infrared spectrophotometry (FTIR), high-resolution transmission electron microscopy (HR-TEM), scanning microscope (SEM), energy dispersive X-ray (EDX), diffraction (XRD), Raman spectrometry N2-BET (Barrett–Emmett–Teller) surface area measurement techniques. equilibrium concentrations measured Inductively Coupled Plasma-Mass Spectrometry (ICP-MS). effect initial concentration metals, dosage HAp/GO, temperature solution pH on adsorption capacity investigated. adopted to achieve superior simultaneous efficiencies (≥ 90 %) (Cd, ions. .
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ژورنال
عنوان ژورنال: Journal of environmental science (Print)
سال: 2021
ISSN: ['2636-3178', '1110-0826']
DOI: https://doi.org/10.21608/jes.2021.180173