In general, leaching is the extraction of certain materials from a carrier into a liquid (usually, but not always a solvent). Specifically, it may refer to:
In agriculture, leaching refers to the loss of water-soluble plant nutrients from the soil, due to rain and irrigation. Soil structure, crop planting, type and application rates of fertilizers, and other factors are taken into account to avoid excessive nutrient loss....
In the chemical processing industry, leaching is known as Resource extraction. Leaching has a variety of commercial applications, including separation of metal from ore using acid, and sugar from beets using hot water....
Leaching is a widely used extractive metallurgy technique which converts metals into soluble salts in aqueous media. Compared to Pyrometallurgy operations, leaching is easier to perform and much less harmful, because no gaseous pollution occurs....
Dump leaching is an industrial process to extract precious metals and copper from ores.Dump leaching is similar to heap leaching, however in the case of dump leaching ore is taken directly from the mine and stacked on the leach pad without crushing where, in the case of gold and silver, the dump is irrigated with a dilute cyanide solution t...
Tank leaching, also called vat leaching, is a hydrometallurgy method of extracting valuable material from ore. It involves placing ore, usually after size reduction and classification, in large tanks or vats containing a leaching solution....
In pedology , leaching is the loss of mineral and organic solutes due to percolation. It is a mechanism of pedogenesis. It is distinct from the soil forming process of eluviation, which is the loss of mineral and organic colloids....
Bioleaching is the extraction of specific metals from their ores through the use of bacterium. Bioleaching is one of several applications within biohydrometallurgy and several methods are used to recover copper, zinc, lead, arsenic, antimony, nickel, molybdenum, gold, and cobalt....
In cooking, leaching generally refers to Parboiling.
Leach may refer to:* Leach, Oklahoma in the United States* Leach Highway* Leach orchid* Leach, Cambodia* a phenotype caused by a mutation in the gene encoding glycophorin C...
