NUCLEAR TECHNIQUES, Volume. 47, Issue 7, 070301(2024)
The Sr2+ adsorption performance of rock colloids in a cavern disposal repository
Figures & Tables(11)
Fig. 1. Effect of pH value on the zeta potential and average particle size of the surrounding rock colloids
Fig. 2. Effect of ions on the zeta potential and average particle size of the surrounding rock colloids
Fig. 3. Effect of temperature on the zeta potential and average particle size of the surrounding rock colloids
Fig. 4. Effect of time on Sr2+ adsorption by the surrounding rock (a) and surrounding rock colloids (b)
Fig. 5. Kinetic model fitting curves of Sr2+ adsorption by the surrounding rock colloids(a) Quasi-first-order kinetic model, (b) Quasi-second-order kinetic model
Fig. 6. Isotherm model fitting curves of Sr2+ adsorption by the surrounding rock colloids(a) Langmuir isotherm model, (b) Freundlich isotherm model
Fig. 7. Effect of pH value on Sr2+ adsorption by the surrounding rock colloids
Fig. 8. Effect of ions on Sr2+ adsorption under different concentrations by the surrounding rock colloids
Table 1. Main chemical composition of the surrounding rock of the cavern disposal repository
View tableView in ArticleTable 1. Main chemical composition of the surrounding rock of the cavern disposal repository
化学成分Chemical composition ω / % CaO 1.49 SiO2 73.28 Al2O3 11.12 TiO2 0.10 Fe2O3 3.17 MgO 0.06 Na2O 0.06 K2O 9.13 P2O5 0.07
Table 2. Kinetic model parameters of Sr2+ adsorption by the surrounding rock colloids
View tableView in ArticleTable 2. Kinetic model parameters of Sr2+ adsorption by the surrounding rock colloids
准一级动力学模型 The quasi-first-order kinetic model 准二级动力学模型 The quasi-second-order kinetic model Qe(cal) / mg·g-1 Qe(exp) / mg·g-1 k1 / min-1 R2 Qe(cal) / mg·g-1 Qe(exp) / mg·g-1 k2 / g·mg-1·min-1 R2 15.96 41.80 0.005 0.667 42.35 41.80 0.001 0.999
Table 3. Isotherm model parameters of Sr2+ adsorption by the surrounding rock colloids
View tableView in ArticleTable 3. Isotherm model parameters of Sr2+ adsorption by the surrounding rock colloids
Langmuir吸附等温模型Langmuir isotherm model Freundlich吸附等温模型Freundlich isotherm model Qm / mg·g-1 KL / L·mg-1 R2 KF / mg1-n·Ln·g-1 n R2 170.648 0.031 0.685 2.295 0.854 0.979
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Gang YANG, Yangchun LENG, Tong SHEN, Xianguo TUO. The Sr2+ adsorption performance of rock colloids in a cavern disposal repository[J]. NUCLEAR TECHNIQUES, 2024, 47(7): 070301
Paper Information
Category: Research Articles
Received: Sep. 13, 2023
Accepted: --
Published Online: Aug. 27, 2024
The Author Email: Xianguo TUO (庹先国)
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