Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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The Application of Dual Function Organoclay on Remediation of Toxic Metals and Organic Compounds in Soil-Water System

양친매성 유기점토를 이용한 중금속과 유기 오염물질 동시제거 기술

  • Ok, Yong-Sik (Division of Environmental Sciences and Ecological Engineering, College of Life and Environmental Sciences, Korea University) ;
  • Lim, Soo-Kil (Division of Environmental Sciences and Ecological Engineering, College of Life and Environmental Sciences, Korea University) ;
  • Kim, Jeong-Gyu (Division of Environmental Sciences and Ecological Engineering, College of Life and Environmental Sciences, Korea University)
  • 옥용식 (고려대학교 생명환경과학대학 환경생태공학부) ;
  • 임수길 (고려대학교 생명환경과학대학 환경생태공학부) ;
  • 김정규 (고려대학교 생명환경과학대학 환경생태공학부)
  • Published : 2003.09.30
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Abstract

Although clay can sorb significant amounts of inorganic contaminants from soils and wastewater, the hydration of exchangeable cations in clay minerals makes it hydrophilic at the clay mineral surfaces and interlayers. Thus, natural clays are often ineffective in complexing and stabilizing toxic organic contaminants in soils and groundwater environment. But, substituting these hydrated cations with cationic surfactant such as QAC(Quaternary ammonium Compound) can change the natural clay from hydrophilic to hydropobic. Furthermore functionalized organoclay can act as a powerful dual function sorbent for both toxic metals and organic compounds. It also can be used as landfill clay liners, slurry walls, nano-composite materials, petroleum tank farms, waste treatment, and filter systems. To use this modified clay minerals effectively, it is required to understand the fundamental chemistry of organoclay, synthetic procedures, its engineering application, bioavailability of sorbed ion-clay complex, and potential risk of organoclay. In this review, we investigate the use, application and historical background of the organoclay in remediation technology. The state-of-the-art of organoclay research is also discussed. Finally, we suggest some future implications of organoclay in environmental research.

Keywords

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