|
Copperas Works
Copperas works are manufactories where copperas (iron(II) sulfate) is produced from pyrite, often obtained as a byproduct during coal mining, and iron. The history of producing green vitriol, as it was known, goes back hundreds of years in Scotland. In 1814 the wool-producing city of Steubenville, Ohio had seven copperas-producing manufacturers. Pyrite has been used since classical times to manufacture ''copperas''. Iron pyrite was heaped up and allowed to weather (an example of an early form of heap leaching). The acidic runoff from the heap was then boiled with iron to produce iron sulfate. Containment of leachate is important due to its toxicity; a fish kill that occurred in the 1890s in the Kanawha River was attributed to copperas solution release from the mines in Cannelton, West Virginia. The "vitriolic waters of Fahlun" (Falun, Sweden), according to Murray (1844), annually produced "about 600 quintals of green vitriol" (sulfate of iron), as well as a "small quantity of blue ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copperas House, Limb Valley (geograph 2106189)
Iron(II) sulfate (British English: iron(II) sulphate) or ferrous sulfate denotes a range of salt (chemistry), salts with the formula Iron, Fe Sulfate, SO4·''x''H2O. These compounds exist most commonly as the heptahydrate (''x'' = 7) but several values for x are known. The hydrated form is used medically to treat iron deficiency, and also for industrial applications. Known since ancient times as copperas and as green vitriol (vitriol is an archaic name for sulfate), the blue-green heptahydrate (hydrate with 7 molecules of water) is the most common form of this material. All the iron(II) sulfates dissolve in water to give the same metal aquo complex, aquo complex [Fe(H2O)6]2+, which has octahedral molecular geometry and is paramagnetic. The name copperas dates from times when the copper(II) sulfate was known as blue copperas, and perhaps in analogy, iron(II) and zinc sulfate were known respectively as green and white copperas. It is on the WHO Model List of Essential Medi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
