Enhanced Removal of Sulfonated Lignite from Oil Wastewater with Multidimensional MgAl-LDH Nanoparticles
In this study, hierarchical MgAl-LDH (layered double hydroxide) nanoparticles with a flower-like morphology were prepared under a hydrothermal condition by employing worm-like micelles formed by cetyltrimethylammonium bromide (CTAB) and salicylic acid (SA) as templates. The morphology and structure...
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MDPI AG
2021-03-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/4/861 |
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| author | Ling Zhou Michal Slaný Bingbing Bai Weichao Du Chengtun Qu Jie Zhang Ying Tang |
| author_facet | Ling Zhou Michal Slaný Bingbing Bai Weichao Du Chengtun Qu Jie Zhang Ying Tang |
| author_sort | Ling Zhou |
| collection | DOAJ |
| description | In this study, hierarchical MgAl-LDH (layered double hydroxide) nanoparticles with a flower-like morphology were prepared under a hydrothermal condition by employing worm-like micelles formed by cetyltrimethylammonium bromide (CTAB) and salicylic acid (SA) as templates. The morphology and structure of the materials were characterized by Brunauer–Emmett–Teller (BET), SEM, and XRD analyses. The performance for the adsorption of sulfonated lignite (SL) was also investigated in detail. FTIR was used to detect the presence of active functional groups and determine whether they play important roles in adsorption. The results showed that the hierarchical MgAl-LDH nanoparticles with a specific surface area of 126.31 m<sup>2</sup>/g possessed a flower-like morphology and meso–macroporous structures. The adsorption capacity was high—its value was 1014.20 mg/g at a temperature of 298 K and an initial pH = 7, which was higher than traditional MgAl-LDH (86 mg/g). The adsorption process of sulfonated lignite followed the pseudo-second-order kinetics model and conformed to Freundlich isotherm model with a spontaneous exothermic nature. In addition, the hierarchical MgAl-LDH could be regenerated and used, and the adsorption was high after three adsorption cycles. The main adsorption mechanisms were electrostatic attraction and ion exchange between the hierarchical MgAl-LDH and sulfonated lignite. |
| first_indexed | 2024-03-10T12:50:12Z |
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| id | doaj.art-4bc752844dff417783ef39ddda390dca |
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| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T12:50:12Z |
| publishDate | 2021-03-01 |
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| series | Nanomaterials |
| spelling | doaj.art-4bc752844dff417783ef39ddda390dca2023-11-21T13:07:06ZengMDPI AGNanomaterials2079-49912021-03-0111486110.3390/nano11040861Enhanced Removal of Sulfonated Lignite from Oil Wastewater with Multidimensional MgAl-LDH NanoparticlesLing Zhou0Michal Slaný1Bingbing Bai2Weichao Du3Chengtun Qu4Jie Zhang5Ying Tang6Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaInstitute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, 845 36 Bratislava, SlovakiaShaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaShaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaShaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaShaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaShaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields, College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, ChinaIn this study, hierarchical MgAl-LDH (layered double hydroxide) nanoparticles with a flower-like morphology were prepared under a hydrothermal condition by employing worm-like micelles formed by cetyltrimethylammonium bromide (CTAB) and salicylic acid (SA) as templates. The morphology and structure of the materials were characterized by Brunauer–Emmett–Teller (BET), SEM, and XRD analyses. The performance for the adsorption of sulfonated lignite (SL) was also investigated in detail. FTIR was used to detect the presence of active functional groups and determine whether they play important roles in adsorption. The results showed that the hierarchical MgAl-LDH nanoparticles with a specific surface area of 126.31 m<sup>2</sup>/g possessed a flower-like morphology and meso–macroporous structures. The adsorption capacity was high—its value was 1014.20 mg/g at a temperature of 298 K and an initial pH = 7, which was higher than traditional MgAl-LDH (86 mg/g). The adsorption process of sulfonated lignite followed the pseudo-second-order kinetics model and conformed to Freundlich isotherm model with a spontaneous exothermic nature. In addition, the hierarchical MgAl-LDH could be regenerated and used, and the adsorption was high after three adsorption cycles. The main adsorption mechanisms were electrostatic attraction and ion exchange between the hierarchical MgAl-LDH and sulfonated lignite.https://www.mdpi.com/2079-4991/11/4/861sulfonated lignitehierarchical hydrotalciteadsorption water treatmentMgAl-LDH nanoparticlesclay minerals |
| spellingShingle | Ling Zhou Michal Slaný Bingbing Bai Weichao Du Chengtun Qu Jie Zhang Ying Tang Enhanced Removal of Sulfonated Lignite from Oil Wastewater with Multidimensional MgAl-LDH Nanoparticles Nanomaterials sulfonated lignite hierarchical hydrotalcite adsorption water treatment MgAl-LDH nanoparticles clay minerals |
| title | Enhanced Removal of Sulfonated Lignite from Oil Wastewater with Multidimensional MgAl-LDH Nanoparticles |
| title_full | Enhanced Removal of Sulfonated Lignite from Oil Wastewater with Multidimensional MgAl-LDH Nanoparticles |
| title_fullStr | Enhanced Removal of Sulfonated Lignite from Oil Wastewater with Multidimensional MgAl-LDH Nanoparticles |
| title_full_unstemmed | Enhanced Removal of Sulfonated Lignite from Oil Wastewater with Multidimensional MgAl-LDH Nanoparticles |
| title_short | Enhanced Removal of Sulfonated Lignite from Oil Wastewater with Multidimensional MgAl-LDH Nanoparticles |
| title_sort | enhanced removal of sulfonated lignite from oil wastewater with multidimensional mgal ldh nanoparticles |
| topic | sulfonated lignite hierarchical hydrotalcite adsorption water treatment MgAl-LDH nanoparticles clay minerals |
| url | https://www.mdpi.com/2079-4991/11/4/861 |
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