Journal of Korean Society of Occupational and Environmental Hygiene (한국산업보건학회지)

Korean Industrial Hygiene Association (한국산업보건학회)
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Effects of Surface-Treatment by Zinc Salts on Breakthrough and Adsorption Capacity of Toluene in Coconut Activated Carbon Tubes

아연염에 의한 활성탄의 표면처리가 톨루엔의 활성탄관 파괴현상과 포집능력에 미치는 영향

  • Lee, Jin-Heon (Department of Industrial Health, College of Health Sciences, Inje University) ;
  • Han, Don-Hee (Department of Industrial Health, College of Health Sciences, Inje University) ;
  • Kim, Young-Gyu (Department of Environmental Engineering, Hanseo University) ;
  • Son, Bu-Soon (Department of Environmental Health Science, Soonchunhyang University) ;
  • Chung, Moon-Ho (Department of Environmental Health Science, Graduate School, Seoul National University)
  • 이진현 (인제대학교 보건대학 산업보건학과) ;
  • 한돈희 (인제대학교 보건대학 산업보건학과) ;
  • 김영규 (한서대학교 공과대학 환경공학과) ;
  • 손부순 (순천향대학교 자연과학대학 환경보건학과) ;
  • 정문호 (서울대학교 보건대학원 환경보건학과)
  • Published : 1995.11.10
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Abstract

The purpose of this study was to determine the effects of surface-treatment by zinc salts on break-through and adsorption capacity of toluene. Firstly, the coconut activated carbon treated the surface with zinc salts, were exposed by the spike sample(toluene, 69.02ppm, $260.1mg/m^3$), and then the effects of zinc salts were examined by using the gas adsorption kinetics. The results obtained were as follows : 1) BET(Brumaure Emmett Teller) surface area were $954.4m^3/g$ in coconut activated carbon treated with 0.0001 N $Zn(NO_3)_3$ $6H_2O$, and $830.3m^2/g$ in coconut activated carbon treated with 0.0001 N $ZnCl_2$. 2) Migration was decreased in coconut activated carbon treated with the thin level of zinc salts. 3) Breakthrough volume were 73.07 L in coconut activated carbon treated with 0.0001 N $Zn(NO_3)_3$ $6H_2O$, and 72.76 L in charcoal treated with 0.0001 N $ZnCl_2$. 4) ${\tau}$ values(the time required for 50% breakthrough) were 1046.1 min in coconut activated carbon treated with 0.0001 N $ZnCl_2$ and 921.2 min in coconut activated carbon treated with 0.0001 N $Zn(NO_3)_3$ $6H_2O$. 5) Maximum adsorption capacity was 53.9 mg/tube in coconut activated carbon treated with 0.0001 N $ZnCl_2$ and 47.4 mg/tube in coconut activated carbon treated with 0.0001 N $Zn(NO_3)_3$ $6H_2O$. In conclusion, the coconut activated carbon treated the surface with the thin concentration of zinc salts, decreased the breakthrough and increased the BET surface area and the adsorption capacity in case of sampling airborne toluene.

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