Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Development of Adsorbent for Heavy Metals by Activation of the Bark

활성화 수피를 이용한 중금속 흡착제 개발

  • Park, Chang-Jin (Environment and Ecology Division, National Institute of Agricultural Science and Technology) ;
  • Yang, Jae-E. (Division of Biological Environment, Kangwon National University) ;
  • Ryu, Kyeong-Ryeol (Division of Biological Environment, Kangwon National University) ;
  • Zhang, Yong-Seon (Environment and Ecology Division, National Institute of Agricultural Science and Technology) ;
  • Kim, Won-Il (Environment and Ecology Division, National Institute of Agricultural Science and Technology)
  • 박창진 (농업과학기술원 환경생태과) ;
  • 양재의 (강원대학교 생물환경학부) ;
  • 유경열 (강원대학교 생물환경학부) ;
  • 장용선 (농업과학기술원 환경생태과) ;
  • 김원일 (농업과학기술원 환경생태과)
  • Published : 2004.12.31
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Abstract

The objective of this research was to develop the adsorbent far heavy metals by activating the bark sample. Barks from pine tree with diameters of $2{\sim}4\;mm$ were activated in the muffle furnace under a high relative humidity condition at temperatures of $600{\sim}900^{\circ}C$. The removal efficiency of the activated bark (ACTBARK) for Cu and Cd was temperature dependent showing the order of $900^{\circ}C$ > $800^{\circ}C$ > $700^{\circ}C$ > $600^{\circ}C$. The critical temperature was considered to be $900^{\circ}C$ to become an efficient adsorbent for Cu and Cd. The bark samples activated at temperatures lower than $700^{\circ}C$ showed a less removal efficiency than the crude bark. The ACTBARK activated at $900^{\circ}C$ removed more Cu and Cd from solution than the commercial activated carbon and charcoal. The ACTBARK (activated at $900^{\circ}C$) adsorbed all of the Cu and Cd in solution with concentrations less than 150 mg/L. The selectivity of the ACTBARK was in the order of Cu > Zn > Ni > Pb > Fe > Cd > Mn.

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References

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  1. Current research trends for heavy metals of agricultural soils and crop uptake in Korea vol.31, pp.1, 2012, https://doi.org/10.5338/KJEA.2012.31.1.75