Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Preparation of Activated Carbon from Waste Citrus Peels by ZnCl2

ZnCl2를 이용하여 폐감귤박으로부터 활성탄 제조

  • Kang, Kyung-Ho (Division of Civil & Environmental Engineering, Cheju National University) ;
  • Kam, Sang-Kyu (Division of Civil & Environmental Engineering, Cheju National University) ;
  • Lee, Min-Gyu (Division of Applied Chemical Engineering, Pukyong National University)
  • 강경호 (제주대학교 토목환경공학) ;
  • 감상규 (제주대학교 토목환경공학) ;
  • 이민규 (부경대학교 응용화학공학부)
  • Published : 2007.09.30
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Abstract

Activated carbon was prepared from waste citrus peels by chemical activation with $ZnCl_2$. The optimal condition of carbonization was at $300^{\circ}C$ for 1.5 hr. Activation experiments with carbonized samples prepared at optimal carboniztion condition were carried out under various conditions such as activation temperature of 400 to $900^{\circ}C$, activation time of 0.5 to 2.0 hr, and $ZnCl_2$ ratio of 100 to 300%. In order to investigate the physical properties of the activated carbons prepared, iodine adsorptivities and specific surface areas were measured and their morphologies were observed from scanning electron microscopy. As $ZnCl_2$ ratio increased, activation yield decreased, while iodine adsorptivity and specific surface area increased. The optimal condition of activation was at 300% $ZnCl_2$ ratio and $300^{\circ}C$ for 1.5 hr, and then iodine adsorptivity and specific surface area was measured as about 862 mg/g and $756m^2/g$, respectively. SEM photography showed that the surface morphology was changed and many active pore were produced by chemical activation.

Keywords

References

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