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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.6
- 수록면
- 356 - 365 (10page)
이용수
초록· 키워드
오류제보하기
The aqueous carbonation efficiencies of basic oxygen furnace (BOF) and ladle slags at various pressures, temperatures, and liquid-to-solid (L/S) ratios were investigated to determine optimum conditions. The maximum CO₂ carbonated concentrations in slag (0.584 mmol/g for BOF slag and 1.038 mmol/g for ladle slag) was obtained at 10 bars, 40°C, and L/S = 5 mL/g-dry. The L/S ratio was the most critical parameter for carbonation. The effect of carbonated slag amendment on the immobilization of heavy metals in two field-contaminated soils was also investigated. The immobilization efficiencies evaluated by using the toxicity characteristic leaching procedure (TCLP) and the Standards, Measurements and Testing Programme (SM&T) were above 90% for both raw and carbonated slags for all soils. The TCLP-extractable heavy metals concentrations were below the criteria (5.0, 1.0 and 5.0 g/L for Pb, Cd, and Cr, respectively) after immobilizations with both slags except for Pb in soil B. The SM&T analysis showed the decrease in the exchangeable phase but the increase in residual phase after immobilization with raw and carbonated slags. The results of this study imply the promising potential of the carbonated slags on the immobilization of heavy metals in the field-contaminated soils.
목차
ABSTRACT
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (42)
참고문헌 신청
Proctor DM, Fehling KA, Shay EC, et al. Physical and chemical characteristics of blast furnace, basic oxygen furnace, and electric arc furnace steel industry slags. Environ. Sci. Technol. 2000;34:1576-1582.
Rađenovi? A, Malina J, Sofili? T. Characterization of ladle furnace slag from carbon steel production as a potential adsorbent. Adv. Mater. Sci. Eng. 2013;2013:1-6.
Worldsteel Association. Steel industry by-products. Worldsteel Association Publishing Fact sheet [Internet]. c2016 [cited June 2016]. Available from: https://www.worldsteel.org/publications/fact-sheets.html.
Shi C. Characteristics and cementitious properties of ladle slag fines from steel production. Cem. Concr. Res. 2002;32:459-462.
Doucet FJ. Effective CO2-specific sequestration capacity of steel slags and variability in their leaching behavior in view of industrial mineral carbonation. Miner. Eng. 2010;23:262-269.
Rađenovi? A, Malina J, Sofili? T. Characterization of ladle furnace slag from carbon steel production as a potential adsorbent. Adv. Mater. Sci. Eng. 2013;2013:1-6.
Worldsteel Association. Steel industry by-products. Worldsteel Association Publishing Fact sheet [Internet]. c2016 [cited June 2016]. Available from: https://www.worldsteel.org/publications/fact-sheets.html.
Shi C. Characteristics and cementitious properties of ladle slag fines from steel production. Cem. Concr. Res. 2002;32:459-462.
Doucet FJ. Effective CO2-specific sequestration capacity of steel slags and variability in their leaching behavior in view of industrial mineral carbonation. Miner. Eng. 2010;23:262-269.
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