Synthesis of magnetite from raw mill scale and its application for arsenate adsorption from contaminated water

The magnetite particles were chemically synthesized from the waste of hot rolling steel industry. The characterization of the synthesized magnetite was done by using Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM), Energy Dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The synthesized magnetite particles were used for the adsorptive removal of arsenate from…

Adsorption of arsenic (V) on magnetite-enriched particles separated from the mill scale

The magnetite-enriched particles (MEP) were separated from the mill scale on low magnetic intensity ranging from 300 to 500 gauss. The characterization of the MEP was done with scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). The adsorption efficiency of MEP was investigated with batch tests and column operation. The…

Evaluation of arsenate adsorption efficiency of mill-scale derived magnetite particles with column and plug flow reactors

Magnetite particles were synthesized by co-precipitation method from the mill-scale and characterized with FTIR, SEM, EDS and XRD. The proficiency of magnetite particles for arsenate removal is determined with batch adsorption experiments and various types of continuous reactors including column reactor fed from bottom to top, column reactor fed from top to bottom and plug…

Packed Bed Column for Adsorption of Arsenic on Mixed-Valent Iron [Fe(II)-Fe(III)] Oxide Synthesized from Industrial Waste

Hundreds of millions of people in the world regularly intake groundwater that has a high-risk arsenic level. In several parts of Asia, the arsenic concentration reaches up to μ, which is above the drinking water standards of the World Health Organization (μ). The present study discusses the arsenic removal from groundwater using a mixed-valent iron…

Optimization of Arsenic Adsorption by Mill Scale–Derived Magnetite Particles Using Response Surface Methodology

This study focuses on the optimization and application of mill scale–derived magnetite particles for the adsorptive removal of arsenic (As) from groundwater. The reverse coprecipitation method is applied to synthesize the magnetite from the mill scale, a byproduct of the iron and steel industry. The independent variables (initial As concentration, pH, contact time, and adsorbent…

Nature of surface interactions among Fe3O4 particles and arsenic species during static and continuous adsorption processes

This study explored the mechanistic approaches to understand the adsorptive removal of arsenic species from aqueous medium in static and continuous adsorption processes. Fe3O4, an adsorbent is this study, is synthesized by reverse coprecipitation method using iron oxide waste of steel industry as a starting material. The surface properties of Fe3O4 were confirmed by several…

Evaluation of Photovoltaic Thermal Module (PVT) Performance in Kampong Chheuteal Institute of Technology Campus in Kampong Thom province

Photovoltaic thermal modules (PVT) are devices that can convert solar radiation to electricity and hot water. PVTs have been proposed as a renewable source for rural areas in Cambodia. In this study, we evaluated the performance of PVT modules in the Kampong Chheuteal Institute of Technology (KCIT) campus in Kampong Thom province. A mathematical model…

Fabrication of Multi-Faceted Finishing CNC Machine for Improving Accuracy of Biomedical Components Using MAF Process

This research investigates an innovative approach to enhance a high surface accuracy of artificial hip joint component as a femoral head, which utilized in a biomedical engineering. This work examines a magnetic abrasive finishing (MAF) process method via a multi-faceted CNC finishing technique. The multiple axes on X, Y, Z, A employ a movement of…