한국지반환경공학회 논문집 (Journal of the Korean GEO-environmental Society)

한국지반환경공학회 (Korean Geo-Environmental Society)
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산성광산배수 처리를 위한 산업부산물 소재 다기능성 세라믹의 적용 가능성 연구

Feasibility Study on the Multi-functional Ceramics using Industrial By-product for Treatment of Acid Mine Drainage

  • Lee, Yeong-Nam (School of Civil, Urban, and Environmental Engineering, Kyungsung University) ;
  • Yim, Soo-Bin (School of Civil, Urban, and Environmental Engineering, Kyungsung University)
  • 투고 : 2017.10.17
  • 심사 : 2017.11.17
  • 발행 : 2017.12.01
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초록

본 연구에서는 천연 제올라이트와 제강전로슬래그를 혼합 소성한 ZS 세라믹을 이용한 산성광산배수 내 중금속 및 황산이온의 제거 특성을 파악함으로써 산성광산배수 처리를 위한 ZS 세라믹의 적용 가능성을 평가하고자 하였다. 펠렛형 ZS(Zelolite-Slag) 세라믹을 이용한 회분식 실험에서 ZS 세라믹 내 천연 제올라이트에 대한 제강전로슬래그의 배합비가 증가할수록 중금속 제거효율 및 황산이온의 제거효율은 증가하였다. ZS 세라믹의 결합력 및 알칼리 공급능력, 중금속 및 황산이온 제거능력, 에너지 비용 측면에서 평가할 때 산성광산배수의 처리를 위한 ZS 세라믹의 최적의 제작 조건은 Z:S 배합비 1:2~1:3, 소성온도 $600{\sim}800^{\circ}C$, 소성시간 2시간인 것으로 파악되었다. 최적의 조건에서 제작된 ZS 세라믹에 의한 산성광산배수 처리 실험결과 중금속(Al, As, Cd, Cu, Fe, Mn, Pb, Zn)은 거의 100%에 가까운 매우 높은 제거효율을 얻을 수 있었으며, 황산이온에 대해서는 77.1%의 제거효율을 나타내고 있었다. 본 연구의 실험결과를 통해 판단해 볼 때 천연 제올라이트와 제강전로슬래그를 혼합 소성한 ZS 세라믹은 산성광산배수의 효과적인 처리제로서 적용될 가능성이 높을 것으로 기대된다.

This research was conducted to investigate the removal characteristics of heavy metals and sulfate ion from acid mine drainage (AMD) by multi-functional zeolite-slag ceramics (ZS ceramics), in which natural zeolite and converter slag were mixed and calcined at high temperature. The batch test showed that the removal efficiency of heavy metals by pellet-type ZS ceramics increased as the mixing weight ratio of converter slag to natural zeolite increased. The optimal mixing ratio of natural zeolite to converter slag for the removal of heavy metals and sulfate ion from AMD was observed to be 1:2~1:3. The adequate calcination temperature and time of ZS ceramics for the treatment of AMD were found to be $600{\sim}800^{\circ}C$ and 2 hours, respectively. The removal test of heavy metals and sulfate ion from AMD by the ZS ceramics prepared in optimal condition exhibited very high removal efficiencies close to 100% for all heavy metals (Al, As, Cd, Cu, Fe, Mn, Pb, Zn) and 77.1% for sulfate ion. The experimental results in this study revealed that the ZS ceramics could function as an effective agent for the treatment of AMD.

키워드

참고문헌

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