Research on the flotation behaviour of platinum group minerals (PGM) has mainly focused on the flotation of base metal sulphides because of their association with the PGMs and due to the assumption that the PGMs would respond similarly to such sulphides in their flotation behaviour. It has been ...

In the alluvial deposits of the Prizhlimny Creek (southern part of the Koryak Highland), grains of platinum-group minerals are found along with gold. We have established that the grains are native platinum (Pt, Fe) containing Cu (up to 5 wt.%), Os (up to 8 wt.%), and Rh (up to 2 wt.%). Inclusion...

We report the synthesis of a new range of iron oxide–graphene oxide (GO) nanocomposites having different iron oxide content (36–80 wt%) as high-performance adsorbents for arsenic removal. Synthesized by co-precipitation of iron oxide on GO sheets that are prepared by an improved Hummers method...

The simultaneous removal of hydrated silica, fluoride and arsenic from deep well water (hydrated silica 72 mgL−1, fluoride 4.4 mgL−1, arsenic 106.2 μgL−1, sulfate 50 mgL−1, phosphate 0.99 mgL−1, pH = 8.2 and conductivity 659 μScm−1) by electrocoagulation (EC) was investigated. The EC was perfo...

The wide-spread arsenic contamination is considered one of the most global serious environmental issues in the world. In this work, enhanced arsenic removal from water by the oxidation of FeSO4 with CaCO3 in air was investigated and the mechanisms were discussed. Oxidation of Fe(II) into Fe(OH)3...

This study explores the in-situ precipitation of scorodite (FeAsO4.2H2O) during the atmospheric enargite leaching in acid chloride media. The temperature, oxygen sparging rate and the different fractions of the catalyst and ferric ions were the effective parameters on the scorodite precipitation...

Novel hydrated zirconium oxide (ZrO(OH)2) coated carbon nanotubes (CNTs) were prepared via a filtration-steam hydrolysis method, and were used to remove As(III) and As(V) from drinking water. This adsorbent was characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (X...

As(III) is more toxic and harder to remove than As(V) though they are always co-exist in water. In order to effectively eliminate pollution of arsenic and explore the adsorption mechanism, a novel-innovative hydrated zirconium oxide (ZrO(OH)2) and manganese dioxide (MnO2) coated modified activat...

With increasing arsenic contamination scenes reported around the globe, the highly promising materials are important to remove the arsenic from industrial and specified contaminated for safe-guarding the public health. In this study, we have prepared ligand anchoring inorganic-organic frameworks...

Marine ferromanganese crusts and nodules as potential mineral deposits have received increasing attention. However, much less knowledge is available concerning the incorporation and enrichment mechanisms for antimony (Sb) and arsenic (As) in marine ferromanganese oxides. In this study, the surfa...

A paper devotes to theoretical and experimental studying the magnetoelectric interaction in layered structures of amorphous ferromagnetic alloy and single- crystal gallium arsenide.The authors investigated the magnetoelectric effect in the (100) plane of gallium arsenide in the electromechanical...

Full potential-linearized augmented plane wave (FP-LAPW) method within density functional theory (DFT) was applied to study the structural and electronic properties of the magnesium arsenide in both cubic and hexagonal phases. The exchange–correlation functional was approximated as a generalize...

Massive realgar tailings abandoned in mining areas in China have caused serious arsenic (As) pollution seeking for urgent disposal. Stabilization treatment is a feasible strategy, however, stabilization technologies for realgar tailings, that are Fe-deficient, Ca-rich and S-rich, have not been w...

Arsenic contamination has raised great concern around the world as the cause of many severe health issues, including internal and external cancers. Discharging arsenic waste into the environment before proper handling is strictly forbidden. In order to treat the arsenic-bearing wastes in a safe ...

To better understand the Pt-As association in natural magmas, experiments were done at 1200 °C and 0.1 MPa to measure the solubility of Pt and Pt-arsenide phases (melt and sperrylite, PtAs2), as well as to determine the oxidation state, and identify evidence for Pt-As complexing, in molten sili...

Waste light-emitting diodes (WLED) are of major interest as they are a considered secondary source of valuable metals with a high potential for polluting the environment. To recover the valuable metals from WLEDs, various methods have been applied such as direct and indirect bioleaching. A novel...

The structure and magnetic properties of the MeMnxAl12−x and MeFexAl12−x systems, where Me = rare earth or actinide, are presented. It is established that the magnetic order for the Mn compounds results from the antiferromagnetically coupled f-electron sublattice whereas in the Fe alloys both su...

Deviations of atomic volume from additivity are determined for transition metal germanides, silicides, and aluminides. On the basis of the interrelation between the atomic volume deviations and the occurrence of semiconducting properties the possibility of semiconducting properties in some compo...

The atomic structure of a new ternary Th4Fe3Al32 phase appearing in the alloy with composition Al–5 at.%Th–2.5 at.% Fe was solved using electron crystallography and X-ray diffraction techniques. Unit cell dimensions, type of Bravais lattice and the symmetry of the new compound were determined ...

Polycrystalline samples of AxV2Al20 (A = Ce, Th, U, Np, Pu; 0.7 ≤ x ≤ 1.0) actinide intermetallics were synthesized using the arc-melting method. Crystal structure studies were performed by means of powder x-ray diffraction and the Rietveld refinement method. All studied compounds crystallize ...