Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Life Cycle Assessment of Activated Carbon Production System by Using Poplar

포플러를 이용한 활성탄 제조 시스템에 대한 전과정 평가

  • Kim, Mihyung (Department of Civil and Environmental Engineering, Hannam University) ;
  • Kim, Geonha (Department of Civil and Environmental Engineering, Hannam University)
  • 김미형 (한남대학교 건설시스템공학과) ;
  • 김건하 (한남대학교 건설시스템공학과)
  • Received : 2014.09.22
  • Accepted : 2014.11.14
  • Published : 2014.11.30
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Abstract

Phytoremediation is a technology to mitigate the pollutant concentrations such as metals, pesticides, solvents, oils, or others in contaminated water and soils with plants. The plants absorb contaminants through the root and store them in the root, stems, or leaves. Rapid growth trees such as poplar are used to remove low concentrated contaminants eco-friendly and economically in a wide contaminated region. This study was practiced to evaluate an activated carbon production system by using poplar wood discarded after phytoremediation. Life cycle assessment methodology was used to analyze environmental impacts of the system, and the functional unit was one ton of harvested poplar. It was estimated that the small size rotary kiln for activated carbon production from poplar wood had an environmental benefit in optimized conditions to minimize energy consumptions. The results of an avoided environmental impact analysis show that the system contribute to reduce environmental impacts in comparison with activated carbon production from coconut shell.

식물정화공법(Phytoremediation)은 식물을 이용하여 오염된 토양 또는 폐수의 유해한 오염물질을 흡수, 제거, 안정화, 무독화 시키는 기술을 의미하며, 친환경적, 경제적인 오염정화 방안이다. 포플러는 생장이 빠른 속성수종으로써 수분과 양분을 흡수하는 능력이 우수하여 각종 오염물질을 효과적으로 흡수제거하므로, 유기오염물질, 중금속 등 유해물질 제거에 높은 효율을 보이고 있다. 본 연구에서는 식물정화공법의 부산물로 발생되는 포플러를 원료로 이용한 활성탄 제조시스템을 대상으로 전과정평가 기법에 의해 환경에 미치는 영향을 분석하고자 하였다. 최적의 탄화 및 활성화 조건에서 이동식 소규모의 로터리킬른 회전로를 사용하여 에너지소비를 최소화 하였을 때 환경편익이 가능한 것으로 추정되었다. 시스템경계확장방법을 적용하여 야자각을 원료로 한 활성탄 제조시스템의 환경영향의 회피분석결과 자원고갈을 제외한 환경영향 범주에서 마이너스 효과를 보이므로 잠재적 가능성이 있는 것으로 사료된다.

Keywords

References

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