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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2019.1
- 수록면
- 1,041 - 1,046 (6page)
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In terms of long-term safety for radioactive waste disposal, the anionic iodide (I-129) with a long half-life(1.6 106 yr) is of a critical importance because this radionuclide migrates in geological media withlimited interactions. Various studies have been performed to retard the iodide migration. Recently, someminerals that are likely generated from waste container corrosion, have been suggested to have aconsiderable chemical interaction with iodide. In this study, chalcocite and mackinawite were selected ascandidate minerals for underground corrosion materials, and an iodide sorption experiment were carriedout. The experiment was performed under anoxic and alkaline conditions and the pH effects on theiodide sorption were investigated in the range of pH 8 to 12. The results showed that both mineralsdemonstrated a noticeable sorption capacity on iodide, and the distribution coefficient (Kd) decreased asthe pH increased in the experimental condition. In addition, when the alkalinity increased higher than apH of 12, the sorption capacity of both minerals decreased dramatically, likely due to the competition ofhydroxy ions with the iodide. This result confirmed that chalcocite was an especially good sorbing mediafor iodide under alkaline conditions with a pH value of less than 12.
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참고문헌 (21)
참고문헌 신청
C. K. Park / 2016 / Diffusion and sorption properties of some sorbing nuclides onto granodiorite / Nucl. Technol 196:121~129
K. V. Ticknor / 1990 / Interaction of iodide and iodate with granite fracturefilling minerals / J. Radioanal. Nucl. Chem 140:75~90
R. Strickert / 1980 / The sorption of Tc and I by various minerals / Nucl. Tech 49:253
T. J. Park / 2014 / Understanding the characteristics of the uranium migration at the presence of chalcocite as a function of redox conditions / Korean Radioactive Waste Society Spring Meeting :181~182
S. Y. Lee / 2006 / Microbial copper reduction method to scavenge anthropogenic radioiodine / Sci. Rep 6:459~482
K. V. Ticknor / 1990 / Interaction of iodide and iodate with granite fracturefilling minerals / J. Radioanal. Nucl. Chem 140:75~90
R. Strickert / 1980 / The sorption of Tc and I by various minerals / Nucl. Tech 49:253
T. J. Park / 2014 / Understanding the characteristics of the uranium migration at the presence of chalcocite as a function of redox conditions / Korean Radioactive Waste Society Spring Meeting :181~182
S. Y. Lee / 2006 / Microbial copper reduction method to scavenge anthropogenic radioiodine / Sci. Rep 6:459~482
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