activated carbon
1
4.1
- noun
- /ˈæktɪveɪtɪd ˈkɑrbən/
- Specialized
:
carbón activado
- For removing H2S from gas streams, activated carbon is the preferred adsorbent due to its high retentivity for H2S.
- activated carbon filter
- granular activated carbon
- activated carbon filtration
You can make activated carbon for filters.
- You can make activated carbon for filters.
- And then we would filter it, use an activated carbon and various other stuff, add some other chemicals.
Examples
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For example, the Remival company uses activated carbon in its incineration plant in Reims for that purpose.
Academic text (2000) -
You can make activated carbon for filters.
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It's not normally treated with activated carbon, which could bind to to this to these chemicals.
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Both virgin and partially used activated carbon may be tested.
Academic text (1997) -
Layers of sand and granular activated carbon then filter out any remaining particles.
Academic text (2003) -
The filtration system uses activated carbon to remove impurities from the water.
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Doctors recommend using activated carbon to treat certain types of poisoning.
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The aquarium's filtration system includes an activated carbon filter to improve water quality.
Synonyms
1
4.1
A black material made from carbon with many tiny holes that soaks up poisons and impurities
How Adsorptive
Surface Forms
Morphology
The phrase is compositionally built: 'activated' (made more reactive/treated) modifies 'carbon' (the element/material), so a B1 learner who knows both words can infer it is a form of carbon that has been activated or processed. Although the detailed technical sense (porous surface, adsorption use) is domain-specific, the core meaning 'carbon that has been activated' follows a regular adjective+noun pattern and is therefore transparent.
Etymology
Activated carbon is named for the way the carbon is treated: the word activated means the carbon has been treated so it has many tiny holes and a much larger surface, and carbon is the charcoal-like material. This makes it act like a strong sponge that can 'hold' or 'remove' poisons, smells, and other impurities.