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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Advances in Environmental Technologies: Recycling and Sustainability Joint Session
Presentation Title D-7: Preparation of Core-shell Fe3O4@SiO2 Nanoparticles from Iron Tailing via Chemical Co-precipitation Method
Author(s) Chao Lv, Shuming Wen, Kun Yang, Shaojun Bai
On-Site Speaker (Planned) Shaojun Bai
Abstract Scope In this study, iron was extracted from an iron tailing by phosphoric acid for synthesizing a high-value magnetic Fe3O4 nano-powder product by chemical co-precipitation. Furthermore, the Fe3O4 nano-powder was modified by coating with SiO2, the core-shell Fe3O4@SiO2 nanoparticles would have a big potential in water decontamination, biological science and medical technology. Under the optimum leaching condition, iron leaching efficiency could reach 81.55%. The synthetic Fe3O4 NPs with a high purity (Total Fe 72.04 %). Fe3O4 and Fe3O4@SiO2 particles were characterized by X-ray diffraction (XRD), Transmission Electron Microscope (TEM), Fourier transform infrared spectroscopy (FT-IR) and magnetic analysis. The results showed that the synthesized Fe3O4 NPs had a high level of crystallinity with an average diameter of about 10nm and Fe3O4@SiO2 NPs exhibited better dispersion and uniform spherical morphology with about 20nm diameter. Therefore, a new way was proposed for utilization of the iron tailings.
Proceedings Inclusion? Planned:


A Low Temperature Procedure for the Delamination of Brominated Epoxy Resin of Waste Printed Circuit Boards
Accelerating Life-cycle Management Protocols for New Generation Batteries
Addressing Criticality in Rare Earth Elements through Strategic Recycling
Characteristics of Municipal Solid Waste Incineration Bottom Ash with Particulate Matters PM2.5 ~PM10
D-4: Chronopotentiometry Applied to the Determination of Copper Transport Properties through a Cation-exchange Membrane
D-5: Effect of Flow Rate on Metals Adsorption of Synthetic Solution Using Chelating Resin Dowex XUS43605 in Column Experiments
D-6: Evaluation of the Silver Recovery from Solid Industrial Wastes in an Electrochemical Reactor
D-7: Preparation of Core-shell Fe3O4@SiO2 Nanoparticles from Iron Tailing via Chemical Co-precipitation Method
D-8: Recycling of Worn Lithium Ion Batteries through a Process of Co-grinding with PVC
D-9: Chemical Reduction of Fe(III) in Nickel Lateritic Wastewater to Recover Metals by Ion Exchange
Development of a Separation Process of NBR/ HNBR Rubber from Metal Substrate
Development of Open Source Software Tool for Life Cycle Assessment of Rare Earth Elements Production
Environmental Implications of Laser Metal Deposition: The Role of Feedstock Powder and Material Utilization Fraction
Fabrication of Aluminum Foam from Aluminum Scrap
Recovery of Aluminum from the Secondary Aluminum Production Dust
Recovery of Electrolytic Zinc from Aqueous Wastes: An Approach to the Industry of Hot Dip Galvanized
Recovery of Metals and Nonmetals from Waste Printed Circuit Boards (PCBs) by Physical Recycling Techniques
Scoping the Potential of Coal Ash as a Source of Rare Earth Elements
Understanding Scrap Recycling and the Potential of Hand-held Elemental Analyzers

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