Immobilizing amino-functionalized mesoporous silica into sodium alginate for efficiently removing low concentrations of uranium
A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, n...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Jiang, Xiaoyu [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2020transfer abstract |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Self-assembled 3D hierarchical MnCO - Rajendiran, Rajmohan ELSEVIER, 2020, Amsterdam [u.a.] |
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| Übergeordnetes Werk: |
volume:247 ; year:2020 ; day:20 ; month:02 ; pages:0 |
| Links: |
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| DOI / URN: |
10.1016/j.jclepro.2019.119162 |
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ELV049001485 |
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| 245 | 1 | 0 | |a Immobilizing amino-functionalized mesoporous silica into sodium alginate for efficiently removing low concentrations of uranium |
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| 520 | |a A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. | ||
| 520 | |a A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. | ||
| 650 | 7 | |a Removal |2 Elsevier | |
| 650 | 7 | |a Uranium |2 Elsevier | |
| 650 | 7 | |a Adsorption |2 Elsevier | |
| 650 | 7 | |a Mesoporous silica |2 Elsevier | |
| 650 | 7 | |a Sodium alginate |2 Elsevier | |
| 700 | 1 | |a Wang, Hongqiang |4 oth | |
| 700 | 1 | |a Wang, Qingliang |4 oth | |
| 700 | 1 | |a Hu, Eming |4 oth | |
| 700 | 1 | |a Duan, Yuanqin |4 oth | |
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10.1016/j.jclepro.2019.119162 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001411.pica (DE-627)ELV049001485 (ELSEVIER)S0959-6526(19)34032-6 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Jiang, Xiaoyu verfasserin aut Immobilizing amino-functionalized mesoporous silica into sodium alginate for efficiently removing low concentrations of uranium 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. Removal Elsevier Uranium Elsevier Adsorption Elsevier Mesoporous silica Elsevier Sodium alginate Elsevier Wang, Hongqiang oth Wang, Qingliang oth Hu, Eming oth Duan, Yuanqin oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:247 year:2020 day:20 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2019.119162 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 247 2020 20 0220 0 |
| spelling |
10.1016/j.jclepro.2019.119162 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001411.pica (DE-627)ELV049001485 (ELSEVIER)S0959-6526(19)34032-6 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Jiang, Xiaoyu verfasserin aut Immobilizing amino-functionalized mesoporous silica into sodium alginate for efficiently removing low concentrations of uranium 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. Removal Elsevier Uranium Elsevier Adsorption Elsevier Mesoporous silica Elsevier Sodium alginate Elsevier Wang, Hongqiang oth Wang, Qingliang oth Hu, Eming oth Duan, Yuanqin oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:247 year:2020 day:20 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2019.119162 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 247 2020 20 0220 0 |
| allfields_unstemmed |
10.1016/j.jclepro.2019.119162 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001411.pica (DE-627)ELV049001485 (ELSEVIER)S0959-6526(19)34032-6 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Jiang, Xiaoyu verfasserin aut Immobilizing amino-functionalized mesoporous silica into sodium alginate for efficiently removing low concentrations of uranium 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. Removal Elsevier Uranium Elsevier Adsorption Elsevier Mesoporous silica Elsevier Sodium alginate Elsevier Wang, Hongqiang oth Wang, Qingliang oth Hu, Eming oth Duan, Yuanqin oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:247 year:2020 day:20 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2019.119162 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 247 2020 20 0220 0 |
| allfieldsGer |
10.1016/j.jclepro.2019.119162 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001411.pica (DE-627)ELV049001485 (ELSEVIER)S0959-6526(19)34032-6 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Jiang, Xiaoyu verfasserin aut Immobilizing amino-functionalized mesoporous silica into sodium alginate for efficiently removing low concentrations of uranium 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. Removal Elsevier Uranium Elsevier Adsorption Elsevier Mesoporous silica Elsevier Sodium alginate Elsevier Wang, Hongqiang oth Wang, Qingliang oth Hu, Eming oth Duan, Yuanqin oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:247 year:2020 day:20 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2019.119162 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 247 2020 20 0220 0 |
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10.1016/j.jclepro.2019.119162 doi /cbs_pica/cbs_olc/import_discovery/elsevier/einzuspielen/GBV00000000001411.pica (DE-627)ELV049001485 (ELSEVIER)S0959-6526(19)34032-6 DE-627 ger DE-627 rakwb eng 540 VZ 35.18 bkl Jiang, Xiaoyu verfasserin aut Immobilizing amino-functionalized mesoporous silica into sodium alginate for efficiently removing low concentrations of uranium 2020transfer abstract nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. Removal Elsevier Uranium Elsevier Adsorption Elsevier Mesoporous silica Elsevier Sodium alginate Elsevier Wang, Hongqiang oth Wang, Qingliang oth Hu, Eming oth Duan, Yuanqin oth Enthalten in Elsevier Science Rajendiran, Rajmohan ELSEVIER Self-assembled 3D hierarchical MnCO 2020 Amsterdam [u.a.] (DE-627)ELV003750353 volume:247 year:2020 day:20 month:02 pages:0 https://doi.org/10.1016/j.jclepro.2019.119162 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U 35.18 Kolloidchemie Grenzflächenchemie VZ AR 247 2020 20 0220 0 |
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immobilizing amino-functionalized mesoporous silica into sodium alginate for efficiently removing low concentrations of uranium |
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Immobilizing amino-functionalized mesoporous silica into sodium alginate for efficiently removing low concentrations of uranium |
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A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. |
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A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. |
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A large volume of wastewater containing low concentrations of uranium is generated owing to the development and utilization of nuclear energy, which poses an environmental hazard. Therefore, an efficient strategy to remove uranium from the wastewater is important. In this study, a novel adsorbent, namely aMSP/SA, was prepared by immobilizing amino-functionalized mesoporous silica (aMSP) with sodium alginate (SA) for removing low concentration hexavalent U(VI), which is mobile and soluble. The effects of pH, initial concentration, time, temperature, coexisting ions, and regeneration on the removal efficiency of uranium by aMSP/SA were investigated. Results show that the saturated adsorption capacity of aMSP/SA for uranium was 210 mg/g at pH 4.0 and 313 K, and the concentration of U(VI) could be reduced from 1.0 mg/L to 1.31 μg/L. The aMSP/SA shows a high efficiency uranium removal of 99.41% in mine water and affinity toward uranium in a mixed metal solution. Additionally, the structure and possible adsorption mechanism of aMSP/SA were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), and energy-dispersive spectrometry (EDS). The main interaction mechanisms may be explained by ion exchange with Ca2+ on carboxyl and coordination with hydroxyl and amino groups. This study highlights that a high removal efficiency (99.87% for 1.0 mg/L) and easy separation of large particle sizes (3–4 mm) makes aMSP/SA a promising material for eliminating low concentration U(VI) in industrial applications. |
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