Effect of emulsifiers on the cementation of spent radioactive organic solvents

ZHANG Wenfeng; LI Junfeng; WANG Jianlong

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Journal of Tsinghua University(Science and Technology) ›› 2015, Vol. 55 ›› Issue (6) : 666-671.

NUCLEAR AND NEW ENERGY ENGINEERING

Effect of emulsifiers on the cementation of spent radioactive organic solvents

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Abstract

Spent radioactive organic solvent was solidified using calcium sulfoaluminate cement (SAC), zeolite and slaked lime as the basic materials with additives and accelerators. Two kinds of emulsifiers, MR-1 and T-80, were evaluated based on the fluidity, setting times and 28 d compressive strength. The results show that the spent radioactive organic solvent can be solidified using these two emulsifiers. The fluidity was from 17.1 cm to 24.5 cm, the setting time was from 20 min to 44 min, and the 28 d compressive strength was more than 7 MPa, meeting the requirements of GB14569.1-2011. The fluidity of the cement slurry with T-80 was smaller than with MR-1 and the setting time was shorter and both increased with increasing amounts of emulsifier. The 28 d compressive strength was higher with T-80. X-ray diffraction(XRD) analyses suggested that the additions of tri-butyl phosphate kerosene(TBP/OK) and the emulsifiers did not interfere with the formation of the SAC hydration products.

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radioactive waste / spent organic solvent / cementation / nuclear waste treatment

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ZHANG Wenfeng, LI Junfeng, WANG Jianlong. Effect of emulsifiers on the cementation of spent radioactive organic solvents[J]. Journal of Tsinghua University(Science and Technology). 2015, 55(6): 666-671

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