In situ leaching (ISL), solution mining, or in situ recovery (ISR) involves dissolving uranium in the ground and pumping the solution to the surface where the minerals can be recovered. Information from the World Nuclear Association, the global private-sector organization that provides information on nuclear power, nuclear energy, and the role of nuclear in sustainable development.

Leaching ditch or stream running through a farm field is the movement of contaminants, such as water-soluble pesticides or fertilizers, carried by water 

Berden, M.; Sveriges Lantbruksuniv., Uppsala  In the current work, a leaching process using CO 2-saturated water is attempted of the dross residue, toward the synthesis of AlON from the leach residues. Leaching reactor. Leaching reactor ∅ 3000 mm. Height: 6,5 m.

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Such leached-out contaminants affect surface and subsurface water contamination. Leaching is actually two important actions occurring simultaneously: (1) chemical interactions with surfaces and (2) physical movement of water. As the water passes through the rock and soil, it interacts with the surfaces of the materials. Compounds on the surface of minerals can be become dissolved. Leaching, in geology, loss of soluble substances and colloids from the top layer of soil by percolating precipitation. The materials lost are carried downward (eluviated) and are generally redeposited (illuviated) in a lower layer. This transport results in a porous and open top layer and a dense, compact lower layer.

Leaching is the process by which inorganic - , organic contaminants or radionuclides are released from the solid phase into the waterphase under the influence 

Leaching also leaves behind manganese, quartz, aluminum and hydroxides of iron, forming a type of soil called laterite. When the residual materials accumulate and are redeposited in the lower layer of the soil, they may coalesce and form tough and impermeable layers called duricrusts. Leaching can be defined as “the dissolution of metals, solids, and chemicals into drinking water” (Symons et al, 2000). Leaching can result in elevated levels of metals, organic contaminants, or asbestos in water consumed at the tap.

Leaching of potted plants. Leaching in plants can happen in potting containers. Once the chemicals have drained down through the soil, they can leave a crust of soluble salts on the surface, which makes it hard for the soil to absorb water. Removing this crust with water is the other type of leaching.

In humid climates, some nutrient leaching occurs even under natural vegetation, but agricultural activities can greatly increase leaching losses (Havlin et al., 1999). Soil and climatic factors that influence nutrient leaching Leaching. The removal of a soluble fraction, in the form of a solution, from an insoluble, permeable solid with which it is associated. The separation usually involves selective dissolving, with or without diffusion, but in the extreme case of simple washing it consists merely of the displacement (with some mixing) of one interstitial liquid by another with which it is miscible.

Such leached-out contaminants affect surface and subsurface water contamination. Leaching is actually two important actions occurring simultaneously: (1) chemical interactions with surfaces and (2) physical movement of water. As the water passes through the rock and soil, it interacts with the surfaces of the materials. Compounds on the surface of minerals can be become dissolved. Leaching, in geology, loss of soluble substances and colloids from the top layer of soil by percolating precipitation. The materials lost are carried downward (eluviated) and are generally redeposited (illuviated) in a lower layer. This transport results in a porous and open top layer and a dense, compact lower layer.
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Efficient leaching of uranium from ore requires tight dosing of sulfuric acid via pH measurement. But process conditions make accurate pH determination difficult. Nitrogen leaching following clear-cutting and soil scarification at a Scots pine site - A modelling study of a fertilization experiment · M. O. R. George | · L. J. Hansson |  The alkaline leaching, the purification of sodium metasilicate solution and the effect of impurities on the precipitation of amorphous silica under the conditions of  av J Lehtola · 2017 — In this thesis, the leaching of metals from fly ash/waste gas purification dust (WGPD) from an incinerator in Finland was investigated. The focus  av M Berden · 1994 · Citerat av 11 — Ion leaching and soil acidification in a forest haplic podzol: effects of nitrogen application and clear-cutting [1994]. Berden, M.; Sveriges Lantbruksuniv., Uppsala  In the current work, a leaching process using CO 2-saturated water is attempted of the dross residue, toward the synthesis of AlON from the leach residues.

Height: 6,5 m. Customer: Freeport Cobalt Oy. Kokkola, Finland 2019.
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This work consisted of preparation and acid leaching of a large sample from the Company's Clayton Valley Lithium Project and was accomplished at Continental 

Nitrogen leaching following clear-cutting and soil scarification at a Scots pine site - A modelling study of a fertilization experiment · M. O. R. George | · L. J. Hansson |  The alkaline leaching, the purification of sodium metasilicate solution and the effect of impurities on the precipitation of amorphous silica under the conditions of  av J Lehtola · 2017 — In this thesis, the leaching of metals from fly ash/waste gas purification dust (WGPD) from an incinerator in Finland was investigated. The focus  av M Berden · 1994 · Citerat av 11 — Ion leaching and soil acidification in a forest haplic podzol: effects of nitrogen application and clear-cutting [1994]. Berden, M.; Sveriges Lantbruksuniv., Uppsala  In the current work, a leaching process using CO 2-saturated water is attempted of the dross residue, toward the synthesis of AlON from the leach residues. Leaching reactor. Leaching reactor ∅ 3000 mm. Height: 6,5 m. Customer: Freeport Cobalt Oy. Kokkola, Finland 2019.