Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Effects of Plants, Rhizobacteria and Physicochemical Factors on the Phytoremediation of Contaminated Soil

오염 토양의 식물상 복원효율에 미치는 식물, 근권세균 및 물리.화학적 인자의 영향

  • Hong, Sun-Hwa (Department of Environmental Science and Engineering, Ewha Womans University) ;
  • Cho, Kyung-Suk (Department of Environmental Science and Engineering, Ewha Womans University)
  • 홍선화 (이화여자대학교 환경공학과) ;
  • 조경숙 (이화여자대학교 환경공학과)
  • Published : 2007.12.28
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Abstract

Phytoremediation is an economic and environmentally friendly technique to remediate contaminated-soil. In this study, the effects of plants, rhizobacteria and physicochemical factors on phytoremediation have been reviewed. For successful phytoremediation, the selection of plants is primarily important. To remediate soil contaminated with petroleum hydrocarbon, raygrass (Lolium multiflorum lam), white mustard, vetch (Vicia villosa), tall fescue (Festuca arundinacea), legumes, poplar, and Pine (Pinus densiflora) were mainly applied, and the removal efficiency of petroleum hydrocarbon were ranged 68 to 99%. Corn (Zea mays), raygrass (Lolium multiflorum lam), vetch (Vicia villosa), mustard, clover (Trifolium repens), and tall fescue (Festuca arundinacea) were used for the removal of polycyclic aromatic hydrocarbon, and their removal efficiencies were 50-98%. Rhizobacteria play significant roles for phytoremediation because they can directly participate in the degradation of contaminant as well as promoting plants growth. The following rhizobacteria were preferred for phytoremediation: Azospirillum lipoferum, Enterobactor cloacae, Azospirillum brasilense, Pseudomonas putida, Burkholderia xenovorans, Comamonas testosterone, Pseudomonas gladioli, Azotobacter chroococcum, Bacillus megaterium, and Bacillus subtilis. Pysicochemical factors such as pH, temperature, nutrient, electron acceptor, water content, organic content, type of contaminants are consequential limiting factors for phytoremediation.

토양오염을 복원하는 방법 중 식물상 복원은 식물을 이용하여 오염물을 제거하는 기술로, 환경 친화적이며, 경제적인 기술이기 때문에 많이 이용되고 있다. 이 연구에서는 식물상 복원에 있어 식물의 영향, 근권 세균과 물리화학적 제한인자에 대해 고찰하였다. 성공적인 식물상 복원을 위해서는 식물의 선택이 가장 중요하다. 유류(디젤) 분해를 위해 적용된 식물은 쥐보리(Lolium multiflorum lam), 베치(Vicia villosa), 버섯류(white mustard), 톨페스큐(Festuca arundinacea), 콩과식물(leguminosae), 포플러, 소나무(Pinus densiflora) 등이고, 유류 제거 효율은 68-99% 이었다. PAH(polycyclic aromatic hydrocarbons) 제거용으로는 옥수수(Zeo mays), 쥐보리, 베치, 버섯류, 토끼풀(Trifolium repens), 그리고 톨페스큐이 이용되었고, 50-98%의 제거 효율을 보였다. 식물의 성장을 향상시킬 뿐 만 아니라, 오염물질을 직접적으로 제거할 수 있는 근권 세균도 식물상 복원에 있어 중요한 역할을 한다. 식물상 복원에 이용된 근권 세균에는 Azospirillum lipoferum, Enterobactor cloacae, Azospirillum brasilense, Pseudomonas putida, Burkholderia xenovorans, Comamonas testosterone, Pseudomonas gladioli, Azotobacter chroococcu, Bacillus megaterium, Bacillus subtilis 등이 있다. pH, 온도, 영양물질, 최종전자수용체, 수분함량, 유기물 함량, 오염물질 종류와 물리화학적 인자도 식물상 복원에 있어 제한 요소로 작용한다.

Keywords

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