대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제34권4호
  • /
  • Pages.239-246
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  • 2012
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  • 1225-5025(pISSN)
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  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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천연제올라이트와 제강전로슬래그를 이용한 세라믹 소재에 의한 산성폐수 내 중금속의 제거특성

Removal Characteristics of Heavy Metals in Acid Wastewater by Ceramics Using Natural Zeolite and Converter Slag

  • 김동희 (경성대학교 환경공학과) ;
  • 임수빈 (경성대학교 환경공학과)
  • Kim, Dong-Hee (Department of Environmental Engineering, Kyungsung University) ;
  • Yim, Soo-Bin (Department of Environmental Engineering, Kyungsung University)
  • 투고 : 2012.03.15
  • 심사 : 2012.04.26
  • 발행 : 2012.04.30
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초록

천연제올라이트와 제강전로슬래그를 혼합 소성한 펠렛형 세라믹 소재(ZS 세라믹)를 이용하여 산성폐수 내 중금속의 제거특성 및 제거기작을 연구하고자 하였다. 세라믹 소재의 최적의 소성온도는 $600{\sim}800^{\circ}C$로 파악되었으며 소성시간에 따른 중금속 제거효율의 변화는 거의 나타나지 않았다. ZS 세라믹의 최적의 투여농도는 2~5%임을 알 수 있었고 최대의 중금속 제거능은 중금속별로 Al 84.7 mg/g, Cd 37.3 mg/g, Cr 81.7 mg/g, Cu 55.6 mg/g, Fe 57.2 mg/g, Mn 32.1 mg/g, Ni 38.0 mg/g, Pb 71.6 mg/g, Zn 46.3 mg/g로 나타났다. pH는 ZS 세라믹의 중금속 제거에 큰 영향을 미치는 인자로 파악되었다. ZS 세라믹에 의한 중금속의 제거 기작 실험을 통해 ZS 세라믹은 천연제올라이트에 의한 이온교환 및 흡착의 기작과 제강전로슬래그의 알칼리 공급에 의한 중화침전의 기작이 동시에 발생하는 중금속 처리제임을 확인 할 수 있었다.

This study was performed to investigate the removal characteristics and mechanism of heavy metals using pellet-type ceramics(ZS ceramics), in which natural zeolite was mixed and calcined with converter slag. The optimal calcination temperature range was measured to be $600{\sim}800^{\circ}C$. The calcination time had little effect on the removal of heavy metal in acid wastewater. The adequate dose of ceramics was shown to be 2~5% for removal of heavy metals in acid wastewater. The maximum removal capacity of ZS ceramics for heavy metals were observed to be Al 84.7 mg/g, Cd 37.3 mg/g, Cr 81.7 mg/g, Cu 55.6 mg/g, Fe 57.2 mg/g, Mn 32.1 mg/g, Ni 38.0 mg/g, Pb 71.6 mg/g, Zn 46.3 mg/g. The pH played a pivotal role in the removal of heavy metals by ZS ceramics. The analysis results of mechanism exhibited that the ZS ceramics could act as a multi-functional ceramics for removal of heavy metals in acid wastewater by adsorption, ion-exchange, or precipitation.

키워드

과제정보

연구 과제 주관 기관 : 한국연구재단

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피인용 문헌

  1. Stabilization of mixed heavy metals in contaminated marine sediment using steel slag vol.38, pp.3, 2014, https://doi.org/10.5394/KINPR.2014.38.3.269
  2. Competitive Adsorption Characteristics of Cupper and Cadmium Using Biochar Derived from Phragmites communis vol.34, pp.1, 2015, https://doi.org/10.5338/KJEA.2015.34.1.10