Results 171 to 180 of about 1,143 (211)
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Mechanistic study for stibnite oxidative dissolution and sequestration on pyrite
Environmental Pollution, 2020Stibnite (Sb2S3) dissolution and transformation on mineral surfaces are the fundamental steps controlling the fate of antimony (Sb) in the environment. The molecular-level understanding of Sb2S3-mineral-water interfacial reactions is of great importance. Herein, Sb2S3 oxidative dissolution and sequestration on pyrite (FeS2) were explored.
Li, Yan, Tingshan, Chan, Chuanyong, Jing
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Stibnite at modified Becke-Johnson exchange potential
Experimental and Theoretical NANOTECHNOLOGY, 2022The demand for cheaper, nontoxic and earth-abundant materials as absorbing layer for solar cell is immensely needed to replace scarce, toxic and expensive one. In this regard, chalcogenide materials have considerably attracted the attention of a lot of researchers because of showing a great potential for different applications.
null Rabia Hani, null F. Ahmad
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Preparation and characterization of the rod-shaped stibnite
Materials Research Bulletin, 2015Highlights: • A facile route to synthesize large-scale rod-like Sb{sub 2}S{sub 3} micro-wires was presented. • A deep analysis conjoint between band tails, band gap alteration and electrical model. • The band gap is 1.75 eV which may hold for solar energy conversion.
B. Ouni +5 more
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Mechanism of dissolution and oxidation of stibnite mediated by the coupling of iron and typical antimony oxidizing bacteria [PDF]
Environmental Technology and InnovationAntimony oxidizing bacteria (SbOB) and iron oxides are the main driving factors to the weathering dissolution and oxidation of stibnite (Sb2S3) waste ore.
Renjian Deng, Bozhi Ren, Saijun Zhou
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PIXE MICROANALYSIS OF AN ANTIMONY MINERAL, STIBNITE
International Journal of PIXE, 1996For the purpose of establishing an effective exploration model of antimony deposit as a final goal. minor elements in stibnite ( Sb 2 S 3) were analyzed by micro-PIXE. Samples were taken from the largest antimony mine in the world. Xikuangshan. Hunan. China. Measurements were carried out using 1 MeV proton to avoid the problem where low energy tail of
K. ISHIBASHI, X. HU, S. MURAO
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Determination of the Optimum Conditions for the Dissolution of Stibnite in HCl Solutions
Industrial & Engineering Chemistry Research, 1997The Taguchi method has been used to determine optimum conditions for the dissolution of stibnite in HCl solutions. Chosen experimental parameters and their ranges were (i) reaction temperature, 25−70 °C; (ii) solid-to-liquid ratio (in weight), 0.1−0.25; (iii) acid concentration (in weight), 23.71−37%; (vi) mean particle size; 0.1061−0.8426 mm; (v ...
Colak, Sabri +3 more
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Observations on the alteration products of stibnite
Mineralogical Magazine and Journal of the Mineralogical Society, 1941In the mineralogical literature, stibnite is usually stated to change by oxidation into kermesite and finally into valentinite or senarmontire. Another alteration product is described as antimony ochre, a term loosely applied to several minerals, viz. cervantite, stibiconite, and volgerite (Dana, System of mineralogy, 6th edit., 1892, p.
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Technetium sorption by stibnite from natural water
Radiochimica Acta, 2006The sorption of technetium by powdered and polished mineral stibnite Sb2S3 has been investigated in simulated and natural underground waters from the Meuse/Haute–Marne region (France). The sorption by powdered stibnite has been found to be complete under both aerobic and anaerobic conditions in batch experiments.
V. Peretroukhine +6 more
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The crystal structure of stibnite. A redetermination of atomic positions
Zeitschrift für Kristallographie - Crystalline Materials, 1960The crystal structure of stibnite as determined formerly by HOFMANN has been confirmed, but a refined set of atomic coordinates has been obtained.
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Non-oxidative leaching of mechanically activated stibnite
Hydrometallurgy, 1992Abstract The results obtained by leaching stibnite with a basic solution of sodium hydrogen sulphide are presented in this paper. The intensification of leaching by the mechanical activation produced by grinding the mineral in a planetary mill for 20 min brings about acceleration of the process by tenfold.
P Baláž +4 more
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