Gang YANG, Bingqi LIU, Guoyi LU, Yangchun LENG, Xianguo TUO. Research on the carbonization law of cement and its adsorption of 137Cs[J]. NUCLEAR TECHNIQUES, 2024, 47(10): 100302
- NUCLEAR TECHNIQUES
- Vol. 47, Issue 10, 100302 (2024)
Fig. 1. XRD pattern of cement
Fig. 2. FT-IR pattern of cement
Fig. 3. SEM pattern of carbonized cement(a) Cement paste, (b) Carbonization for 28 d, (c) Carbonization for 1 d, (d) Carbonization for 3 d, (e) Carbonization for 7 d
Fig. 4. Adsorption-desorption and pore size distribution curve of carbonized cement(a) Cement paste, (b) Carbonization for 1 d, (c) Carbonization for 3 d, (d) Carbonization for 7 d, (e) Carbonization for 28 d
Fig. 5. TGA-DTG curve of carbonized cement(a) Cement paste, (b) Carbonization for 1 d, (c) Carbonization for 3 d, (d) Carbonization for 7 d, (e) Carbonization for 28 d
Fig. 6. Effect of time on the adsorption of 137Cs on carbonized cement
Fig. 7. Fitting curve of dynamic model of adsorption of 137Cs by carbonized cement(a) Quasi-first-order kinetic model, (b) Quasi-second-order kinetic model
Fig. 8. Langmuir isothermal model fitting curve of carbonized cement adsorption 137Cs(a) Cemrnt paste, (b) Carbonization cement
Fig. 9. Freundlich isothermal model fitting curve of carbonized cement adsorption 137Cs(a) Cemrnt paste, (b) Carbonization cement
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Table 1. Specific surface area of cement before and after carbonization
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Table 2. Kinetic model parameters of adsorption of 137Cs by carbonated cement
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Table 3. Isothermal model parameters of adsorption of 137Cs by carbonated cement
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