a high-sulfur coal from nantong coal mine chonqing china was used. table 1 lists data of proximate analysis and sulfur content of the coal. the pyrite was taken from a coal mine in shanxi province china. sodium chloride (nacl analytical reagent purchased from shanghai chemical reagent plant) was used as the supporting electrolyte.electrochemical reduction of pyrite in aqueous nacl electrochemical reduction of pyrite in aqueous nacl solution a quantitative analytical method for mixtures was developed from measurements of the charge passed in reducing the adsorbed layer
influence of the antibiotic concentration on the change of toc removal with electrolysis time during the ef-pyrite degradation of 200 ml of levofloxacin solutions with 0.05 m na 2 so 4 and 1.0 g l −1 pyrite at ph 3.0 and 25 °c by applying 300 ma. initial levofloxacin content: ( ) 0.23 mm ( ) 0.46 mm and ( ) 0.70 mm.sulfur - wikipediasulfur (in british english sulphur) is a chemical element with the symbol s and atomic number 16. it is abundant multivalent and nonmetallic.under normal conditions sulfur atoms form cyclic octatomic molecules with a chemical formula s 8.elemental sulfur is a bright yellow crystalline solid at room temperature. sulfur is the tenth most common element by mass in the universe and the fifth
1. introduction. pyrite fes 2 is the most common sulphide mineral.it is found in magmatic and igneous rocks sedimentary deposits and hydrothermal deposits. it is a commercial source of sulphuric acid and it is presently mined as a source of gold and cobalt which are associated with it.sigma-aldrich: analytical biology chemistry & materials sigma-aldrich is a leading life science and high technology company. our products are used worldwide to enable science that improves the quality of life.
on the rest potential of pyrite electrode in oxygen-free solutions of iron(ii) sulfate 79 2 0 0 0 m 2 2 s ms e e e ++ − = where 0 m m2+ e is the standard potential of the metal in the solution of metal ions and 0 s 2 s e − is the standard potential of sulfur in the solution of sulfide ions.pyrite - wikipediapyrite is usually found associated with other sulfides or oxides in quartz veins sedimentary rock and metamorphic rock as well as in coal beds and as a replacement mineral in fossils but has also been identified in the sclerites of scaly-foot gastropods. despite being nicknamed fool's gold pyrite is sometimes found in association with small quantities of gold.