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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Adsorption Kinetics of 137Cs+/90Sr2+ on Ca‐Bentonite
Wang et al.
137Cs+/90Sr2+ adsorption kinetics on natural Ca‐bentonite under the impact of different adsorption conditions was examined in detail. The results indicate that natural Ca‐bentonite shows a strong adsorption capacity for Cs+/Sr2+. The adsorption reached at equilibrium after 2 hours for Cs+. Cs+/Sr2+removal efficiency reaches the highest when the pH value is 5 to 8 and increases with the increase of Ca‐bentonite adding amount. Cs+ removal efficiency increases with the increase of Cs+ initial concentration, while Sr2+ removal efficiency slightly varies around 70%. The adsorption of Cs+/Sr2+ by Ca‐bentonite follows the pseudo‐second‐order model and is controlled by chemical adsorption. Meanwhile, the results of intraparticle diffusion modelling indicate that intraparticle diffusion is a kinetics controlling step, besides surface adsorption and liquid film diffusion.
Adsorption Kinetics of 137Cs+/90Sr2+ on Ca‐Bentonite
Wang et al.
137Cs+/90Sr2+ adsorption kinetics on natural Ca‐bentonite under the impact of different adsorption conditions was examined in detail. The results indicate that natural Ca‐bentonite shows a strong adsorption capacity for Cs+/Sr2+. The adsorption reached at equilibrium after 2 hours for Cs+. Cs+/Sr2+removal efficiency reaches the highest when the pH value is 5 to 8 and increases with the increase of Ca‐bentonite adding amount. Cs+ removal efficiency increases with the increase of Cs+ initial concentration, while Sr2+ removal efficiency slightly varies around 70%. The adsorption of Cs+/Sr2+ by Ca‐bentonite follows the pseudo‐second‐order model and is controlled by chemical adsorption. Meanwhile, the results of intraparticle diffusion modelling indicate that intraparticle diffusion is a kinetics controlling step, besides surface adsorption and liquid film diffusion.
Adsorption Kinetics of 137Cs+/90Sr2+ on Ca‐Bentonite
Wang et al.
Wang, Rong (Autor:in) / Chu, Yingying (Autor:in) / Chen, Mengjun (Autor:in)
Water Environment Research ; 89 ; 791-797
01.09.2017
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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