Carbon is the most adsorbent material known to man and has been used to purify air and water for thousands of years. In fact, the use of carbon dates so far back into history that its exact origin has been impossible to document.
Historians do know that as far back as 1500 BC the ancient Egyptians were using carbon to adsorb odors from festering wounds and from within the intestinal tract or to purify their water and that carbon filters were used for ventilating vapors and gases from 17th century London sewers.
However it was the 20th century that saw the development of specially ‘activated’ granular carbon, like that used in air scrubbers | air filtration systems | air purifiers. With the introduction of poisonous gases during WW I, the military developed large scale production methods for adsorbent carbons suitable for use in gas-masks, which has led to…
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