Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Effects of Liming on Uptake to Crops of Heavy Metals in Soils amended with Industrial Sewage Sludge

하수오니 시용토양에서 작물의 중금속 흡수이행에 미치는 석회의 영향

  • Jung, Goo-Bok (National Institute of Agricultural Science and Technology, RDA) ;
  • Kim, Won-Il (National Institute of Agricultural Science and Technology, RDA) ;
  • Lee, Jong-Sik (National Institute of Agricultural Science and Technology, RDA) ;
  • Yun, Sun-Gang (National Institute of Agricultural Science and Technology, RDA)
  • 정구복 (농업과학기술원 환경생태과) ;
  • 김원일 (농업과학기술원 환경생태과) ;
  • 이종식 (농업과학기술원 환경생태과) ;
  • 윤순강 (농업과학기술원 환경생태과)
  • Published : 2002.03.31
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Abstract

The effect of lime on plant availability of heavy metals in soils amended with industrial sewage sludge (ISS) or pig manure compost (PMC) was investigated. A pot experiment with Altari radish (Raphanus sativus) was conducted. Industrial sewage sludge and Pig manure compost were added at 25 and 50 Mg/ha, and lime was added at 3 Mg/ha. Heavy metal contents of ISS treated soils after experiment were higher than those in control (NPK plot) and PMC treatment. Specially, the contents of copper, zinc, nickel and chromium in the 50 Mg/ha of ISS treated soils were higher 12$\sim$48 times than those in control. Copper, zinc, and nickel contents in Altari radish leaves cultivated at the ISS treated soil exceeded the critical levels of plant toxicity. Copper, zinc, and nickel contents in Altari radish loaves and roots cultivated at the ISS treated soil were reduced by the addition of lime. Copper, zinc, and nickel contents in Altari radish loaves were negatively correlated with soil pH after experiment. It concluded that liming would reduce the uptake of heavy metals by plants and be a temporary method of reclamation at the highly heavy metal accumulated soils by ISS.

공단 하수오니의 농경지 유입에 따른 토양의 중금속 함량과 작물체로의 중금속 흡수이행에 미치는 석회시용 효과를 조사하였다. 공단하수오니 및 돈분퇴비를 각각 25, 50 Mg/ha 시용토양에 석회를 3 Mg/ha 처리하여 알타리무를 재배 수확한 후 토양과 작물체 중의 중금속 함량을 분석하였다. 시험후 토양의 중금속 함량은 공단하수오니구에서 대조구 (NPK 처리구) 및 돈분퇴비구보다 높았으며, 특히 공단하수오니 50 Mg/ha 시용구에서는 구리, 아연, 니켈 및 크롬함량이 대조구와 비교하여 12$\sim$48배 높은 농도를 보였다. 공단하수오니 시용으로 알타리무로 흡수 이행된 구리, 아연 및 니켈 함량은 증가하여 알타리무 엽중의 농도가 식물독성 피해농도를 초과하는 수준이였다. 공단하수오니 시용토양에서 석회시용으로 알타리무 엽과 뿌리중 구리, 아연 및 니켈 함량은 크게 경감되었으며, 시험후 토양의 pH와 알타리무중 구리, 아연 및 니켈 함량과는 고도의 부의 상관을 보였다 이상의 결과에서 석회시용이 중금속이 다량 함유된 하수오니 유입으로 인한 작물의 독성피해와 중금속 흡수 이행성을 경감시킬 수 있는 일시적인 개량방법으로 이용될 수 있을 것으로 생각되었다.

Keywords

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  2. Uptake of Heavy Metals by Radish (Raphanus sativus cv. sodamaltari) from the Soils after Long-Term Application of Organic Wastes vol.46, pp.1, 2013, https://doi.org/10.7745/KJSSF.2013.46.1.065
  3. Immobilization of Heavy Metals in Sewage Sludge during Land Application Process in China: A Review vol.9, pp.11, 2017, https://doi.org/10.3390/su9112020