REMOVAL OF H2S, CH3SH AND (CH3)3N FROM AIR BY USE OF CHEMICALLY TREATED ACTIVATED CARBON

Removal of H//2S, CH//3SH and (CH//3)//3N, mixed with air in a concentration range from 10 to 800 ppm at 303 K, by use of activated carbon impregnated with NaOH or Na//2CO//3 (IAC) or sulfonated activated carbon (SAC) was studied to obtain the basic data useful for design of a deodorization process. For the system of IAC-H//2S or CH//3SH, the adsorption equilibrium was of rectangular type and adsorption capacity could be increased as much as about 40 to 60 times of that of original carbon. For the system of SAC-(CH//3)//3N, the adsorption equilibrium obeyed the Freundlich equation and the effect of sulfonation was much larger when the concentration of (CH//3)//3N was lower in comparison with the original carbon.