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아연 광석과 프로판산화 미생물을 이용한 이단 고정상 반응기에서의 염소계 지방족 탄화수소 혼합물 분해 특성
Transformation Characteristics of Chlorinated Aliphatic Hydrocarbon (CAH) Mixtures in a Two-Stage Column: 1st Chemical Column Packed with Zinc Natural Ore and 2nd Biological Column Stimulated with Propane-Oxidizing Microorganisms

손봉한   (한국방송통신대학교 환경보건학과UU0001389  ); 김남희   (한국농촌공사CC0188455  ); 홍광표   (고려대학교 환경시스템공학과UU0000159  ); 윤준기   (삼성물산 기술연구소CC0102076  ); 이채영   (수원대학교 토목공학과UU0000815  ); 권수열   (한국방송통신대학교 환경보건학과UU0001389  ); 김영   (고려대학교 환경시스템공학과UU0000159  );
  • 초록

    This study was conducted to develop a combined method for remediating a Chlorinated Aliphatic Hydrocarbons (CAHs) mixtures-contaminated aquifer. The process is consist of two processes. A chemical process (1st) using natural zinc ores for reducing higher concentrations of CAH mixtures to the level at which biological process is feasible; and A biological process (2nd) using aerobic cometabolism for treating lower concentration of CAH mixtures (less than 1 mg/L). Natural zinc ore showed relatively high transformation capacity, average dehalogenation percentage, and the best economic efficiency in previously our study. To evaluate the feasibility of the process, we operated two columns in series (that is, chemical and biological columns). In the first column filled with natural zinc ore and sand, CAH mixtures were effectively transformed with more than 95% efficiency, the efficiency depends on the Empty Bed Contact Time (EBCT) and the mass of zinc ore packed. Scanning Electron Microscope (SEM), X-Ray Diffraction (XRD) analysis were performed to make sure whether natural zinc ore played an key role in the dechlorination of the CAH mixtures. The characteristics of zinc metal surface changed after exposure to CAHs due to oxidation of $Zn^0$ to $Zn^{2+}$ . In the biological column injecting propane, DO and effluent of the chemical column, only 1,1,1-TCA was cometabolically transformed. Consequently, the combined process would be effective to remediate an aquifer contaminated with high concentrations of CAH mixtures.


  • 주제어

    Clorinated aliphatic hydrocarbons .   Continuous soil column .   Dechlorination .   Zinc ore.  

  • 참고문헌 (21)

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    1. 2007 "자연광석을 이용한 염소계 지방족 탄화수소 혼합물 변환 특성" 水質保全 = Journal of Korean Society on Water Quality 23 (5): 712~722    
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