Adsorption Studies of Ternary Metal Ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) from Water Using Zeolite@Magnetic Nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs)
The mixture of three metal ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) is commonly found in radioactive waste, which induces several negative health effects. The removal of multiple metal ions is a true challenge for researchers due to the competit...
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2024-10-01
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| author | Tung Van Nguyen Lien Thi Nguyen Ha Thi Thu Nguyen Thu-Huong Le |
| author_facet | Tung Van Nguyen Lien Thi Nguyen Ha Thi Thu Nguyen Thu-Huong Le |
| author_sort | Tung Van Nguyen |
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| description | The mixture of three metal ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) is commonly found in radioactive waste, which induces several negative health effects. The removal of multiple metal ions is a true challenge for researchers due to the competitive adsorption of ions onto adsorbents. In this study, three metal ions, namely Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>, have been successfully removed simultaneously from water using zeolite@magnetic nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs). The optimized condition for the adsorption of ternary metal ions was obtained at an adsorbent weight of 0.2, pH of 6.0~7.0, and contact time of 60 min. The adsorption mechanism of ternary metal ions onto the surface of Z@Fe<sub>3</sub>O<sub>4</sub> NPs was studied using the Pseudo-first-order, Pseudo-second-order, Elovich, and Intra-particle diffusion models. The Dubinin–Radushkevich Temkin, Freundlich, and Langmuir isotherm models were used to study the isotherm adsorption. The ternary metal ion adsorption (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) on Z@Fe<sub>3</sub>O<sub>4</sub> NPs was followed by the Pseudo-second-order model (PSO) with correlation coefficient (R<sup>2</sup>) range of 0.9826–0.9997. Meanwhile, the adsorption isotherms of ternary metal ions on Z@Fe<sub>3</sub>O<sub>4</sub> NPs were in line with the Langmuir model with R<sup>2</sup> values higher than 0.9206, suggesting monolayer chemisorption with maximum adsorption capacities of 48.31, 15.02, and 10.41 mg/g for Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>, respectively. Thus, the selectivity trend in the ternary metal ions system towards the Z@Fe<sub>3</sub>O<sub>4</sub> NPs is observed to be Cs<sup>+</sup> > Sr<sup>2+</sup> > Co<sup>2+</sup>, which indicates that the competitive effect of Cs<sup>+</sup> is the strongest compared to Sr<sup>2+</sup> and Co<sup>2+</sup>ions. |
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| spelling | doaj-art-d43f21e7bf7441249d3ae33dc3deaa0f2025-08-20T01:54:01ZengMDPI AGInorganics2304-67402024-10-01121127610.3390/inorganics12110276Adsorption Studies of Ternary Metal Ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) from Water Using Zeolite@Magnetic Nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs)Tung Van Nguyen0Lien Thi Nguyen1Ha Thi Thu Nguyen2Thu-Huong Le3Institute for Technology of Radioactive and Rare Elements (ITRRE), Hanoi 1000, VietnamInstitute for Technology of Radioactive and Rare Elements (ITRRE), Hanoi 1000, VietnamInstitute for Technology of Radioactive and Rare Elements (ITRRE), Hanoi 1000, VietnamFaculty of Chemistry and Environment, Thuyloi University, Hanoi 1000, VietnamThe mixture of three metal ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) is commonly found in radioactive waste, which induces several negative health effects. The removal of multiple metal ions is a true challenge for researchers due to the competitive adsorption of ions onto adsorbents. In this study, three metal ions, namely Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>, have been successfully removed simultaneously from water using zeolite@magnetic nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs). The optimized condition for the adsorption of ternary metal ions was obtained at an adsorbent weight of 0.2, pH of 6.0~7.0, and contact time of 60 min. The adsorption mechanism of ternary metal ions onto the surface of Z@Fe<sub>3</sub>O<sub>4</sub> NPs was studied using the Pseudo-first-order, Pseudo-second-order, Elovich, and Intra-particle diffusion models. The Dubinin–Radushkevich Temkin, Freundlich, and Langmuir isotherm models were used to study the isotherm adsorption. The ternary metal ion adsorption (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) on Z@Fe<sub>3</sub>O<sub>4</sub> NPs was followed by the Pseudo-second-order model (PSO) with correlation coefficient (R<sup>2</sup>) range of 0.9826–0.9997. Meanwhile, the adsorption isotherms of ternary metal ions on Z@Fe<sub>3</sub>O<sub>4</sub> NPs were in line with the Langmuir model with R<sup>2</sup> values higher than 0.9206, suggesting monolayer chemisorption with maximum adsorption capacities of 48.31, 15.02, and 10.41 mg/g for Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>, respectively. Thus, the selectivity trend in the ternary metal ions system towards the Z@Fe<sub>3</sub>O<sub>4</sub> NPs is observed to be Cs<sup>+</sup> > Sr<sup>2+</sup> > Co<sup>2+</sup>, which indicates that the competitive effect of Cs<sup>+</sup> is the strongest compared to Sr<sup>2+</sup> and Co<sup>2+</sup>ions.https://www.mdpi.com/2304-6740/12/11/276ternary metal ionszeolite@magnetic nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub>NPs)adsorption kineticadsorption isotherm |
| spellingShingle | Tung Van Nguyen Lien Thi Nguyen Ha Thi Thu Nguyen Thu-Huong Le Adsorption Studies of Ternary Metal Ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) from Water Using Zeolite@Magnetic Nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs) Inorganics ternary metal ions zeolite@magnetic nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub>NPs) adsorption kinetic adsorption isotherm |
| title | Adsorption Studies of Ternary Metal Ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) from Water Using Zeolite@Magnetic Nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs) |
| title_full | Adsorption Studies of Ternary Metal Ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) from Water Using Zeolite@Magnetic Nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs) |
| title_fullStr | Adsorption Studies of Ternary Metal Ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) from Water Using Zeolite@Magnetic Nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs) |
| title_full_unstemmed | Adsorption Studies of Ternary Metal Ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) from Water Using Zeolite@Magnetic Nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs) |
| title_short | Adsorption Studies of Ternary Metal Ions (Cs<sup>+</sup>, Sr<sup>2+</sup>, and Co<sup>2+</sup>) from Water Using Zeolite@Magnetic Nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub> NPs) |
| title_sort | adsorption studies of ternary metal ions cs sup sup sr sup 2 sup and co sup 2 sup from water using zeolite magnetic nanoparticles z fe sub 3 sub o sub 4 sub nps |
| topic | ternary metal ions zeolite@magnetic nanoparticles (Z@Fe<sub>3</sub>O<sub>4</sub>NPs) adsorption kinetic adsorption isotherm |
| url | https://www.mdpi.com/2304-6740/12/11/276 |
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