Activated carbon (AC) was used as an adsorbent for removal of volatile organic compounds (VOCs). The purpose of this research is to study the effect of acidic treatments of activated carbons on toluene adsorption. The physicalchemical properties of activated carbons were characterized by N2 adsorption-desorption isotherms, temperatureprogrammed desorption (TPD). The adsorption amount of toluene showed an order of S-AC-10% > S-AC-5% > A-AC > AC. It was also found that acid solution pH showed a significant influence on adsorption of toluene. Because strong acid treatment increased the surface oxygen group species of activated carbon, and this group was observed to be the carboxyl acid group by TPD analysis. In addition, the toluene adsorption amount by activated carbon increased with the concentration of H2SO4 solution from 5% to 10%. Adsorption ability of activated carbon surface with toluene is thought to increase as the amount of oxygen group on AC increases.

1. 서 론
 2. 연구방법
  2.1 흡착제의 물성실험
  2.2 흡착제의 산화처리
  2.3 흡착실
 3. 결과 및 고찰
  3.1 산 처리에 따른 활성탄의 물리적 성질 변화
  3.2 산 처리에 따른 활성탄의 표면산소종의 변화
  3.3 산 처리된 활성탄의 톨루엔 흡착특성
 4. 결 론
 감사의 글
 References

• 박서현(한국산업기술시험원 환경융합기술센터) | Seo-Hyun Pak
• 김현정(한국산업기술시험원 환경융합기술센터) | Hyeon-Jeong Kim
• 전용우(한국산업기술시험원 환경융합기술센터) | Yong-Woo Jeon Corresponding author