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

Some filtration techniques familiar to winemakers can help, including membrane filtration, reverse osmosis, and treatments involving activated charcoal or milk proteins, which are already used to remove bitter compounds from wine.

From Washington Post • Sep. 10, 2021

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

From "Booked" by Kwame Alexander