leaching

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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]

Farlex Partner Medical Dictionary © Farlex 2012

leach·ing

(lēch'ing)

Removal of the soluble constituents of a substance by running water through it.

[A.S. leccan, to wet]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

leaching

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

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

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.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

leach·ing

(lēch'ing)

Removal of the soluble constituents of a substance by running water through it.

[A.S. leccan, to wet]

Medical Dictionary for the Dental Professions © Farlex 2012

References in periodicals archive ?

The mineral leaching rate, which indicates the extent to which a metal is leached, represents one of the criteria for the leaching processes of various metals.

Aggregate Evolution Mechanism during Ion-Adsorption Rare Earth Ore Leaching

Otherwise, the effect of the oxidants on the uranium leaching was studied as well.

Study on the Oxidative Leaching of Uranium from the Lignite in the C[O.sub.3.sup.2-]/HC[O.sub.3.sup.-] System

Chemical leaching tests were conducted using analytical reagent grade citric, oxalic, malic and tartaric acid in concentration of 0.05% (w/v), 0.1% (w/v), 0.5% (w/v) and 1% (w/v) with 1% (w/v) of black shale (ore suspension).

Bioavailability of Aluminum from Black Shale Using Acidic Metabolites of Heterotrophs

A simulated rainfall leaching solution was generated using deionized water, with pH control using a volume ratio of 6 : 1 (H2SO4 and HNO3) for acid-rain simulation, using NaOH solution to adjust for alkaline conditions.

Research on the Characteristics and Mechanism of the Cumulative Release of Antimony from an Antimony Smelting Slag Stacking Area under Rainfall Leaching

In this connection different methods are developed: mineral beneficiation (mechanical, physical and physiochemical) and extractive metallurgy (Pyrometallurgical and hydrometallurgical), to process these powders with the aim of leaching the valuable metals [13, 14].

Effect of Acid Treatment on the Recovery of Valuable Metals from Steel Plant Exhaust

Leaching of nitrate from applied fertilizers is considered as the main source of pollution of groundwater underlying flooded rice fields.

The effect of urea fertilizer quantity and splitting on nitrate losses during rice growth season

"The relatively short leaching time has the potential to require a significantly smaller processing plant and higher throughput compared to a traditional inorganic acid plant and this is likely to improve the cost dynamics for tropical nickel laterite deposits considerably," said Resource Mining Corporation Managing Director Warwick Davies.

Resource Mining Corporation Limited (ASX:RMI) Announces Efficiency Improvements for Organic Acid Leach Process

Several galena leaching process have been investigated, including processing using ferric chloride, ferric sulfate, nitric acid and ammonium acelate solutions.

The producing of lead and elemental sulfur by new technologies from galenite ores

Other possible mechanism of leaching is metal dissolution by galvanic interaction between different mineral phases.

Role of galvanic interaction in selective leaching of nickel from copper flotation concentrate

Also solid residue after leaching was analyzed by this method.

Aluminium complex in coal

But since copper is highly reactive to acidic foods, such cookware is usually lined with tin or stainless steel to minimize leaching. Also, copper needs frequent polishing to retain is brilliant luster, although it will continue to work just fine with regular cleaning after use.