Research and manufacture toxic gas filter materials on the basis of activated carbon impregnated with additives used in the manufacture of fire escape masks

Abstract

This paper presents the results of research and fabrication of a layer of material that adsorbs some toxic gases that stimulate acidic respiration and the smoke and dust generated by the fire. Methods used: SEM- EDS; determining the BET surface area; the protection time with benzene and HCl vapor on the dynamic adsorption device DPC5... The results showed that the additively impregnated activated carbon cloth filter material has a specific surface area in BET of 697 m² /g, has a protection time against benzene vapor of 34 minutes; protection time with HCl acid vapor is 33 minutes and the ability to filter smoke particles reached 94%. The filter material made from coconut shell activated carbon has a surface area calculated according to BET being 664 m²/g, has a protection time with benzene vapor (L= 5 cm, Co = 18 mg/L) of 56 minutes; protection time with HCl acid vapor (L= 5 cm, Co= 1.1 mg/L) is 280 minutes. Construction of Xylop curve determines the ability to filter benzene vapor and the ability to filter HCl acid vapor shows. This material has potential for the use in the manufacture of personal respiratory protection and environmental remediation.