leaching


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Related to leaching: Heap leaching

leach·ing

(lēch'ing),
1. Removal of the soluble constituents of a substance by running water through it.
2. Solubilization of metals, typically from poor ores, using lithotrophic bacteria.
[A.S. leccan, to wet]

leaching

[lē′ching]
removal of the soluble contents of a substance by running water or another liquid through it, leaving the insoluble portion behind.

leach·ing

(lēch'ing)
Removal of the soluble constituents of a substance by running water through it.
[A.S. leccan, to wet]

leaching

The washing or dissolving out of a substance by contact with a percolating fluid.

leaching

the process of dissolving and removing nutrients from soil, or minerals from rock, by the percolation of water. Certain bacteria are able to help in the solubilization of metals from their ores; such bacterial leaching is carried out commercially to recover metals such as copper and uranium.

leach·ing

(lēch'ing)
Removal of the soluble constituents of a substance by running water through it.
[A.S. leccan, to wet]
References in periodicals archive ?
Caption: The Carmacks project in Canada's Dawson district will pursue tank leaching in favor of heap leaching.
As inorganic acids H2SO4, HNO3 or HCl are commonly used, the undesired impurities, particularly iron, can be appreciably dissolved in the leaching process.
Treated cubes were stored and conditioned at 65 percent relative humidity and 20[degrees]C for 3 weeks prior to the leaching tests to facilitate potential fixation reactions.
Though the sealant limited leaching, UV exposure quintupled the arsenic that rain removed from sealant-treated wood.
Alfantazi, a Laurentian alumnus who spent four years at Falconbridge as a research specialist working with high acid pressure leaching technologies, says insight gained from within the industry, "allows you to clearly identify important and priority technical issues, and it really focuses and orients your research directions.
These studies include: microwave assisted ore milling, microwave assisted carbothermic reduction of metal oxides, microwave assisted mineral leaching, microwave assisted drying and microwave assisted waste management issues [19].
Eight blocks were treated with each solution to provide three blocks for leaching in water or citrate buffer, with two blocks being retained for reference.
We don't see evidence from what's been studied so far," he says, "that the arsenic is leaching out of landfills and getting into water tables or anything like that.
The EP-Toxicity and TCLP leaching results for lead and cadmium are significantly below the hazardous waste and BDAT limits.
low capital cost, * relatively low operating cost, and * relatively small inventory of cyanide leaching solution.
The efficacy of chromated copper arsenate (CCA) requires a balance between having the components soluble enough to be effective against target organisms throughout a product's service life, but also having low enough solubility to resist leaching (Lebow 1996, Hingston et al.