Sentence examples for ferrous sulfide from inspiring English sources
noun
The binary sulfide of ferrous iron, FeS, that occurs in several minerals
When pyritic (ferrous sulfide) deposits are exposed to the air by mining operations, there is slow spontaneous oxidation of pyrite to ferrous ions and sulfuric acid.
The majority of sulfur, present as ferrous sulfide (FeS), is removed from the melt not by oxidation but by the conversion of calcium oxide to calcium sulfide: FeS + CaO → CaS + FeO.
When coal seams are exposed to air through mining operations, the pyritic ferrous sulfide deposits are attacked by A. ferrooxidans to generate sulfuric acid, which lowers the pH to 2.0 or even 0.7.
Once in the ocean, some of the sulfur cycles through marine communities as it moves through food chains, some reenters the atmosphere, and some is lost to the ocean depths as it combines with iron to form ferrous sulfide (FeS), which is responsible for the black colour of marine sediments.
Precipitation of calcite, ferrous hydroxide [Fe(OH 2] and ferrous sulfide (FeS) were used to simulate observed changes in major-ion aqueous chemistry.
Patterson and Fendorf [24] demonstrated that freshly prepared ferrous sulfide reduced Cr VI) quite effectively throughout the pH range of 5.0 to 8.0 and reaction occurred at solid-solution interface.
Fe(II) usually works as catalyst and electron transfer mediator in the oxidation of ferrous sulfides and others [6, 9].
The reduction of U VI) and the oxidation of ferrous sulfides including pyrrhotite and pyrite are usually catalyzed by Fe2+ as FeII FeIII− cycling works as electron transporter [7 9].
Uraninite is produced following the reaction of U VI) with a variety of sulfate-reducing, metal-reducing, and other bacteria and with abiotic reductants including mackinawite and other ferrous sulfides and oxides.
The use of ferrous and sulfide oxidizing bacteria in bioleaching processes is a recent technique that has found industrial applications in copper, uranium, cobalt and gold extraction.
In vitro, holo-IRP1 can be easily reconstituted upon incubation of apo-IRP1 with ferrous salts, sulfide and reducing agents [ 139].
