Removal of Odor- containing Sulfur Compound, Methyl Mercaptan using Modified Activated Carbon with Various Acidic Chemicals

산으로 개질된 활성탄을 이용한 메틸 메르캅탄 악취물질 제거

  • Kim Dae Jung (Department of Chemistry, University of Utah) ;
  • Seo Seong Gyu (Department of Civil and Environmental Engineering, Yosu National University) ;
  • Kim Sang Chai (Department of Environmental Education, Mokpo National University)
  • 김대중 (유타대학교 화학과) ;
  • 서성규 (여수대학교 건설 환경공학부) ;
  • 김상채 (목포대학교 환경교육과)
  • Published : 2005.04.01

Abstract

Removal of methyl mercaptan was investigated using adsorption on virgin activated carbon (VAC) and modified activated carbons with acidic chemicals in the present work. CAC, NAC, AAC and SAC were represented as activated carbons modified with HCI, HNO$_{3}$, CH$_{3}$COOH and H$_{2}$S0$_{4}$ ,respectively The pore structures were evaluated using nitrogen isotherm. The surface properties of virgin activated carbon and modified activated carbons were characterized by EA, pH of carbon surface and acid value from Boehm titration. The modification of activated carbon with acidic chemicals resulted in a decrease in BET surface area, micropore volume and surface pH, but an increase in acid value. The order of the adsorption capacity of activated carbons was NAC>AAC>SAC>CAC>VAC, and in agreement with that of acid value of activated carbons, whereas in disagreement with that of micropore volume of activated carbons. It appeared that chemical adsorption played an important role in methyl mercaptan on modified activated carbons with acidic chemicals compared to virgin activated carbon. Modifying activated carbon with acidic chemicals enabled to significantly enhance removal of methyl mercaptan.

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