article · Journal of Nanomaterials
Binary titanium and iron oxide nanomaterials with varying iron oxide proportions were produced using an impregnation method to test their ability to remove lead from water. Material characterisation confirmed the successful incorporation of iron oxide into the titanium dioxide lattice alongside its thermal and structural properties. In laboratory batch adsorption experiments, operational conditions including solution pH, material dosage, contact duration, agitation rate, and lead concentration were systematically adjusted. Evaluation of several adsorption isotherm and kinetic models revealed that the Langmuir isotherm and pseudo-second-order kinetic models provided the closest fit to the experimental data. Further assessments of mean adsorption energy, reaction spontaneity, and material reproducibility demonstrated that the uptake of lead is primarily governed by a physical adsorption mechanism rather than chemical bonding.
Lead is a toxic heavy metal that threatens water safety and human health. Developing reliable, reusable adsorbents is essential for tackling heavy metal contamination in water sources. By clarifying how mixed metal oxide nanomaterials physically capture lead under varied conditions, this research provides the fundamental parameters needed to design more efficient filtration systems for treating polluted water.
This technology is relevant to industrial wastewater treatment and environmental remediation operators seeking materials to remove lead from contaminated solutions. Based purely on laboratory-scale batch experiments and material characterisation, the work represents early-stage research. Real-world deployment would require pilot testing in continuous flow systems, evaluation against complex multi-pollutant effluents, and detailed assessments of manufacturing costs at scale.
AI-generated from the published abstract. Always read the original work before citing.
TiO 2 -Fe 2 O 3 binary oxides containing different percentage of Fe 2 O 3 were synthesized using impregnation method. The Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), and thermogravimetric with differential thermal analyzer (TG-DTA) analytical techniques were used for understanding of the physicochemical properties and well impregnation of Fe 2 O 3 in TiO 2 lattice. During adsorption study, pH of the solution, adsorbent dosage, time of contact, agitation speed, and concentration of adsorbate were optimized. From Langmuir, Freundlich, FG, D-RK, Temkin, and FH adsorption isotherm models, relatively, Langmuir isotherm model fits well. For adsorption-reaction kinetic model, pseudo-first order (PFO), pseudo-second order (PSO), and Elovich were tested and intraparticle diffusion (IPD) for adsorption-diffusion kinetic models. Out of those, the PSO fits well; this indicates that the mechanism of adsorption is under control of adsorption-reaction. The mean adsorption energy, spontaneity, and reproducibility of the adsorbent were also conducted, and all of those studies support the domination of physical adsorption mechanism.
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DOI: 10.1155/2018/9651039
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