| Activated Carbon Fiber(ACF), a new emerged porous absorbent, hasattracted increasing attention due to its remarkable advantages:extraordingly large specific surface area, enormous adsorptivity, simplerpore structure, fast adsorption rate and its ease of handing. In airpurification, its unique characteristics have stimulated broader applicationand faster development.In this paper, the dynamic adsorption properties of activated carbonfiber (ACF), using toluene as adsorption material and viscose-basedactivated carbon fiber (VACF) as adsorption reagent, influenced byairflow and toluene concentration, were investigated. Also the influenceof adsorption heat on dynamic adsorption mechanism in adsorptionprocess was deeply analyzed. Based On the study of the adsorptioncapacity of VACF to different organic contaminant, the relationshipbetween adsorption capacity of VACF and the polarity of adsorbedmaterial can be found. The larger the polarity of organic materialadsorbed by VACF, the longer the time to reach saturation adsorption istaken. And the capacity of saturation adsorption of VACF to organic contaminant with larger polarity is bigger.Phosphoric acid used as an activator, the effect of dimethyl sulfideadsorbed statically by VACF prepared under different activatedcondition were investigated. The experimental results indicate that theyield ratio of ACF is lower under higher activated temperature, andadsorption ability to dimethyl sulfide becomes better. There isn't obviousdifference in adsorption ability of dimethyl sulfide after the activated timeexceeds 1h. The absorbing effect of VACF on dimethyl sulfide can reachbest when the concentration of the activator is 1:3(phosphoric acid: waterin terms of volume), and the immersion time is 10h. It is also found thatdeposition of metal compound in the micropores of VACF enhancesdimethyl sulfide adsorption capacity greatly.
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