한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제46권6호
  • /
  • Pages.668-672
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  • 2009
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  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
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에트린자이트 미세다공체의 중금속 이온 고정화 특성

Heavy Metal Ion Immobilization Properties of Microporous Ettringite Body

  • 나현엽 (경남대학교 신소재공학과) ;
  • 송태웅 (경남대학교 신소재공학과)
  • Na, Hyeon-Yeop (Department of Advanced Materials Engineering, Kyungnam University) ;
  • Song, Tae-Woong (Department of Advanced Materials Engineering, Kyungnam University)
  • 발행 : 2009.11.30
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초록

Heavy metal ion immobilization properties of microporous ettringite (3Ca$O{\cdot}Al_2O_3{\cdot}3CaSO_4{\cdot}32H_2$) body were examined using standard solutions of typical heavy metals. Microporous Ettringite body with desirable shape for an ionic adsorbent was obtained by the self hardening of the paste prepared from the mixture of tricalcium aluminate($C_3$A) and gypsum(CaS$O_4{\cdot}2H_2$O). Crushed grains of ettringite were soaked in each standard solutions of Pb, Co, Cd, Mn and Cr concentrated at 200 ppm. In order to evaluate the ionexchange and immobilization ability, the ionic concentration of the filtrate solution as well as the solution obtained after leaching test was measured. As a result, for the heavy metal ions excepting Cr, porous ettringite body was revealed to be excellent in ionic exchange and immobilization properties though some ions eluted at the severe condition of pH 2. The adsorption and keeping capacity for four heavy metals showed the order of $Pb{>}Co{>}Cd{>}$Mn.

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참고문헌

  1. H. F. W. Taylor, The Chemistry of Cement, pp. 168-283, Academic Press Inc., London, 1979
  2. F. M. Lea, The Chemistry of Cement and Concrete, pp. 177-249, Chemical Publishing Co, Inc., New York, 1971
  3. G. J. McCarthy, D. J. Hassett, and J. A. Bender, “Synthesis, Crystal Chemistry and Stability of Ettringite, a Material with Potential Applications in Hazardous Waste Immobilization,” Advanced Cementitious Systems : Mechanisms and Properties, Materials Research Society Symposium Proceedings, 245 129-49 (1992)
  4. M. L. D. Gougar, B. E. Scheetz, and D. M. Roy, “Ettringite and C-S-H Portland Cement Phases for Waste Ion Immobilization,” Waste Management, 16 [4] 295-303 (1996) https://doi.org/10.1016/S0956-053X(96)00072-4
  5. V. Albino, R. Cioffi, M. Marroccoli, and L. Santoro, “Potential Application of Ettringite Generating Systems for Hazardous Waste Stabilization,” Journal of Hazardous Materials., 51 241-52 (1996) https://doi.org/10.1016/S0304-3894(96)01828-6
  6. M. Zhang and E. J. Reardon, “Removal of B, Cr, Mo and Se from Wastewater by Incorporation into Hydrocalumite and Ettringite, Environmental,” Science & Technology, 37 [13] 2947-52 (2003) https://doi.org/10.1021/es020969i
  7. D. Bonen and S. L. Sarkar, “The Present State-of-the-art of Immobilization of Hazardous Heavy Metals in cEmentbased Materials,” pp. 481-98, Advances Cem. & Concr., Proceedings of an Engineering Foundation Conference(edited by Michael W. Grutzeck and Shondeep L. Sarkar), American Society of Civil Engineers, New York, 1994
  8. H. Y. Na and T. W. Song, “Formation Behavior of Microporous Ettringite Body by Hydration of Tricalciumaluminate Clinker and Gypsum,” J. Kor. Ceram. Soc., 45 [11] 734-38 (2008) https://doi.org/10.4191/KCERS.2008.45.1.734
  9. T. K. Ki and T. W. Song, “Study on Synthesis of Tricalciumaluminate Clinker by Hydrate-burning Method,” J. Kor. Ceram. Soc., 44 [9] 517-23 (2007) https://doi.org/10.4191/KCERS.2007.44.9.517
  10. J. Bensted and S. Pracashi Varma, “Studies of Ettringite and its Derivatives, Part 2: Chromate Substitution,” Silicate Industries, 37 [12] 315-18 (1972)