Definitions for "Leaching"
Related Terms:
Leach, Soil water, Percolate, Desalination, Total dissolved solids, Purified water, Dissolved solids, Reverse osmosis, Distilled water, Water solubility, Water soluble, Tds, Hydrophilic, Salinization, Permeate, Puddling, Desalinization, Hydrophobic, Fresh water, Saline water, Brine, Soluble, Saline soil, Saline, Hydrogel, Leachate, Saline solution, Freshwater, Water treatment, Rinse, Semi-permeable membrane, Insoluble, Capillary water, Salinisation, Impermeable, Total suspended solids, Impervious, Saturated, Precipitation, Soil moisture, Solubility, Water softener, Salinity, Percolation, Permeable, Treated water, Evapotranspiration, Turbidity, Dense non-aqueous phase liquid, Anhydrous
The process of removal or separation of soluble components from a solid by percolating water or other liquids through the solid.
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 silver alloys held together with a matrix of glasses. Solder can leach the silver to such an extent that electrical connection is no longer made. Solutions to the problem include both using silver alloys with platinum and palladium to reduce the solution rate, and providing a ‘nickel barrier’ plating on top of the original metallising. For most purposes, this barrier layer is supplied already solder plated.
Leaching - The downward transport by percolating water of minerals in a soil.
the downward transport of dissolved or suspended minerals, fertilizers, pesticides and other substances by water percolating through the soil.
The loss of nutrients, pesticides, lime, or other elements of the soil by the action of water as it percoolates through the soil profile.
Washing operation that removes a certain amount of dissolved substance(s) from a material.
Removal of valuable metals from ores by microbial action.
The action of percolating waters carrying away materials in solution or suspension.
Dissolution of a metal (e.g. silver) into molten solder from a substrate such as a component termination. Also known as scavenging.
A solution mining process to remove salt and form gas storage caverns in salt domes.
The movement of pesticides downward through soil with water.
The washing out or flushing of a soluble substance from an insoluble one. Gardeners leach soil with water when they want to remove excess salts (see Salinity). In high-rainfall areas, rain water leaches good as well as harmful substances from the soil.
A process by which soluble substances, such as organic matter, mineral salts etc., are washed out of the upper layer of a soil into a lower layer by percolating rain water.
The movement of a pesticide chemical or another substance downward through soil as a result of water movement, potentially causing contamination of groundwater resources.
The process of removal of soluble materials by the passage of water through soil.
Removal of liquid waste material from sewage by filtration through sand, gravel, tiles, stones, etc.
The process in which materials in or on the soil gradually dissolve and are carried by water seeping through the soil. It may result in the removal of valuable nutrients from the soil, or it may result in the removal of valuable nutrients from the soil, or it may carry buried wastes into groundwater, thereby contaminating it.
The process by which nutrient chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil.
A similar concept to making tea which leaches out the flavor of the tea leaves. This concept regards how water will rinse bad substances (like salt) or good ones (like nutrients) down deep into the soil or as runoff.
the gradual loss of minerals from soil by the action of water.
Downward movement of a soluble material through the soil as a result of water movement.
The removal of soluble constituents from a rock or soil by moving ground water or hydrothermal fluids.
a natural process by which chemicals and minerals are transported downwards through a soil-profile.
the downward movement of water and nutrients from the soil surface to the water table due to gravity.
Process in which various chemicals in upper layers of soil are dissolved and carried to lower layers and, in some cases, to groundwater.
the movement of materials (such as nitrate) down through the soil with water.
Process by which water removes and transports inorganic nutrients and humus in solution through soil.
The process by which chemicals are dissolved and transported through the soil by percolating water. Pesticides and nutrients from fertilizers or manures may leach from fields, areas of spills, or feedlots and thereby enter surface water, groundwater, or soil. Leaching from concentrated sources such as waste sites and loading areas vulnerable to spills can be prevented by paving or containment with a liner of relatively impermeable material designed to keep leachate inside a treatment pond, landfill, or a tailings disposal area. Liner materials include plastic and dense clay.
Process in which water removes and transports soil humus and inorganic nutrients in solution.
A process in which metal is extracted from mined ore by means of adding a soluble substance. Commonly used in gold mining.
the loss of materials caused by water carrying them deeper into the soil profile
the extraction of metals from ores using aqueous chemical solutions
The removal from the soil of materials in solution and suspension. ___________________________________________________________________________________________________
The downward movement of nutrients or salts through the soil profile in soil water. Leaching accounts for nutrient losses but can also be beneficial in ridding a soil of excess salts.
The removal or loss of nutrient elements in soil solution due to the downward movement of water.
Process by which a pesticide moves downward through the soil profile in the aqueous phase.
Losing nutrients from top soil by water draining them out.
The extraction of a soluble metallic compound from ore by dissolving the metals in a solvent.
The treatment of ores, concentrates and other metal-bearing materials by an acidic wet process that dissolves soluble minerals and recovers them into a pregnant leach solution.
The removal of excess liquid through a porous substance.
The removal of soluble soil material by percolating water.
The act of dissolving the soluble portion of a solid mixture by some solvent. An example is the dissolving of inorganic or organic contaminants from refuse in a landfill by infiltrating rain water.
a term used to describe the movement of slowly soluble constituents, present in masonry pool finishes, into the pool water. Overall water chemistry governs to what extent any leaching can occur. Normally affects the parameters of pH, total alkalinity and calcium hardness.
The washing out of soluble substances by a solvent. Usually used in connection with soil and rain.
Leaching refers to the movement of soluble components in solution from the soil by water.
A process of soil nutrient removal through the erosive movement and chemical action of water.
The process by which percolating water removes nutrients from the soil.
The dissolving and removal of soluble minerals by water from rain and snow that infiltrates downward through a soil.
The removal of salts and soluble minerals from the soil by flushing the soil with water.
blotchy glossy water soluble spots on latex paints. Usually caused by: painting in coll humid conditions. If moisture collects on fresh paint before it has thoroughly dried, leaching may appear.
Gravitational movement of water, dissolved, and colloidal substances from the surface or upper horizons to lower horizons in a soil.
The movement of liquid into another material. It usually refers to liquids that leak our of waste disposal sites and contaminate soil and water. The leached material is called leachate. Leaching is also a major soil forming process. It leads to redistribution of material within the solum and horizon differentiation.
the removal of harmful soluble salts from the plant root zone by an extra heavy application of water. The undesirable salts are carried by gravitational water to a point below or out of the root zone.
occurs when a liquid (e.g. water) passes through a substance, picking up some of the material and carrying it to other places; this can happen under ground in solid rock, or above ground through piles of material
Removal of a compound by use of a solvent.
The process by which soluble chemical components are dissolved and carried through soil by water or some other percolating liquid.
to be removed from the soil by means of liquid percolation.
the natural process by which water transports salts and other soluble materials through the soil
The process where material in the soil (such as nutrients, pesticides, etc.) are washed into lower layers of soil by the downward movement of water.
to remove soluble constituents from by the action of percolating liquid
the removal of water action of chemical elements and compounds from rocks and soil.
A process of draining of soluble salts, alkali and other constituents from soils or other media by natural percolation or abundant irrigation.
Extracting a soluble metallic compound from an ore by dissolving it in a solvent, such as water, sulfuric acid, etc. and then recovering the metal by precipitation.
The process or an instance of separating the soluble components from some material by percolation. The process or an instance of removing nutritive or harmful elements from soil by percolation.
is the process by which soluble matter is removed from soil or rock by the action of percolating water.
The downward movement of a material in solution through soil.
The use of chemical solutions to disolve minerals from an ore deposit.
1) The dissolution of soluble constituents from a rock by the natural action of percolating water 2) The removal in solution of mineral salts or organic matter from an upper to a lower soil horizon by the action of percolating water
the removal of materials (elements) in solution by the passage of water through soil.
The process by which water filters down through the soil or some other material, often carrying with it dissolved nutrients, chemicals, or other pollutants.
the passing of a liquid through material (usually soil) which removes dissolved chemicals.
The process by which soluble constituents are dissolved and filtered through the soil by a percolating fluid.
Process normally carried out on all dipped goods for removal of all the water soluble substances on the latex film.
a process used in mineral processing to recover metals from ores by dissolving the metal into a solution in contact with the crushed ore. There are different types of leaching, including high temperature acid or alkali leaching, cyanide leaching of gold and bacterial or bioleaching of sulfide minerals.
(1) The removal of soluble constituents, such as nitrates or chlorides, from soils or other material by the movement of water.(2) The removal of salts and alkali from soils by irrigation combined with drainage.(3) The removal of a liquid through a non-watertight artificial structure, conduit, or porous material by downward or lateral drainage, or both, into the surrounding permeable soil.
When solvents are applied to a paint film, solvent soluble compounds are removed and the film becomes more brittle.
The removal of dissolved chemicals from soil or addition into a water supply by the movement of a liquid (like water).
The removal of sediment by the action of a percolating liquid.
Process by which water removes chemicals from soil through chemical reactions and the downward movement of water.
The separation, selective removal, or dissolving-out of soluble constituents from a rock or orebody by the natural action of percolating water, or the extraction of soluble metals or salts from an ore by means of slowly percolating solutions.
The natural process by which salts and other soluble materials are removed from the soil by percolating water.
extraction or flushing out of dissolved or suspended materials from the soil, solid waste, or another medium by water or other liquids as they percolate down through the medium to groundwater.
the removal (or moving) of soluble organic and inorganic substances from the topsoil downward by the action of percolating water.
The process that occurs when DEHP does not bind to PVC. Over time, the DEHP may separate from the PVC and move into an intravenous solution.
Deep percolation or washing of nutrients through the soil to a depth beyond the root zone of plants.
As water moves through soils or landfills, chemicals in the soil may dissolve in the water thereby contaminating the groundwater. This is called leaching.
Leaching occurs when water, from rain, flooding or other sources, seeps into the ground into the underground water supply, dissolving with it toxic chemicals and other trace elements from the soil through wich it seeps. Groundwater near landfills and hazardous waste dumps is often highly toxic with high levels of lead, mercury etc caused due to leaching.
the downward movement of soluable compounds in soils due to significant watering and rainfall - useful in the removal of accumulated salts, undesirable in terms of needed soil nutrients; the amount of leaching is related to the drainage qualities of the soil itself; caliche is formed by the leaching of soil & water borne salts which are blocked at a certain depth by a heavy clay soil.
The removal of soluble minerals from soil by the downward movement of water.
Applying excess water or nutrient solution to wash chemicals and excess nutrients out of the root zone.
This is a common problem in sandy soils, which do not hold water well. Nutrients (and other substances) in the soil may be dissolve in water. The water, thanks to gravity, is pulled downward, carrying the dissolved nutrients with it and leaving the soil depleted. Control leaching by adding humus to the soil. The humus will slow water's downward movement and give soil organisms and plants more time to absorb the dissolved nutrients.
Washing out of soluble substances by water passing down through soil. Leaching occurs when more water falls on the soil than is lost by evaporation from the surface. Rainwater running through the soil dissolves mineral nutrients and other substances and carries them via ground water into water bodies.
(1)(2) (a) the removal of the more soluble minerals by percolating water, (b) extracting a soluble metallic compound from an ore by selectively dissolving it in a suitable solvent such as water, sulfuric acid, hydrochloric acid, cyanide, etc. (4) the extraction of soluble constituents by percolating a solvent through it. Natural or induced process. See also solubility.
A process used to remove soluble minerals by percolating solutions through low-grade oxide and sulfide ores.
the removal of soil elements or applied chemicals through percolation
the removal of a substance (such as a dyestuff) by a liquid which is in contact with the substance.
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.
The process whereby a substance, such as fertilizer, dissolves and is carried away by rain water.
The removal of salts and trace elements from soil by the downward percolation of water.
The removal from the soil in solution of the more soluble materials by percolating waters (USEPA, 1993).
The removal of soluble materials from a substance as water moves through it.
the downward transport of dissolved or suspended minerals, fertilizers and other substances by water passing through a soil or other permeable material.
Downward movement of soluble materials through a soil.
The washing of minerals out of the soil.
The removal in solution of soluble minerals and salts as water moves through the profile.
The removal of nutrients, chemicals or contaminants from the soil by water movement through the soil.
One of the weathering processes. Water from the rainfall percolates through the soil, carrying along chemical elements to rivers and oceans. As time goes by, the soil chemical composition changes from what it was originally.
The washing and cleansing process with water in the manufacturing of gloves, by which excess chemicals and/or latex protein are dissolved and washed away from the gloves.
The physical removal of nutrients in solution by drainage from the soil.
1. the removal of soluble constituents from soils or other material by percolating water. 2. the removal of salts and alkali from soils by abundant irrigation combined with drainage. 3. the disposal of a liquid through a non watertight artificial structure, conduit, or porous material by downward or lateral drainage or both, into the surrounding permeable soil. 4. the loss of soluble constituents from fruits, vegetables, or other material into water or other liquid in which the material is immersed. 5. the escaping of free moisture from a solid waste land disposal site into the surrounding environment, frequently causing odors and other nuisance conditions of public health significance. b c
washing away a bitter taste by pouring water through foods like acorn meal
the process by which material such as organic and inorganic matter is washed out of a layer of soil into a lower layer by percolating rain water.
process of dissolving, washing or draining earth materials by percolation of groundwater or other liquids.
Leaching is the mobilization and transportation of soil materials in solution.
the process by which soluble materials in the soil, such as salts, nutrients, pesticide chemicals or contaminants, are washed into a lower layer of soil or are dissolved and carried away by water.
The removal or loss of excess salts or nutrients from soil. The soil around over fertilized plants can be leached clean by large quantities of fresh water used to 'wash' the soil. Areas of extremely high rainfall sometimes lose the nutrients from the soil by natural leaching.
Occurs when water flushes mineral substances and nutrients out of the soil.
Process by which soluble materials are dissolved and carried through the soil by a percolating liquid.
the downward removal of materials in solution from the soil. Leaching fraction - the extra fraction of the amount of water needed to wet the soil that must be added to keep soil salinity below a predetermined tolerance concentration.
extracting soluble components using dissolution
Dissolving and transporting of materials by the action of percolating water.
The downward movement of a substance in solution through the soil.
The removal of soluble substances by water percolating through the soil down to the water table.
To remove a soluble substance from a material by dissolving it in a liquid, and then removing the liquid from what is left. Liquids also can "leach" into soils and aquifers.
The removal of materials from the soil through rainfall or the application of water.
The removal of materials dissolved in the soil solution caused by the movement of water down through the soil, past the root zone.
As water comes into contact with manure, nitrates and other soluble components in the manure may be dissolved into the water. The water may then carry these soluble constituents along with it as it infiltrates into the soil and moves down into the groundwater. Soils that have high water tables and rapid water percolation rates are more likely to allow contaminated water to reach the groundwater. Be careful not to store manure directly on these types of soil, and do not overapply manure to such fields.
A glove manufacturing cleansing process, in which excess chemicals and/or latex protein are dissolved and washed away from the gloves.
the dissolving of materials into water as it filters through the soil, sand, etc.
The process of extracting a mineral from plaster interiors or tannic acid from wooden hot tubs.
The movement of soluble materials from one soil zone to another by water movement in the soil profile. Excessive leaching of agrochemicals like nitrate fertilizer and herbicides can be an environmental problem.
The process by which minerals or metals are dissolved out of rock and may flow into natural water bodies.
The process by which a liquid (e.g., water) passes through a substance, picking up some of the material and carrying it to other places. Can occur underground in soil and rock, or above ground through piles of material.
To be removed or dissolved by percolation of filtration.
The removal of soluble matter from soil or other materials by percolating water.
Removal of soluble substances and nutrients from the upper layers of soil by the downward flow of water.
Applying irrigation water in excess of the soil moisture depletion level to remove salts from the root zone.
A chemical reaction betwee water and metals that allows for removal of soluble materials.
The process by which soluble substances are dissolved and transported down through the soil by recharge.
Removal of dissolvable matter from its mixture with an insoluble solid; major part occurring during mashing
Rainfall and irrigation water washes out soluble elements from the soil solution. Leached elements end up in streams, rivers and aquifers.
Dissolving out by the action of a percolating liquid.
Leaching is a process in which water runs through soil and removes the rich soil humus and inorganic nutrients (like minerals); the water dissoves the nutrients and they wash away (this solution is called the leachate).
Leaching is the process of extracting a substance from a solid by dissolving it in a liquid.
Another name for charcoal mellowing.
See 'Charcoal Mellowing'
Slow passage of a solvent through a layer of porous or crushed material in order to extract valuable components. For example, gold can be extracted by heap leaching a porous ore or pulverized tailings.
Dissolution of gold from crushed or milled material, including reclaimed slime, prior to adsorption on to activated carbon.
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A technique for improving the appearance of some flawed diamond; hydrofluoric acid is used to reach inclusions open to the surface or from which fractures or cleavages radiate to the surface; thus unsightly flaws may be "leached" white.
The movement of metal atoms from the lead base metal into liquid solder. This is prevented by nickel plating. May also refer to alloying of a gold protective plating into the solder.
Leaching is a condition where liquids ooze out of the joint between ceramic tile veneer, regardless of the veneer is grouted or not, and runs down over the tile.
The chemical process by which rocks are broken down and decomposed by the action of external agencies such as wind, rain, temperature changes, plants and bacteria.