Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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A Study on the Thermal Adsorption and Desorption Characteristics of Industrial Odorants using Activated Carbon

활성탄을 이용한 산업체 악취물질의 열적 흡탈착 연구

  • Kim, Joo Yeon (Department of Applied Chemistry and Biological Engineering, Chungnam National University) ;
  • Rhee, Young Woo (Graduate School of Green Energy Technology, Chungnam National University) ;
  • Han, Mun Hee (Graduate School of Green Energy Technology, Chungnam National University)
  • 김주연 (충남대학교 바이오응용화학과) ;
  • 이영우 (충남대학교 녹색에너지기술전문대학원) ;
  • 한문희 (충남대학교 녹색에너지기술전문대학원)
  • Received : 2011.11.22
  • Accepted : 2012.01.25
  • Published : 2012.06.01
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Abstract

Desorption reaction characteristics of the commercial activated carbons which were used for the removal of industrial odorants were investigated. BET specific surface area was analyzed to investigate the chemicophysical property of activated carbon. Adsorptivity of activated carbon was estimated by iodine number. Thermogravimetric analyzer (TGA) was used to investigate the desorption characteristics. Activation energies and reaction orders for reaction characteristics according to adsorption and desorption of activated carbons were estimated by employing the Friedman method and Freeman-Carroll method. Adsorptivity of reprocessed activated carbons were significantly lower than that of fresh activated carbons. In this study, it was found that the activation energies were 15.9~23.4 kJ/mol in Friedman method and 22.7~33.8 kJ/mol in Freeman-Carroll method.

활성탄을 이용한 산업체 악취물질 제거 특성을 규명하기 위하여 일반적으로 사용되는 상업용 활성탄의 탈착반응 특성을 조사하였다. 활성탄의 물리 화학적 특성을 조사하기 위해 BET 비표면적을 분석하였으며, 활성탄의 흡착력을 평가하기 위해 요오드가를 측정하였다. 활성탄에 흡착된 악취물질의 탈착반응특성 평가를 위해 열중량분석기(Thermogravimetric Analyzer; TGA)를 사용하였다. 활성탄의 흡 탈착에 따른 반응특성을 알아보기 위해 Friedman 법과 Freeman-Carroll 법을 이용하여 활성화에너지와 반응차수를 계산하였다. 활성탄은 신탄일 때 보다 재생탄일 때 흡착능력이 현저히 떨어졌으며, Friedman 법을 이용하여 활성화 에너지를 계산한 결과 15.9~23.4 kJ/mol, Freeman-Carroll 법을 이용하여 계산한 결과 22.7~33.8 kJ/mol로 나타났다.

Keywords

Acknowledgement

Supported by : 충남대학교

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