A sensitive improved method for analyzing diffusion coefficients of Cs in compacted bentonite with different lengths
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Abstract
Based on the one-dimensional diffusion theory, the diffusion parameters were obtained from numerical fitting by the Cyclic Initial Value (CIV) program written by MATLAB. Taking the through-diffusion experimental of cesium (stable isotope 133Cs) as an example, on the premise of ensuring accuracy, fitting calculation was used to obtain the diffusion equilibrium time of Cs in different lengths bentonite column. The fitting results of diffusion test for tritium water (HTO) and Cs are both very well. The calculation results of the equilibrium time for Cs diffusion show that the equilibrium time obtained by CIV is less than the experimental period in both groundwater (GW) and seawater (SW). In GW environment, when the sensitivity is at the maximum setting value, the diffusion coefficient of Cs in 1.5 cm bentonite column could be calculated in a shorter period of time. Compared with the experimental period, the time was shortened by 110 days. The main purpose is to verify the feasibility of CIV through the experimental data of Cs in different column lengths. The CIV program can also be used to fit and calculate the experimental data of other ongoing diffusion experiments and get the equilibrium time required for diffusion experiments. It shows that the proposed models offer the advantages of saving experimental time and reducing experimental waste.
Funding source: National Natural Science Foundation of China http://dx.doi.org/10.13039/501100001809
Award Identifier / Grant number: 21761002
Funding source: Nuclear Energy Development Project
Award Identifier / Grant number: HF2004-1
Funding source: National Defense Basic Scientific Research Project
Award Identifier / Grant number: JCKY2017401C005
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Author contributions: Zhenxing Liu: Writing-reviewing and Editing, Data processing, Methodology, Result discussion. Yuzhen Sun: Data collation, Result discussion, Reviewing and Editing. Jie Kong: Experimental operation, Result discussion, Methodology. Chuan-Pin Lee: Result discussion, Methodology. Rong Hua: Reviewing and Editing, Result discussion, Methodology. Weigang Liu: Data processing and calculation. Zhifen Wang: Experimental operation, Drawing figures and tables. Qifeng Jiang: Experimental operation, Investigation. Boping Li: Data collation.
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Research funding: This research is supported by grants from National Natural Science Foundation of China (21761002), the Nuclear Energy Development Project (HF2004-1), National defense basic scientific research project (JCKY2017401C005).
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Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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© 2022 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original Papers
- Spectroscopic investigation of the different complexation and extraction properties of diastereomeric diglycolamide ligands
- Influence of plutonium oxidation state on the formation of molecular hydrogen, nitrous acid and nitrous oxide from alpha radiolysis of nitric acid solution
- Efficient enrichment of U(VI) by two-dimensional layered transition metal carbide composite
- Application of artificial neural networks for predicting the isotopic composition of high burn-up solid plutonium sample using the 90–105 keV gamma-spectrum region
- Efficient and selective adsorption of U(VI) by succinic acid modified iron oxide adsorbent
- Electrochemical reduction of uranium and rhenium in hydrochloric acid system
- A sensitive improved method for analyzing diffusion coefficients of Cs in compacted bentonite with different lengths
- Adsorption behavior of chromium in an aqueous suspension of δ-alumina in absence and in presence of humic substances
- A novel theranostic probe [111In]In-DO3A-NHS-nimotuzumab in glioma xenograft
- Lead-free Sb-based polymer composite for γ-ray shielding purposes
Artikel in diesem Heft
- Frontmatter
- Original Papers
- Spectroscopic investigation of the different complexation and extraction properties of diastereomeric diglycolamide ligands
- Influence of plutonium oxidation state on the formation of molecular hydrogen, nitrous acid and nitrous oxide from alpha radiolysis of nitric acid solution
- Efficient enrichment of U(VI) by two-dimensional layered transition metal carbide composite
- Application of artificial neural networks for predicting the isotopic composition of high burn-up solid plutonium sample using the 90–105 keV gamma-spectrum region
- Efficient and selective adsorption of U(VI) by succinic acid modified iron oxide adsorbent
- Electrochemical reduction of uranium and rhenium in hydrochloric acid system
- A sensitive improved method for analyzing diffusion coefficients of Cs in compacted bentonite with different lengths
- Adsorption behavior of chromium in an aqueous suspension of δ-alumina in absence and in presence of humic substances
- A novel theranostic probe [111In]In-DO3A-NHS-nimotuzumab in glioma xenograft
- Lead-free Sb-based polymer composite for γ-ray shielding purposes
