An application for nonlinear heterogeneity-based isotherm models in characterization of niobium sorption on clay rocks and granite-Reference-Cited by-同舟云学术

An application for nonlinear heterogeneity-based isotherm models in characterization of niobium sorption on clay rocks and granite

Published:2023-11-08 Issue:6 Volume:88 Page:737-747
ISSN:0932-3902
Container-title:Kerntechnik
language:en
Short-container-title:

Author:

Tsai Shih-Chin¹²^ORCID,Hsueh Pei-Tung³,Hsieh Kuan-Ying⁴^ORCID,Chiu Hui-Min¹⁵,Lee Chuan-Pin²^ORCID

Affiliation:

1. Nuclear Science and Technology Development Center , National Tsing Hua University , 300044 , Hsinchu , Taiwan (ROC)

2. Radioactive Waste Disposal Technology Research and Development Center , National Tsing Hua University , 300044 , Hsinchu , Taiwan (ROC)

3. Institute of Nuclear Engineering and Science , National Tsing Hua University , 300044 , Hsinchu , Taiwan (ROC)

4. Chemistry Division , Institute of Nuclear Energy Research , 32546 , Taoyuan , Taiwan (ROC)

5. Department of Environmental Engineering and Health , Yuanpei University of Medical Technology , 30015 , Hsinchu , Taiwan (ROC)

Abstract

Abstract The nonlinear heterogeneous adsorption behaviors of niobium (Nb) on clay rocks (bentonite and argillite) and granite in synthetic groundwater and seawater systems were evaluated by adsorption experiments, applying two heterogeneity-based isotherm models: the Langmuir–Freundlich (LF) and generalized-Freundlich (GF) models. According to the root mean square error (RMSE) between the experimental results and numerical simulation, the two heterogeneous sorption models (LF and GF), which correspond to a different heterogenous constant (β), were more adequate than Langmuir models for characterizing the Nb adsorption mechanism. The fitting results demonstrated that the sorption of Nb on granite, bentonite, and argillite exhibited a different adsorption affinity spectrum as a result of the heterogeneous mineral surface. Consequently, the Nb sorption capacity of bentonite and argillite was higher than that of granite and was estimated at 9.24E-01 mmol/g for bentonite, 8.44E-01 mmol/g for argillite, and 2.33E-02 mol/kg for granite.

Funder

Ministry of Science and Technology, Taiwan

National Synchrotron Radiation Research Center

Publisher

Walter de Gruyter GmbH

Subject

Safety, Risk, Reliability and Quality,General Materials Science,Nuclear Energy and Engineering,Nuclear and High Energy Physics,Radiation

Link

https://www.degruyter.com/document/doi/10.1515/kern-2023-0059/pdf

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