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Laboratory column experiments were conducted to evaluate the feasibility of injectable apatite method for the sequestration of Sr-90 in groundwater. The columns were tested to evaluate the rate of citrate biodegradation, the amounts of apatite formed, and the treatability of strontium by the sediment and apatite. The results showed the decreases in citrate, calcium, and phosphate concentrations and the increases in alkalinity and citrate degradation products (acetate and formate) in the columns, suggesting that the citrate degradation and formation of calcium phosphate are occurring. Although the calcium and phosphate were not completely consumed within the columns, some amounts of apatite were formed and it showed an ability to treat strontium in groundwater. This study provides a fundamental understanding of reaction mechanisms for the injectable apatite sequestration method for Sr-90 removal.
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참고문헌 (16)
참고문헌 신청
Chang, H.-S. / 2011 / Strontium and cesium release mechanisms during unsaturated flow through waste-weathered Hanford sediments / Environ. Sci. Technol 45:8313~8320
Fritz, B.G. / 2011 / 100-NR-2 Apatite Treatability Test: An Update on Barrier Performance
Hughes, J.M. / 1989 / Structural variations in natural F, OH and Cl apatites / Am. Mineral 74:870~876
Killey, R.W.D. / 1987 / Radiostrontium migration from a 1953-54 liquid release to a sand aquifer / Water Poll. Res. J. Canada 22:107~128
Mehlich, A. / 1938 / Use of triethanolamine acetate-barium hydroxide buffer for the determination of some base exchange properties and lime requirement of soil / Soil Sci. Soc. Am. Proc 29:374~378
Fritz, B.G. / 2011 / 100-NR-2 Apatite Treatability Test: An Update on Barrier Performance
Hughes, J.M. / 1989 / Structural variations in natural F, OH and Cl apatites / Am. Mineral 74:870~876
Killey, R.W.D. / 1987 / Radiostrontium migration from a 1953-54 liquid release to a sand aquifer / Water Poll. Res. J. Canada 22:107~128
Mehlich, A. / 1938 / Use of triethanolamine acetate-barium hydroxide buffer for the determination of some base exchange properties and lime requirement of soil / Soil Sci. Soc. Am. Proc 29:374~378
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