Adsorption of benzene and toluene from waste gas using activated carbon activated by ZnCl 2

摘要: A series of activated carbons with high surface area were prepared from walnut shell using chemical activation ZnCl2. In this research the carbonization stage was carried out at 500°C. The performance synthesized evaluated in adsorption benzene and toluene waste gas. influence impregnation ratio on characteristics as well their capacity investigated. agent to selected range 0.5–2.0 wt/wt. characterized XRD, SEM, BET FTIR techniques. highest carbon production yield obtained 1.5 XRD analysis illustrated that peaks intensity decreased increasing showing amorphous property samples increased. SEM revealed successful pore development ratios. increased its maximum value reached 2643 m2·g−1 2/1. indicated relative amount different acidic groups a function ratio. Experimental results for showed potential employing impregnated treatment Generally, VOC adsorbed affected by physicochemical properties carbons.