The activated carbon was prepared from waste citrus peels using NaOH. With the increase of NaOH ratio, iodine adsorptivity and specific surface area of the activated carbon prepared were increased, but activation yield was decreased. The optimal condition of activation was at 300% NaOH and 700℃ for 1.5 hr. For the activated carbon produced under optimal condition, iodine adsorptivity was 1,006 mg/g, specific surface area was 1,356 m2/g, and average pore diameter was 20～25Å. From the adsorption experiment for benzene vapor in fixed bed reactor, it was found that the adsorption capacity of activated carbon prepared from waste citrus peel was higher than that of activated carbon purchased from Calgon company. This result implied that the activated carbon prepared from waste citrus peel could be used for gas phase adsorption.

• 강경호(부경대학교 응용화학공학부) | Kyung Ho Kang
• 감상규(부경대학교 응용화학공학부) | Sang Kyu Kam
• 이송우(제주대학교 토목환경공학) | Song Woo Lee
• 이민규(제주대학교 토목환경공학) | Min Gyu Lee Corresponding Author