Leaching

is the process by which soluble matter is removed from soil or rock by the action of percolating water.
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leaching

  1. permeate; penetrate gradually; of liquids
  2. remove substances from by a percolating liquid

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leaching

Generally leaching is the dissolution of elements from a surface into the surrounding fluid medium. For the soldering community, the term applies to the action of liquid solder dissolving metals such as silver from surfaces. A particular case where leaching has been observed is the chip ceramic capacitor, whose inner terminals are typically of sil...
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Leaching

• (p. pr. & vb. n.) of Leach
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leaching

(from the article `fission-track dating`) ...hundred million electron volts of energy and produces a large amount of radiation damage before its energy is fully absorbed. The damage, or ... Oxides are leached with a sulfuric acid or sodium carbonate solvent, while sulfates can be leached with water or sulfuric acid. Ammonium hydroxide i...
Found on http://www.britannica.com/eb/a-z/l/25

Leaching

[agriculture] 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. Leaching may also refer to the practice of applying a small...
Found on http://en.wikipedia.org/wiki/Leaching_(agriculture)

Leaching

[chemistry] Leaching is the process of extracting minerals from a solid by dissolving them in a liquid, either in nature or through an industrial process. In the chemical processing industry, leaching has a variety of commercial applications, including separation of metal from ore using acid, and sugar from beets using hot water. In a typic...
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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 occurs. Drawbacks of leaching are the highly acidic and in some cases toxic residual eff...
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Leaching

[pedology] In pedology, leaching is the loss of mineral and organic solutes due to percolation. It is a mechanism of soil formation distinct from the soil forming process of eluviation, which is the loss of mineral and organic colloids. Leached and elluviated materials tend to be lost from topsoil and deposited in subsoil. A soil horizon ac...
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Leaching

A chemical process for the extraction of valuable minerals from ore.
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Leaching

A chemical process for the extraction of valuable minerals from ore; also, a natural process by which ground waters dissolve minerals, thus leaving the rock with a smaller proportion of some of the minerals than it contained originally.
Found on http://www.libertystaruranium.com/miningexplained/mining-geology-glossary/

leaching

A process of chemical extration of minerals from ore material
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Leaching

A process which can rid soils of bad substances, like salts.
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Leaching

Another name for charcoal mellowing.
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Leaching

Another name for charcoal mellowing.
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Leaching

As water moves through soils or landfills, chemicals in the soil may dissolve in the water thereby contaminating the groundwater. This is called leaching.
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leaching

in geology, loss of soluble substances and colloids from the top layer of soil by percolating precipitation. The materials lost are carried downward ... [4 related articles]
Found on http://www.britannica.com/eb/a-z/l/25

leaching

leaching occurs when rainfall or irrigation water flushes substances and nutrients through soil. Leaching is primarily performed to remove the buildup of harmful nutrients, including salt. After leaching, it's important to fertilize your lawn with nutrients that promote growth, such as nitrogen. This can be done by applying high quality lawn fertil...
Found on https://www.pennington.com/all-products/fertilizer/resources/glossary-terms

leaching

leaching, method of extraction in which a solvent is passed through a mixture to remove some desired substance from it. A simple example is the passage of boiling water through ground coffee to dissolve and carry out the chemicals necessary for producing the beverage. Another example is the removal ...
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Leaching

Movement of water and the substances dissolved in the water (such as fertilizer) downward through the soil and away from the target area.
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Leaching

Occurs when water flushes mineral substances and nutrients out of the soil.
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Leaching

Occurs when water flushes mineral substances and nutrients out of the soil.
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Leaching

Process by which soluble materials are dissolved and carried through the soil by a percolating liquid.
Found on http://www.encyclo.co.uk/local/20096

leaching

Process by which substances are washed through or out of the soil. Fertilizers leached out of the soil drain into rivers, lakes, and ponds and cause water pollution. In tropical areas, leaching of the soil after the destruction of forests removes scarce nutrients and can lead to a dramatic loss of soil fertility. The leaching of soluble minerals in...
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Leaching

Process in which water removes and transports soil humus and inorganic nutrients in solution.
Found on http://www.physicalgeography.net/physgeoglos/l.html
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