Journal of the Mineralogical Society of Korea (한국광물학회지)

The Mineralogical Society of Korea (한국광물학회)
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The Characterization of Pyrophyllite Based Ceramic Reactive Media for Permeable Reactive Barriers

투수성반응벽체 적용을 위한 납석광물 기반 세라믹 반응매질의 특성평가

  • Cho, Kanghee (Research Institute of Agriculture and Life Sciences, Seoul National University) ;
  • Kim, Hyunsoo (Dept. of Energy and Resource Engineering, Chosun University) ;
  • Choi, Nag-Choul (Research Institute of Agriculture and Life Sciences, Seoul National University) ;
  • Park, Cheon-Young (Dept. of Energy and Resource Engineering, Chosun University)
  • 조강희 (서울대학교 농업생명과학연구원) ;
  • 김현수 (조선대학교 에너지.자원공학과) ;
  • 최낙철 (서울대학교 농업생명과학연구원) ;
  • 박천영 (조선대학교 에너지.자원공학과)
  • Received : 2018.09.28
  • Accepted : 2018.11.15
  • Published : 2018.12.31
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Abstract

In this work, we have prepared the reactive media with the pyrophyllite based using ceramic extrusion process. The characteristics of pyrophyllite were analyzed using XRD, XRF, DSC-TGA and Zeta-potential analysis. The study of pyrophyllite based ceramic reactive media were conducted under various roasting temperature (500 to $1,300^{\circ}C$) conditions. With increasing the roasting temperature, strength was increased but BET surface area was decreased. Thermally treated pyrophyllite were analyzed by means of weight loss and structural changes as detected by using XRD, DSC-TGA and SEM analysis. Pyrophyllite primarily transforms to pyrophyllite dehydroxylate after roasting at $1,000^{\circ}C$. Pyrophyllite dehydroxylate transforms to mullite and cristobalite at $1,300^{\circ}C$. This study demonstrates that pyrophyllite could be used as a reactive media for ceramic support layers from Permeable Reactive Barriers.

본 연구는 세라믹 압출법을 이용하여 납석기반 세라믹 반응매질을 제조하였다. 납석의 광물학적 특성은 XRD, XRF, DSC-TGA 및 제타전위분석을 실시하였으며, 납석기반의 세라믹 반응매질은 다양한 소성온도범위($500{\sim}1,300^{\circ}C$)에서 수행하였다. 소성온도가 증가할수록 반응매질의 강도는 증가하였으나, 비표면적은 감소된다. 온도변화에 따른 납석의 무게손실과 구조변화를 XRD, DSC-TGA 및 SEM 분석을 통해 확인하였으며, 엽납석은 소성온도 $1,000^{\circ}C$에서 pyrophyllite dehydroxylate로 전이되며, $1,300^{\circ}C$에서 뮬라이트와 크리스토발라이트로 상변화가 발생된다. 본 연구를 통해 납석은 투수성반응벽체 적용을 위한 반응매질로서 세라믹 지지체 역할을 수행할 수 있을 것으로 판단된다.

Keywords

References

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