A facile precursor dependent single step, one pot solution based synthesis of wurtzite and chalcopyrite polymorphs of CuFeS2 has been developed by reacting a Cu(I) thiourea complex with Fe2(SO4)3 and FeCl3 separately in ethylene glycol. The phases have been characterized by structural refinements, SEM-EDX, TEM-SAED, Raman, UV-Visible spectroscopy and TGA measurements.

The present study aims for characterization and classification of five different spent petroleum refinery catalysts followed by metal recovery via bioleaching. nomenclature given to the catalyst (SC) is SC1, SC2, SC3, SC4 SC5 collected from an Indian refinery. All were crushed ground prior their X-Ray Fluorescence chemical composition Diffraction Scanning Electron Microscopy-Energy Dispersive S...

The feasibility of processing low-grade copper-nickel ores by heap bioleaching was investigated. It found that an iron-oxidizing strain acidophilic microorganisms, Acidithiobacillus ferrivorans, is effective in the leaching sulfide from deposits Russia’s Murmansk region. Sulfide mineralization studied mineral feeds described using methods X-ray phase analysis and optical microscopy. In process ...

Abstract Chalcopyrite (CuFeS 2 ) is the most refractory copper mineral when treated in conventional sulfate media leaching systems. This first study to examine use of a dimethyl sulfoxide (CH 3 SOCH , DMSO) solution containing chloride (CuCl for chalcopyrite. Leaching experiments concentrate composed mainly chalcopyrite were conducted at ambient pressure 313–413 K. The fractions Cu, Fe, S, Au, ...

bioleaching is the extraction of metals from their ores through the use of microorganisms. inthis process, the use of native bacteria leads to achieve more yields of metals. so, in the presentstudy, native sulfur-oxidizing bacterium in potentiality of uranium extraction was isolated fromghachin mine in iran and identified by partial gene sequencing. for this purpose, the watersamples were colle...

Colemanite is one of the most important underground riches of Turkey, having approximately 60% of the world boron deposits, and it has a large portion in the deposits. In this study, chemical leaching and biological leaching methods were used for production of boric acid from colemanite (2CaO · 3B3O3 · 5H2O) (Emet-Kütahya, Turkey). Oxalic acid concentration, temperature, stirring time and solid...