acid leaching
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Leaching (metallurgy) — Leaching is a widely used extractive metallurgy technique which converts metals into soluble salts in aqueous media. Compared to pyrometallurgical operations, leaching is easier to perform and much less harmful, because no gaseous pollution… … Wikipedia
Acid rain — is rain or any other form of precipitation that is unusually acidic. It has harmful effects on plants, aquatic animals, and infastructure. Acid rain is mostly caused by human emissions of sulfur and nitrogen compounds which react in the… … Wikipedia
Acid sulfate soil — Acid sulfate soils are naturally occurring soils, sediments or organic substrates (e.g. peat) that are formed under waterlogged conditions. These soils contain iron sulfide minerals (predominantly as the mineral pyrite) or their oxidation… … Wikipedia
Leaching (chemical science) — In the chemical processing industry, leaching is known as extraction. Leaching has a variety of commercial applications, including separation of metal from ore using acid, and sugar from beets using hot water. Chloride can also be leached from… … Wikipedia
acid rain — precipitation, as rain, snow, or sleet, containing relatively high concentrations of acid forming chemicals, as the pollutants from coal smoke, chemical manufacturing, and smelting, that have been released into the atmosphere and combined with… … Universalium
Heap leaching — is an industrial mining process to extract precious metals and copper compounds from ore.ProcessThe mined ore is crushed into small chunks and heaped on an impermeable plastic and/or clay lined leach pad where it can be irrigated with a leach… … Wikipedia
Toxicity characteristic leaching procedure — (TCLP) is a soil sample extraction method for chemical analysis employed as an analytical method to simulate leaching through a landfill. The leachate is analysed for substances appropriate to the protocol.The Resource Conservation and Recovery… … Wikipedia
Saltpeter acid — Saltpeter Salt pe ter, Saltpetre Salt pe tre,, n. [F. salp[^e]tre, NL. sal petrae, literally, rock salt, or stone salt; so called because it exudes from rocks or walls. See {Salt}, and {Petrify}.] (Chem.) Potassium nitrate; niter; a white… … The Collaborative International Dictionary of English
Oxalic acid — Oxalic acid … Wikipedia
2,4-Dichlorophenoxyacetic acid — 2,4 Dichlorophenoxyacetic acid … Wikipedia
Chlorendic acid — IUPAC name 1,4,5,6,7,7 hexachlorobicyclo[2.2.1] hept 5 ene 2,3 dicarboxylic acid … Wikipedia
