방사성폐기물학회지 (Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT))

  • 제9권2호
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  • Pages.63-71
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  • 2011
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  • 1738-1894(pISSN)
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  • 2288-5471(eISSN)
한국방사성폐기물학회 (Korean Radioactive Waste Society)
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우라늄 오염 동전기 침출액의 재이용을 위한 침전-여과 방법

Precipitation-Filtering Method for Reuse of Uranium Electrokinetic Leachate

  • 투고 : 2011.02.25
  • 심사 : 2011.05.23
  • 발행 : 2011.06.30
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초록

우라늄 오염토양을 동전기제염 시 많은 양의 동전기 침출액이 발생한다. 발생된 우라늄 침출액을 재이용하기 위한 처리기술이 개발되었다. 동전기제염 시 발생된 우라늄침출액 내의 우라늄농도는 180 ppm이었고, Mg(II), K(I), Fe(II), Al(III) 농도는 20 ppm~1,210 ppm이었다. 우라늄침출액의 최적 처리공정은 혼합, 응집, 침전, 농축, 그리고 여과로 구성된다. 침전액의 pH를 11로 맞추기 위해, calcium hydroxide는 3.0g/100ml 그리고 sodium hydroxide는 2.7g/100ml이 필요했다. 여러 침전실험 결과 NaOH+0.2g alum+0.15g magnetite가 여과를 위한 최적 침전혼합제로 선정되었다. NaOH+0.2g alum+0.15g magnetite 투입 시 침전입자의 평균크기는 $600\;{\mu}m$이었다. pH=9에서 침전 후 상등액에 총 금속농도가 가장 낮았기 때문에, 최적 침전을 위하여 먼저 0.2g/100ml alum와 0.15g/100ml magnetite 투입한 후 pH=9일 때까지 sodium hydroxide을 투입하여야 한다.

A large volume of uranium electrokinetic leachate has been generated during the electrokinetic decontamination to remove uranium from contaminated soil. The treatment technology for the reuse of the uranium leachate was developed. The concentration of uranium in the generated uranium leachate was 180 ppm and concentrations of Mg(II), K(I), Fe(II), and Al(III) ions ranged from 20 ppm to 1,210 ppm. The treatment process for uranium leachate consisted mainly of mixing and cohesion, precipitation, concentration, and filtration. In order to obtain the pH=11 of a precipitate solution, the calcium hydroxide needs to be 3.0g/100ml and the sodium hydroxide needed to be 2.7g/100ml. The results of several precipitation experiments showed that a mixture of NaOH+0.2g alum+0.15g magnetite was an optimal precipitant for filtration. The average particle size of precipitate with NaOH+alum+0.15g magnetite was $600\;{\mu}m$. Because the total value of metal concentrations in supernatant at pH=9 was the smallest, sodium hydroxide should be added with 0.2g alum and 0.15g magnetite for pH=9 of leachate.

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참고문헌

  1. A. Ikeda, M. Aida, Y. Fujii, S. Kataoka, S. Annen, J. Sato, J., Nuclear science and Technology. 10, pp. 1099-1105 (2002).
  2. W. Luo, S. D. Kelly, K.M. Kemner, D. Watson, J. Zhou, P.M. Jardine, and B. Gu, "Sequestering uranium and technetium through co-precipitation with aluminum in a contaminated acidic environment," Environ. Sci. Technol. 43, pp.7516-7522 (2009). https://doi.org/10.1021/es900731a
  3. B. Gu, S. C. Brooks, Y. Roh, P. M. Jardine, "Geochemical reactions and dynamics during titration of a contaminated groundwater with high uranium, aluminum, and calcium.," Geochim. Cosmochim. Acta. 67, pp. 2749-2761 (2003). https://doi.org/10.1016/S0016-7037(03)00097-8
  4. J. D. Istok, J. M. Senko, L. R Krumholz, D. Watson, M. A Bogie, A Peacock, Y. J. Chang, D. C. White, "In situbioreduction of technetium and uranium in a nitratecontaminated aquifer," Environ. Sci. Technol. 38, pp. 468-475 (2004). https://doi.org/10.1021/es034639p
  5. L. Couston, D. Pouyat, C. Mpulin, P. Decambox, "Speciation of uranyl species in nitric acid medium by time-resolved laser-induced fluorescence," Appl. Spectrosc. 49, pp. 349-353 (1995). https://doi.org/10.1366/0003702953963553
  6. D. Langmuir, "Uranium solution-mineral equilibria at low temperatures with applications to sedimentary ore deposit," Geochim. Cosmochim. Acta. 42, pp. 547 (1978). https://doi.org/10.1016/0016-7037(78)90001-7
  7. C. Moulin, I. Laszak, V. MouIin, C. Tondre, "Timeresolved laser-induced fluorescence as a unique tool for low-level uranium speciation," Appl. Spectrosc. 52, pp. 528-535 (1998). https://doi.org/10.1366/0003702981944076
  8. P. Zhou, B. Gu, "Extraction of oxidized and reduced forms of uranium from contaminated soils, The effects of carbonate concentration and pH.," Environ. Sci. Technol. 39, pp. 4435-4440 (2005). https://doi.org/10.1021/es0483443
  9. B. Gu, Y. Ku, P.M. Jardine, "Sorption and binary exchange of nitrate, sulfate, and uranium on an anion-exchange resin," Environ. Sci. Technol. 38, pp. 3184-3188 (2004). https://doi.org/10.1021/es034902m
  10. P.K. Bhattacharya, R.D. Saini, P.B. Ruikar, "Reaction between Uranium(VI) and hydrogen peroxide in hydrochloric acid medium," Int. J. Chem. Kinet. 14, pp. 1219 (1982). https://doi.org/10.1002/kin.550141106
  11. L. McFarlane, D. Rollwagen, "Hydrogen peroxide precipitation of uranium at Madawaha Mines," Proceedings Canadian Mineral Processors, Ottawa, Jan. Paper No. 8, 139, pp. 19-21 (1982).
  12. R Kunin, A Preuss, Ind. Eng. Chem. 48(8), 30A, (1956). https://doi.org/10.1021/i650563a727
  13. D. E. Chia, W. C. Cooper, Hydrometallurgy. 16. 1, (1986). https://doi.org/10.1016/0304-386X(86)90048-4
  14. S.M. Badawy, "Uranium isotope enrichment by complexation with chelating polymer adsorbent," Radiat. Phys. Chem. 66, 67, (2003). https://doi.org/10.1016/S0969-806X(02)00204-9
  15. S.M. Badawy, A.M. Dessouki, "Cross-linked polyacrylonitrile prepared by radiation-induced polymerization," J. Phys. Chem. 107, pp. 11273 (2003). https://doi.org/10.1021/jp034603j
  16. H.M. Nizam El-Din, S.M. Badawy, AM. Dessouki, "Chelating polymer granules prepared by radiation-induced homopolymerization, I Kinetic study of radiation process," J. appl. Polym. Sci. 77, pp. 1405 (2000). https://doi.org/10.1002/1097-4628(20000815)77:7<1405::AID-APP1>3.0.CO;2-5
  17. M. Shamsipur, Y. Yamini, P. Ashtarl, A Khanchi, M. Ghannadi-Marageh, Separ. Sci. Technol. 35, pp. 1011 (2000). https://doi.org/10.1081/SS-100100207
  18. T. Miura, Bunseki Kagaku. 49, pp. 245 (2000). https://doi.org/10.2116/bunsekikagaku.49.245
  19. H. E. Carter, P. Warwick, J. Cobb, G. Longworth, Analyst. 124, pp. 271 (1999). https://doi.org/10.1039/a809781j
  20. T. Yokoyama, A Makishima, E. Nakamura, Anal. Chem. 71, pp. 135 (1999) https://doi.org/10.1021/ac9805807
  21. O. Alhassanieh, A, Abdulhad, M. Ghafar, A Aba, Appl. Radiation Isotopes. 51, pp. 439 (1999).
  22. V. Karivam, K. H. Theimer, M. Lucic, Fresenius J. Anal. Chem. 360, pp. 527 (1998). https://doi.org/10.1007/s002160050753
  23. K. Lee, B. B. Jang, W. J. Kwon, J. Sub, J. Pol. Sci., Part A Pol. Chem. 37, pp. 4117 (1999). https://doi.org/10.1002/(SICI)1099-0518(19991115)37:22<4117::AID-POLA10>3.3.CO;2-2
  24. S. Y. Bac, G. L. Southard, G. M. Murray, Anal, Chim. Acta. 397, pp. 137 (1999).
  25. N.R Mann, TA Todd, "Crossflow filtertion testing of INEEL radioactive and non-ratio active waste slurries," Chemical Engineering Journal. 80, pp. 237-244 (2000). https://doi.org/10.1016/S1383-5866(00)00096-4
  26. S.M. Rao, C.K. Asnani, "Application of polyeletrolytes for solid-liquid separations in front end nuclear waste management," 10th international Coference on Environmental Remediation and Radioactive Waste Management, 05, pp. 2268-2271 (2005).
  27. 김재건, 이정호, 이용상, 류재봉, "핵연료 가공시설에서 발생되는 방사성액체폐기물 처리방법 분석," 한국방사성폐기물학회 춘계학술대회, pp.99-100 (2009).
  28. 박경록, 조항래, 황태원, "액체폐기물 처리성능 향상을 위한 RO시스템 적용사례," 한국방사성폐기물학회 춘계학술대회, pp. 109-110 (2010)