leaching
Definition
- Noun:
- The process of leaching: The action or process by which a soluble substance is washed out or dissolved from a solid material (such as soil, ore, or ash) by the percolation of a liquid, especially water.
Usage
- As a subject: "Leaching" describes the natural or artificial process itself.
- In technical contexts: Commonly used in environmental science, agriculture, geology, and chemistry to describe the removal of minerals, nutrients, or contaminants.
Examples
- Noun:
- The leaching of nitrates from farmland can contaminate groundwater.
- Acid rain accelerates the leaching of minerals from the soil.
- The mining process involves the leaching of metals from the ore using a chemical solution.
Advanced Usage
- "In-situ leaching": A mining process where a leaching solution is pumped into a deposit to dissolve minerals, which are then pumped to the surface.
- In-situ leaching is often used for uranium extraction.
- "Selective leaching": A corrosion process where one element is preferentially removed from an alloy.
- The dezincification of brass is a common example of selective leaching.
Variants and Related Words
- Leach (verb): To lose or cause a substance to be removed by the process of leaching.
- Fertilizers can leach into rivers.
- The heavy rains leached nutrients from the topsoil.
- Leachate (noun): The liquid that has percolated through a solid and leached out some of its constituents.
- The landfill must manage its toxic leachate.
Synonyms
- Extraction: The action of taking out something, especially using effort or force. (More general; leaching is a specific type of extraction using a liquid.)
- Percolation: The process of a liquid moving slowly through a porous substance. (Describes the movement; leaching is the combined process of percolation and dissolution.)
- Eluviation: The lateral or downward movement of dissolved or suspended material within soil. (A specific geological/soil science term.)
Related Phrases
- "Leach out" (phrasal verb): To be removed by the process of leaching.
- Over time, the salts will leach out of the bricks.
- "Leach away" (phrasal verb): To be gradually removed or lost by leaching.
- The soil's fertility leached away after years of intensive farming.
Noun
-
the process of leaching
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