• Title/Summary/Keyword: soil environment

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토양세척공법의 현장 적용을 통한 유류오염토양정화

  • 박인선;조종수;권오석;김영우;김석훈
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2003.09a
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    • pp.148-151
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    • 2003
  • Soil washing was applied as a supplementary step of soil remediation at a petroleum oil contaminated site. A soil washing system was designed, assembled, and operated at the site. A field screening method with PetroFlagTM was adopted at the site to find the exact boundary of contaminated area as soil excavation progressed and to verify the concentration of treated soil. The system operation showed the cleanup efficiency of 90% at the compatible cost compared to other methods.

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Soil Washing Potential of Biosurfactant in Soil Remediation (Biosurfactant를 이용한 환경수복에서의 토양세척능)

  • 최영국;김민길;이수복;이가연;이대희;권수한
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 1999.10a
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    • pp.95-98
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    • 1999
  • The goal of present study is to evaluate the potential of soil washing for removing metal contaminants from a contaminated soil. Remediation of a soil contaminated with copper, cadmium and phenol were performed by a soil washing using a biosurfactant. The removal of copper, cadmium and phenol from soil (sandy, kaoline, mixed one) was evaluated as a function of biosurfactant (wt %) concentration in the batch process. The results showed that overall rejection coefficient for copper, cadmium and phenol were grater than 50 %, 25 %, respectively.

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Fallow Cover Crop Species and Nitrogen Rate of Fertigated Solution on Cucumber Yield and Soil Sustainability in Greenhouse Condition

  • Lee, Seong Eun;Park, Jin Myeon;Noh, Jae Seung;Lim, Tae Jun
    • Korean Journal of Soil Science and Fertilizer
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    • v.47 no.1
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    • pp.23-27
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    • 2014
  • Nutrient accumulation in surface soil has become a serious problem for cucumber production in greenhouse. However, still in many cases, soil management practices are only focused on maintaining crop yield, regardless of sustainability related with soil chemical properties. This study was conducted to propose a sustainable soil management practice by investigating the impact of cover crop species and nitrogen rate of fertigated solution on cucumber yield and soil chemical properties in greenhouse condition. Rye and hairy vetch were tested as a fallow cover crop, and each amount of urea (1/2, 3/4, 1 times of N fertilizer recommendations), determined by soil testing result, was supplied in fertigation plots as an additional nitrogen source. The result showed that the yield of cucumber was higher in rye treatment than control and hairy vetch treatment. In addition, rye effectively reduced EC and accumulated nutrients from the soil. Meanwhile, N concentration of fertigated solution showed no significant effect on the growth and yield of cucumber. Consequently, these results suggest that it is desirable to choose rye as a fallow catch crop for sustainable cucumber production in greenhouse.