Physical Properties of Activated Carbon with Coal Blend Ratios and Manufacturing Conditions

석탄배합비율과 제조공정조건에 따른 활성탄의 물성변화

  • Kim, Sang Cheol (Technology Evaluation & Research Department, Korea Institute of Construction Materials) ;
  • Park, Kyung Ai (Seoul Metropolitan Government of Health and Environment) ;
  • Lee, Seung Bum (Department of Chemical Engineering, Dankook University) ;
  • Hong, In Kwon (Department of Chemical Engineering, Dankook University)
  • Received : 1998.04.07
  • Accepted : 1998.07.08
  • Published : 1998.11.10

Abstract

This study was devoted to the manufacturing process of activated carbon(AC) using and anthracite and bituminous coals which were regarded as appropriate for AC manufacturing, and the physcial properties a AC prepared with coal blends were characterized by the ultimate and proximate analysis. Generally, as the fraction of antheracite in AC from anthracite and bituminous coal blends was increased, AC yield was increased whereas iodine value($I_2$) was decreased. Being not related to mixing ratio of coal blends, the apparent density of AC remained constant. Pore development and iodine value of AC based on coal blends(Fushun and Dandong, 75:25 wt. %) were examined, varing carbonization and steam activation conditions. These results showed that the average pore diameter of AC was below $20{\AA}$ in the activation temperature range of 850 to $900^{\circ}C$ and the iodine value was above $1000m^2/g$. When the adsorption capacity of manufactured AC was compared with commercial AC, it is found that the AC from coal blends was comparable to the commercial AC. Therefore, it was confirmed that the characteristics of manufactured AC were changed with manufacturing conditions and the ratios and types of coal blends.

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