Journal of Soil and Groundwater Environment (한국지하수토양환경학회지:지하수토양환경)

Korean Society of Soil and Groundwater Environment (한국지하수토양환경학회)
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Effects of Organic Amendments on Heavy Mineral Oil Biodegradation

중질유 오염토양의 생물학적 처리에 있어 amendments의 효과

  • Lee, Sang-Hwan (Office of Environmental Geology, Korea Rural Community and Agricultural Corporation) ;
  • Kim, Eul-Young (Office of Environmental Geology, Korea Rural Community and Agricultural Corporation) ;
  • Choi, Ho-Jin (Rural Research Institute, Korea Rural Community and Agricultural Corporation)
  • 이상환 (한국농촌공사 환경지질사업처) ;
  • 김을영 (한국농촌공사 환경지질사업처) ;
  • 최호진 (한국농촌공사 농어촌연구원)
  • Published : 2007.10.31
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Abstract

To examine the effects of amendments on heavy mineral oil degradation, a pilot scale experiment was conducted for over 105days. During the experiment, soil samples were collected and analyzed periodically for the determination of residual hydrocarbon and microbial activities. At the end of the experiment, the initial level of contamination ($6,205{\pm}173mgkg^{-1}$) was reduced by $33{\sim}45%$ in the amendment amended soil; whereas only 8% of the hydrocarbon was eliminated in the non-amended soil. Heavy mineral oil degradation was much faster and more complete in compost amended soils. Enhanced dissipation of heavy mineral oil in compost amended soil might be derived from increased microbial activities (respiration, microbial biomass-C) and soil enzyme activity(lipase, dehydrogenase, and FDA hydrolase) were strongly correlated with heavy mineral oil biodegradaton (P < 0.01).

중질유로 오염된 토양의 생물학적 정화에 있어 amendment의 처리효과를 보고자 포장에서 pilot 규모로 105일간 실험을 수행하였다. 실험기간 중 주기적으로 토양시료를 채취하여 유류성분과 생물학적 활성과 관련된 분석을 수행하였는데 퇴비의 처리구들에서 쌀겨+무기양분처리구에 비하여 유류성분의 분해활성이 현저하게 증가함을 확인할 수 있었다. 105일 경과 후 amendment 처리구들에서는 초기농도 $6,205{\pm}173mgkg^{-1}$의 $33{\sim}45%$가 소실된 반면 무처리구에서는 8%만이 분해된 것으로 나타났다. 퇴비처리구들에서 무처리구 및 쌀겨처리구에 비해서 높은 중질유 분해활성을 관찰할 수 있었는데 실험기간 중 모니터링한 생물학적 지표들 중 soil respiration, dehydrogenase, lipase, urease 등의 효소활성이 쌀겨처리구에 비해 현저하게 높은 활성이 관찰되었고 이들 미생물학적 지표들과 중질유의 분해정도 사이에는 높은 상관관계가 존재하였다(p < 0.01).

Keywords

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