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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2015.1
- 수록면
- 309 - 315 (7page)
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The objective of this study is to investigate the immobilization properties of arsenic in solidification process using geopolymer binder. Metakaolin and fly ash were used as prime materials for geopolymer that was also called as activated metakaolin cement (or Si + Al cement). The immobilization of As in geopolymer was found to be very limited regardless of the oxidation state of As and the mixing ratio of As to the binders. These results may be ascribed to the low Ca contents in prime materials used and the structural property of geopolymer formed. It was generally accepted that As was immobilized into C-S-H (calcium silicate hydrates) via precipitation and sorption, when it was solidified with ordinary portland cement and/or lime. When Ca(II) or Fe(III) was used as stimulating agents, the As leaching was reduced by 15 ~ 25% than that of control experiment. These limited improvements of As immobilization might be resulted from the extremely high pH in geopolymer reaction.
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참고문헌 (24)
참고문헌 신청
Pacheco-Torgal, F. / 2008 / Alkali-activated Binders: A review part 1. historical background, terminology, reaction mechanisms and hydration products / Journal of Construction and Building Materials 22(7):1305~1314
Pacheco-Torgal, F. / 2008 / Alkali-activated Binders: A review part 2. about materials and binders manufacture / Journal of Construction and Building Materials 22(7):1315~1322
Li, C. / 2010 / A Review: The Comparison between Alkali-activated Slag (Si+Ca)and Metakaolin (Si+Al) Cements / Cement and Concrete Research 40:1341~1349
Bondar, D. / 2011 / Effect of adding mineral additives to Alkali-activated natural pozzolan paste / Journal of Construction and Building Materials 25(6):2906~2910
Shi, C / 2006 / Stabilization/solidification of hazardous and radioactive wastes with Alkali-activated cements / Journal of Hazardous Materials B137:1656~1663
Pacheco-Torgal, F. / 2008 / Alkali-activated Binders: A review part 2. about materials and binders manufacture / Journal of Construction and Building Materials 22(7):1315~1322
Li, C. / 2010 / A Review: The Comparison between Alkali-activated Slag (Si+Ca)and Metakaolin (Si+Al) Cements / Cement and Concrete Research 40:1341~1349
Bondar, D. / 2011 / Effect of adding mineral additives to Alkali-activated natural pozzolan paste / Journal of Construction and Building Materials 25(6):2906~2910
Shi, C / 2006 / Stabilization/solidification of hazardous and radioactive wastes with Alkali-activated cements / Journal of Hazardous Materials B137:1656~1663
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