Adsorption of Chromium by Heat-treated Microporous Carbon

열처리 다공성탄소를 통한 크롬(Cr+6)흡착

  • You, Sang-Hee (Division of Chemical Engineering, Sunmoon University) ;
  • Kim, Hak-Soo (Division of Chemical Engineering, Sunmoon University) ;
  • Kim, Hak-Hee (Division of Chemical Engineering, Sunmoon University)
  • 유상희 (선문대학교 공과대학 화학공학부) ;
  • 김학수 (선문대학교 공과대학 화학공학부) ;
  • 김학희 (선문대학교 공과대학 화학공학부)
  • Received : 1997.03.21
  • Accepted : 1997.06.18
  • Published : 1997.08.10

Abstract

This study was conducted to increase the adorption capacity of microporous carbon which is widely used as an adsorbent. After increasing the adsorption capacity of microporous carbon by heat-treatment, chromium($Cr^{+6}$) solution, which is the one of hazardous heavy metals, was selectively adsorbed on microporous carbon. Optimum temperature range for the heat-treatment of microporous carbon was $340{\sim}350^{\circ}C$, and the average specific surface area was measured as $1380m^2/g$ by BET (Brunauer-Emmett-Teller) method. The weight loss was about 10 percents during the heating to optimum temperature. However, It became a qualitative adsorbent due to a larger specific surface area. Removal of chromium($Cr^{+6}$) in solution by heat-treated microporous carbon was successfully carried out.

Keywords

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