Levofloxacin Adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> Nanocomposites: Mechanism, and Modeling Using Non-Linear Kinetics and Isotherm Equations
In the present work, the adsorption mechanism and capacity of MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> nanocomposite as an adsorbent were investigated. Levofloxacin (LFX), a widely used antibiotic, was selected as a hazardous model contaminant in aqueous solutions. The surface an...
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| Format: | Article |
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MDPI AG
2022-12-01
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| Series: | Magnetochemistry |
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| Online Access: | https://www.mdpi.com/2312-7481/9/1/9 |
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| author | Tariq J. Al-Musawi Yasir Qasim Almajidi Ethar M. Al-Essa Rosario Mireya Romero-Parra Enas R. Alwaily Nezamaddin Mengelizadeh Fatemeh Ganji Davoud Balarak |
| author_facet | Tariq J. Al-Musawi Yasir Qasim Almajidi Ethar M. Al-Essa Rosario Mireya Romero-Parra Enas R. Alwaily Nezamaddin Mengelizadeh Fatemeh Ganji Davoud Balarak |
| author_sort | Tariq J. Al-Musawi |
| collection | DOAJ |
| description | In the present work, the adsorption mechanism and capacity of MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> nanocomposite as an adsorbent were investigated. Levofloxacin (LFX), a widely used antibiotic, was selected as a hazardous model contaminant in aqueous solutions. The surface and inner characterization of MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> was obtained via SEM/TEM, XRD, BET/BJH, and pH<sub>PZC</sub>. These analyses indicated that MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> possess excellent surface and pore characteristics, e.g., specific surface area, pore volume, and mean pore diameter, which were 72 m<sup>2</sup>/g, 0.51 cm<sup>3</sup>/g, and 65 nm, respectively. The results demonstrate that by supplementing 1 g/L of MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> at experimental conditions of pH value of 5, temperature of 30 °C, initial LFX concentration of 50 mg/L and mixing time of 90 min, a significant outcome of 99.3% removal was achieved. To identify the phenomenon of adsorption, the thermodynamic parameters of ΔH° and ΔS° were calculated, which indicated that the nature of LFX adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> nanocomposite was endothermic and spontaneous. Nine isotherm models, including four two-parameter and five three-parameter models, were investigated. In addition, the regression coefficient as well as five error coefficient models were calculated for nonlinear isotherm models. According to the goodness of fit tests, the equilibrium data were well coordinated with the Freundlich and Sips isotherms. The kinetics study showed that the LFX adsorption data well fitted with pseudo-second-order model, and the adsorption of LFX molecules occurred through several stages from surface to intraparticle diffusion. In conclusion, the present work evinces that LFX wastewater can be efficiently treated via an adsorption process using a MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> nanocomposite. |
| first_indexed | 2024-03-09T11:52:19Z |
| format | Article |
| id | doaj.art-446873bb55884754b417fb4bc1d5c19c |
| institution | Directory Open Access Journal |
| issn | 2312-7481 |
| language | English |
| last_indexed | 2024-03-09T11:52:19Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
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| series | Magnetochemistry |
| spelling | doaj.art-446873bb55884754b417fb4bc1d5c19c2023-11-30T23:12:43ZengMDPI AGMagnetochemistry2312-74812022-12-0191910.3390/magnetochemistry9010009Levofloxacin Adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> Nanocomposites: Mechanism, and Modeling Using Non-Linear Kinetics and Isotherm EquationsTariq J. Al-Musawi0Yasir Qasim Almajidi1Ethar M. Al-Essa2Rosario Mireya Romero-Parra3Enas R. Alwaily4Nezamaddin Mengelizadeh5Fatemeh Ganji6Davoud Balarak7Building and Construction Techniques Engineering Department, Al-Mustaqbal University College, Hillah 51001, IraqDepartment of Pharmacy, Baghdad College of Medical Sciences, Baghdad 10071, IraqDepartment of Civil Engineering, Isra University, Amman 11622, JordanDepartment of General Studies, Universidad Continental, Lima 15000, PeruMicrobiology Research Group, College of Pharmacy, Al-Ayen University, Thi-Qar 64001, IraqDepartment of Environmental Health Engineering, Evas Faculty of Health, Larestan University of Medical Sciences, Larestan 7433116475, IranStudent Research Committee, Zahedan University of Medical Sciences, Zahedan 9816743463, IranDepartment of Environmental Health, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan 9816743463, IranIn the present work, the adsorption mechanism and capacity of MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> nanocomposite as an adsorbent were investigated. Levofloxacin (LFX), a widely used antibiotic, was selected as a hazardous model contaminant in aqueous solutions. The surface and inner characterization of MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> was obtained via SEM/TEM, XRD, BET/BJH, and pH<sub>PZC</sub>. These analyses indicated that MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> possess excellent surface and pore characteristics, e.g., specific surface area, pore volume, and mean pore diameter, which were 72 m<sup>2</sup>/g, 0.51 cm<sup>3</sup>/g, and 65 nm, respectively. The results demonstrate that by supplementing 1 g/L of MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> at experimental conditions of pH value of 5, temperature of 30 °C, initial LFX concentration of 50 mg/L and mixing time of 90 min, a significant outcome of 99.3% removal was achieved. To identify the phenomenon of adsorption, the thermodynamic parameters of ΔH° and ΔS° were calculated, which indicated that the nature of LFX adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> nanocomposite was endothermic and spontaneous. Nine isotherm models, including four two-parameter and five three-parameter models, were investigated. In addition, the regression coefficient as well as five error coefficient models were calculated for nonlinear isotherm models. According to the goodness of fit tests, the equilibrium data were well coordinated with the Freundlich and Sips isotherms. The kinetics study showed that the LFX adsorption data well fitted with pseudo-second-order model, and the adsorption of LFX molecules occurred through several stages from surface to intraparticle diffusion. In conclusion, the present work evinces that LFX wastewater can be efficiently treated via an adsorption process using a MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> nanocomposite.https://www.mdpi.com/2312-7481/9/1/9MWCNTs/CoFe<sub>2</sub>O<sub>4</sub>levofloxacinnanocompositeadsorptionregeneration |
| spellingShingle | Tariq J. Al-Musawi Yasir Qasim Almajidi Ethar M. Al-Essa Rosario Mireya Romero-Parra Enas R. Alwaily Nezamaddin Mengelizadeh Fatemeh Ganji Davoud Balarak Levofloxacin Adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> Nanocomposites: Mechanism, and Modeling Using Non-Linear Kinetics and Isotherm Equations Magnetochemistry MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> levofloxacin nanocomposite adsorption regeneration |
| title | Levofloxacin Adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> Nanocomposites: Mechanism, and Modeling Using Non-Linear Kinetics and Isotherm Equations |
| title_full | Levofloxacin Adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> Nanocomposites: Mechanism, and Modeling Using Non-Linear Kinetics and Isotherm Equations |
| title_fullStr | Levofloxacin Adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> Nanocomposites: Mechanism, and Modeling Using Non-Linear Kinetics and Isotherm Equations |
| title_full_unstemmed | Levofloxacin Adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> Nanocomposites: Mechanism, and Modeling Using Non-Linear Kinetics and Isotherm Equations |
| title_short | Levofloxacin Adsorption onto MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> Nanocomposites: Mechanism, and Modeling Using Non-Linear Kinetics and Isotherm Equations |
| title_sort | levofloxacin adsorption onto mwcnts cofe sub 2 sub o sub 4 sub nanocomposites mechanism and modeling using non linear kinetics and isotherm equations |
| topic | MWCNTs/CoFe<sub>2</sub>O<sub>4</sub> levofloxacin nanocomposite adsorption regeneration |
| url | https://www.mdpi.com/2312-7481/9/1/9 |
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