Solubility products of metal sulfides in molten salts: II. Measurements and calculations for lead sulfide in the LiCl-KCl and the LiCl-LiF eutectic compositions

1979 ◽  
Vol 10 (4) ◽  
pp. 477-482 ◽  
Author(s):  
M. L. Saboungi ◽  
J. J. Marr ◽  
M. Blander
Keyword(s):  
Lead Sulfide ◽  
Molten Salts ◽  
Metal Sulfides ◽  
Solubility Products

Oxidation of metal sulfides by Thiobacillus ferrooxidans grown on different substrates

1974 ◽  
Vol 20 (2) ◽  
pp. 141-147 ◽  
Author(s):  
Marvin Silver ◽  
Arpad E. Torma
Keyword(s):  
Lead Sulfide ◽  
Ferrous Sulfate ◽  
Nickel Sulfide ◽  
Thiobacillus Ferrooxidans ◽  
Cell Types ◽  
Metal Sulfides ◽  
Sulfide Ore ◽  
Sulfate Lead ◽  
Chalcopyrite Ore ◽  
Sulfide Concentrate

Thiobacillus ferrooxidans, grown on either ferrous sulfate, lead sulfide concentrate, or chalcopyrite concentrate demonstrated oxygen uptake and CO2 fixation in the presence of ferrous sulfate, chalcopyrite ore, pyrite ore, and red antimony trisulfide. Lead suifide-grown cells could oxidize lead sulfide ore and galena, using the energy obtained for CO2 fixation. All three cell types could oxidize nickel sulfide, but could not fix CO2 in the presence of this substrate. The solubilization of metals from the substrates and the crystallographic changes in the insoluble residues are reported.

A Low Temperature Precursor Sulfuration Route to Metal Sulfides Nanomaterials

2010 ◽  
Vol 148-149 ◽  
pp. 1404-1407
Author(s):  
Ya Hui Zhang ◽  
Xi Cheng ◽  
Qing Wang
Keyword(s):  
Low Temperature ◽  
Zinc Sulfide ◽  
Lead Sulfide ◽  
Nickel Sulfide ◽  
Cobalt Sulfide ◽  
Metal Sulfides

A low-temperature precursor sulfuration route has been established to prepare metal sulfides with different nanostructures during the synthesis of nickel sulfide. The advantages of the low-temperature precursor sulfuration route were testified by the synthesis of different metal sulfides ( lead sulfide, zinc sulfide and cobalt sulfide). It offers a novel path to the preparation of other metal sulfides.

Scanning Electron Microscope Study of Bacteria on Mineral Surfaces

1976 ◽  
Vol 34 ◽  
pp. 130-131
Author(s):  
V.K. Berry
Keyword(s):  
Oxidation Reaction ◽  
Electron Microscope Study ◽  
Elemental Sulfur ◽  
Thiobacillus Ferrooxidans ◽  
Physical Contact ◽  
Metal Sulfides ◽  
Low Grade ◽  
Mineral Surfaces ◽  
Mineral Surface ◽  
Scanning Electron Microscope Study

There are two strains of bacteria viz. Thiobacillus thiooxidansand Thiobacillus ferrooxidanswidely mentioned to play an important role in the leaching process of low-grade ores. Another strain used in this study is a thermophile and is designated Caldariella .These microorganisms are acidophilic chemosynthetic aerobic autotrophs and are capable of oxidizing many metal sulfides and elemental sulfur to sulfates and Fe2+ to Fe3+. The necessity of physical contact or attachment by bacteria to mineral surfaces during oxidation reaction has not been fairly established so far. Temple and Koehler reported that during oxidation of marcasite T. thiooxidanswere found concentrated on mineral surface. Schaeffer, et al. demonstrated that physical contact or attachment is essential for oxidation of sulfur.

Chemical physics of molten salts with organic anions,

1969 ◽  
Vol 66 ◽  
pp. 59-63 ◽  
Author(s):  
A. R. Ubbelohde ◽  
F. R. S.
Keyword(s):  
Molten Salts ◽  
Organic Anions ◽  
Chemical Physics
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