Sorption of Eu(III) Onto MX-80 and Granite in Ca-Na-Cl Solutions

• 발행기관: 한국방사성폐기물학회
• 저자명: Jianan Liu Shinya Nagasaki Tianxiao (Tammy) Yang
• 간행물 정보: 『Journal of Nuclear Fuel Cycle and Waste Technology (JNFCWT)』Vol.23 No.2, 281~295쪽, 전체 15쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2025.06.30

국문 초록

The sorption of Europium(III) (Eu(III)) on MX-80 bentonite and granite was systematically studied as a function of ionic strength (0.05-1 mol·kgw−1) and pHm (4-9) in Ca-Na-Cl solutions by batch experiments and 2-site protolysis no electrostatics surface complexation and cation exchange (2SPNE/CE) model. Eu(III) has often been used as a chemical analogue of plutonium(III) which is an important element of interest for the safety assessment of a deep geological repository (DGR) for nuclear waste. It was found that the sorption of Eu(III) on MX-80 and granite was dependent on pHm. The sorption of Eu(III) on MX-80 was dependent on ionic strength at pHm ≤ 6. The effect of ionic strength on the sorption of Eu(III) on granite was negligible. The 2SPNE/CE model simulation suggested that the ion exchange reaction might be the main sorption mechanism at low pHm, while the surface complexation reactions might be the dominant sorption mechanism at higher pHm for the sorption of Eu(III) on both MX-80 and granite.

목차

1. Introduction

2. Experimental Section

3. Results and Discussion

4. Conclusion

Conflict of Interest

Acknowledgements

REFERENCES

키워드

Europium Sorption MX-80 Granite 2SPNE/CE

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