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Updated: Jul 2, 2026

Deposition of Porous Sorbents on Fabric Supports
Published on: June 12, 2018
Non-carcinogenic carbon sorbents for respiratory protection
Radoslaw Szmigielski1, Stefan Zietek, Andrzej Swiatkowski
1Military Institute of Chemistry and Radiometry, 00-910 Warsaw, Poland.
Abstract:
Activated carbons impregnated with compounds of chromium, copper and silver (Cr-Cu-Ag) are widely used for removing toxic substances from air, mainly in respiratory protection for industrial and military applications. Toxicological and epidemiological studies have shown chromium (especially hexavalent Cr) to have carcinogenic properties. Hence, research has been launched to develop a new adsorption-catalytic complex without chromium, which is intended to replace the activated carbon-catalyst (Cr-Cu-Ag) system. In this work activated carbon obtained from plum stones as carrier and molybdenum, copper and silver salts as impregnates were studied. The porous structure of the carbon carrier was investigated using low temperature nitrogen adsorption. Cyanogen chloride breakthrough dynamics was analyzed in order to characterize the protection properties. Studies on the substitution of chromium by non-carcinogenic metals will be continued.
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