activated charcoal

American  

[ak-tuh-vayt-id chahr-kohl] / ˈæk təˌveɪt ɪd ˈtʃɑrˌkoʊl /

noun

1. activated carbon.

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activated charcoal Scientific  

/ ăk′tə-vā′tĭd /

1. Highly absorbent carbon obtained by heating granulated charcoal to expel any gases it contains, resulting in a highly porous form with a very large surface area. It is used primarily for purifying gases by adsorption, solvent recovery, or deodorization and as an antidote to certain poisons.

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Example Sentences

Researchers from the University of Cambridge used a method similar to charging a battery to instead charge activated charcoal, which is often used in household water filters.

From Science Daily • Jun. 5, 2024

This green coffee extract is passed through activated charcoal filters, which trap the caffeine molecules while allowing the flavours to pass through.

From Salon • Oct. 31, 2023

Prof Oberholster says there are some filtration techniques, like reverse osmosis, and treatments involving activated charcoal which are already used to remove bitter compounds from wine.

From BBC • Jul. 5, 2023

Their compact and effective gray blocks, each 1.9 ounces, are made mainly from coconut oil, sand, activated charcoal and fir needle oil.

From New York Times • Jul. 12, 2021

I’m gonna run out and get some activated charcoal.

From "Booked" by Kwame Alexander