Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Spectroscopic Characterization of Humic Substances Present in Landfill Leachates with Respect to Landfilling Age

매립 연령에 따른 침출수중에 존재하는 휴믹물질의 분광학적 특성 분석

  • Kang, Kihoon (Dept. of Civil Engineering, Korea Advanced Institute of Science and Technology) ;
  • Shin, Hyun-Sang (Dept. of Environmental Engineering, Seoul National University of Technology) ;
  • Park, Heekyung (Dept. of Civil Engineering, Korea Advanced Institute of Science and Technology)
  • 강기훈 (한국과학기술원 토목공학과) ;
  • 신현상 (서울산업대학교 환경공학과) ;
  • 박희경 (한국과학기술원 토목공학과)
  • Received : 2000.01.21
  • Accepted : 2000.03.24
  • Published : 2000.06.30
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Abstract

Humic substances present in landfill leachates were extracted and their characteristics were analyzed with respect to landfilling age as a basic study to evaluate the effect of humic substances on the transport and transformation of other pollutants in pollution plume contaminated by landfill leachate. Element analysis of the extracted humic substances were performed. The information on the functional groups of the humic substances molecules were obtained from the spectroscopic analysis using UV-visible, FT/IR, and fluorescence spectroscopy. The structural characteristics of the humic substances were also analyzed by $^1H$ and $^{13}C$ NMR spectroscopy. From the results of the analyses it was found that the structure of the humic substances present in landfill leachates was more aliphatic than aromatic relative to other common humic substances extracted from natural soils and water. The results indicate that the degree of humification of the humic substances were relatively low. The degree of humification, however, was increased as the landfilling age was increased.

매립지 침출수에 의한 지하수의 오염으로 생성되는 대수층내 오염대 내에서 휴믹물질이 다른 오염물질의 이동 및 변환에 미치는 영향을 평가하기 위한 기초연구로서 매립지의 매립년한에 따른 침출수중에 존재하는 휴믹물질을 추출하여 그 특성을 분석하였다. 추출된 휴믹물질에 대해 원소분석을 실시하였으며, 분광학적 분석으로서 자외선-가시광선, 적외선, 형광 분광분석과 $^1H$ 및 $^{13}C$ 핵자기공명 분석을 실시하였다. 침출수중에 존재하는 휴믹물질은 토양 및 수중으로 부터 추출된 휴믹물질에 비해 구조적으로는 지방족 화합물에 의한 특성이 방향족 화합물에 의한 특성에 비교하여 우세하였으며, 이로부터 침출수 휴믹물질의 휴믹화 정도가 상대적으로 낮음을 알 수 있었다. 한편 매립지의 매립년한이 증가할수록 침출수 휴믹물질의 휴믹화 정도는 증가하는 특성을 보였다.

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