Efficient adsorption of Mn(Ⅱ) by layered double hydroxides intercalated with diethylenetriaminepentaacetic acid and the mechanistic study : = Efficient adsorption of Mn(Ⅱ) by layered double hydroxides intercalated with diethylenetriaminepentaacetic acid and the mechanistic study
In this study, greatly enhanced Mn(II) adsorption was achieved by as-synthesized diethylenetriaminepentaacetate acid intercalated Mg/Al layered double hydroxides(LDHsDTPA). The adsorption capacity of LDHs-DTPA was 83.5 mg/g, which is much higher than that of LDHs-EDTA(44.4 mg/g), LDHs-Oxalate(21.6 mg/g) and LDHs(28.8 mg/g). The adsorption data of aqueous Mn(II) using LDHs-DTPA could be well described by the pseudosecond order kinetics and Langmuir isotherm model. Thermodynamics study results also showed that the adsorption process of Mn(II) by LDHs-DTPA was exothermic as indicated by the negative ΔH value. Furthermore, based on the structural, morphological and thermostable features, as well as FT-IR and XPS characterizations of LDHs-DTPA and the pristine LDHs, the adsorption mechanism of Mn(II) was proposed. The carboxyl groups of DTPA were proposed to be the main binding sites for Mn(II), and the hydroxyl groups of LDHs also played a minor role in the adsorption process. Among the three common regeneration reagents, 0.1 mol/L Na_2CO_3 was the best for reusing LDHs-DTPA in Mn(II)adsorption. Besides, the Mn(II) adsorption performance could be hindered in the presence of typical inorganic ions, especially cations. Further specific modifications of LDHs-DTPA are suggested to get more selective adsorption of Mn(II) in practical applications..
In this study, greatly enhanced Mn(Ⅱ) adsorption was achieved by as-synthesized diethylenetriaminepentaacetate acid intercalated Mg/Al layered double hydroxides(LDHsDTPA). The adsorption capacity of LDHs-DTPA was 83.5 mg/g, which is much higher than that of LDHs-EDTA(44.4 mg/g), LDHs-Oxalate(21.6 mg/g) and LDHs(28.8 mg/g). The adsorption data of aqueous Mn(Ⅱ) using LDHs-DTPA could be well described by the pseudosecond order kinetics and Langmuir isotherm model. Thermodynamics study results also showed that the adsorption process of Mn(Ⅱ) by LDHs-DTPA was exothermic as indicated by the negative ΔH value. Furthermore, based on the structural, morphological and thermostable features, as well as FT-IR and XPS characterizations of LDHs-DTPA and the pristine LDHs, the adsorption mechanism of Mn(Ⅱ) was proposed. The carboxyl groups of DTPA were proposed to be the main binding sites for Mn(Ⅱ), and the hydroxyl groups of LDHs also played a minor role in the adsorption process. Among the three common regeneration reagents, 0.1 mol/L Na_2CO_3 was the best for reusing LDHs-DTPA in Mn(Ⅱ)adsorption. Besides, the Mn(Ⅱ) adsorption performance could be hindered in the presence of typical inorganic ions, especially cations. Further specific modifications of LDHs-DTPA are suggested to get more selective adsorption of Mn(Ⅱ) in practical applications..
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2019-11-10 2019 |
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| Erschienen: |
2019-11-10 |
| Enthalten in: |
Zur Gesamtaufnahme - year:2019 |
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| Enthalten in: |
Journal of environmental sciences (China) - (2019), 11 vom: 10. Nov., Seite 56-65 Original Letters: Enthalten in (DE-576)284926337 (DE-576)284926337 |
| Reihe: |
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| Sprache: |
Chinesisch |
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| Weiterer Titel: |
Efficient adsorption of Mn(Ⅱ) by layered double hydroxides intercalated with diethylenetriaminepentaacetic acid and the mechanistic study |
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| Beteiligte Personen: |
Mingjie Huang [VerfasserIn] |
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| Links: |
oversea.cnki.net [lizenzpflichtig] |
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| Anmerkungen: |
Author info:Mingjie Huang;Yingxin Zhang;Wei Xiang;Tao Zhou;Xiaohui Wu;Juan Mao;School of Environmental Science and Engineering, Huazhong University of Science and Technology;Key Laboratory of Water and Wastewater Treatment (HUST),MOHURD |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
CAJ640795714 |
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| 245 | 1 | 0 | |a Efficient adsorption of Mn(Ⅱ) by layered double hydroxides intercalated with diethylenetriaminepentaacetic acid and the mechanistic study |b = Efficient adsorption of Mn(Ⅱ) by layered double hydroxides intercalated with diethylenetriaminepentaacetic acid and the mechanistic study |
| 246 | 3 | 1 | |a Efficient adsorption of Mn(Ⅱ) by layered double hydroxides intercalated with diethylenetriaminepentaacetic acid and the mechanistic study |
| 264 | 1 | |c 2019-11-10 | |
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| 500 | |a Author info:Mingjie Huang;Yingxin Zhang;Wei Xiang;Tao Zhou;Xiaohui Wu;Juan Mao;School of Environmental Science and Engineering, Huazhong University of Science and Technology;Key Laboratory of Water and Wastewater Treatment (HUST),MOHURD | ||
| 520 | |a In this study, greatly enhanced Mn(II) adsorption was achieved by as-synthesized diethylenetriaminepentaacetate acid intercalated Mg/Al layered double hydroxides(LDHsDTPA). The adsorption capacity of LDHs-DTPA was 83.5 mg/g, which is much higher than that of LDHs-EDTA(44.4 mg/g), LDHs-Oxalate(21.6 mg/g) and LDHs(28.8 mg/g). The adsorption data of aqueous Mn(II) using LDHs-DTPA could be well described by the pseudosecond order kinetics and Langmuir isotherm model. Thermodynamics study results also showed that the adsorption process of Mn(II) by LDHs-DTPA was exothermic as indicated by the negative ΔH value. Furthermore, based on the structural, morphological and thermostable features, as well as FT-IR and XPS characterizations of LDHs-DTPA and the pristine LDHs, the adsorption mechanism of Mn(II) was proposed. The carboxyl groups of DTPA were proposed to be the main binding sites for Mn(II), and the hydroxyl groups of LDHs also played a minor role in the adsorption process. Among the three common regeneration reagents, 0.1 mol/L Na_2CO_3 was the best for reusing LDHs-DTPA in Mn(II)adsorption. Besides, the Mn(II) adsorption performance could be hindered in the presence of typical inorganic ions, especially cations. Further specific modifications of LDHs-DTPA are suggested to get more selective adsorption of Mn(II) in practical applications. | ||
| 520 | |a In this study, greatly enhanced Mn(Ⅱ) adsorption was achieved by as-synthesized diethylenetriaminepentaacetate acid intercalated Mg/Al layered double hydroxides(LDHsDTPA). The adsorption capacity of LDHs-DTPA was 83.5 mg/g, which is much higher than that of LDHs-EDTA(44.4 mg/g), LDHs-Oxalate(21.6 mg/g) and LDHs(28.8 mg/g). The adsorption data of aqueous Mn(Ⅱ) using LDHs-DTPA could be well described by the pseudosecond order kinetics and Langmuir isotherm model. Thermodynamics study results also showed that the adsorption process of Mn(Ⅱ) by LDHs-DTPA was exothermic as indicated by the negative ΔH value. Furthermore, based on the structural, morphological and thermostable features, as well as FT-IR and XPS characterizations of LDHs-DTPA and the pristine LDHs, the adsorption mechanism of Mn(Ⅱ) was proposed. The carboxyl groups of DTPA were proposed to be the main binding sites for Mn(Ⅱ), and the hydroxyl groups of LDHs also played a minor role in the adsorption process. Among the three common regeneration reagents, 0.1 mol/L Na_2CO_3 was the best for reusing LDHs-DTPA in Mn(Ⅱ)adsorption. Besides, the Mn(Ⅱ) adsorption performance could be hindered in the presence of typical inorganic ions, especially cations. Further specific modifications of LDHs-DTPA are suggested to get more selective adsorption of Mn(Ⅱ) in practical applications. | ||
| 610 | 2 | 4 | |a School of Environmental Science and Engineering, Huazhong University of Science and Technology |
| 610 | 2 | 4 | |a Key Laboratory of Water and Wastewater Treatment (HUST),MOHURD |
| 650 | 4 | |a 吸附 | |
| 650 | 4 | |a 表面现象的物理化学 | |
| 650 | 4 | |a 物理化学（理论化学）、化学物理 | |
| 650 | 4 | |a 化学 | |
| 650 | 4 | |a 数理科学和化学 | |
| 650 | 4 | |a 三废处理与综合利用 | |
| 650 | 4 | |a 环境科学、安全科学 | |
| 650 | 4 | |a Chemistry | |
| 650 | 4 | |a Environment Science and Resources Utilization | |
| 650 | 4 | |a 理工B(化学化工冶金环境矿业) | |
| 650 | 4 | |a Chemistry/ Metallurgy/ Environment/ Mine Industry | |
| 650 | 4 | |a Layered double hydroxides | |
| 650 | 4 | |a Diethylenetriaminepentaacetate acid(DTPA) | |
| 650 | 4 | |a Mn(Ⅱ) | |
| 650 | 4 | |a Adsorption | |
| 650 | 4 | |a Inorganic ions | |
| 700 | 0 | |a Yingxin Zhang |4 oth | |
| 700 | 0 | |a Wei Xiang |4 oth | |
| 700 | 0 | |a Tao Zhou |4 oth | |
| 700 | 0 | |a Xiaohui Wu |4 oth | |
| 700 | 0 | |a Juan Mao |4 oth | |
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