Pencil graphite supported nano zero-valent iron for removal of levofloxacin from aqueous solution: Effects of pH, kinetic and biological activity
A highly efficient, and potentially recyclable antibacterial composite was prepared in an efficient simple process. Antimicrobial levofloxacin (LEV) was used to functionalize the surface of nano zero-valent iron (Fe0) supported by pencil graphite (PG). The surface morphology, elemental composition,...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-12-01
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| Series: | Arabian Journal of Chemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1878535222006256 |
| _version_ | 1811209985939472384 |
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| author | Abdulla S. Idrees Saleh M. Sulaiman Mohammed H. Al-Jabari Mazen K. Nazal Asem M. Mubarak Leena N. Al-Rimawi |
| author_facet | Abdulla S. Idrees Saleh M. Sulaiman Mohammed H. Al-Jabari Mazen K. Nazal Asem M. Mubarak Leena N. Al-Rimawi |
| author_sort | Abdulla S. Idrees |
| collection | DOAJ |
| description | A highly efficient, and potentially recyclable antibacterial composite was prepared in an efficient simple process. Antimicrobial levofloxacin (LEV) was used to functionalize the surface of nano zero-valent iron (Fe0) supported by pencil graphite (PG). The surface morphology, elemental composition, particle size, and removal efficiency of the PG-Fe0 composite were confirmed by UV, FTIR, EDX, SEM, TEM, and XRD techniques. The potential influence of pH, adsorbate concentration, contact time, and temperature on the removal efficiency of LEV by the magnetic composite (PG-Fe0) from an aqueous solution was investigated. The well-known established models were used to examine the adsorption isotherms, and the results showed that the kinetic adsorption data fit well with the pseudo-second-order model, with the highest removal efficiency achieved from pH 5–7 (85%). The maximum adsorption capacity qmax on the surface of Fe0-PG for LEV was obtained using the Langmuir isotherm at pH 6.5 (66.3 mg/g) and pH 8 (11.4 mg/g). All adsorption thermodynamic parameters at pH 6.5 suggested a chemisorption endothermic natural process ΔHo(44.4 kJ/mol), and the negative value of free Gibbs energy indicated a spontaneous process at an ambient temperature. Furthermore, the removal efficiency of the PG-Fe0 composite was better than that of the Fenton-like catalyst performance for both Fe0 and PG-Fe0. Reusability and antibacterial activity of adsorbed LEV on the surface of PG-Fe0 were investigated against various types of gram-positive bacteria; (E. faecalis, S. epidermidis, and S. aureus) and gram-negative; (E. coli, K. pneumonia, and P. Mirabilia) via agar well diffusion method. Finally, the magnetic feature of the PG-Fe0-LEV composite has numerous potential for recovery and reuse. |
| first_indexed | 2024-04-12T04:48:24Z |
| format | Article |
| id | doaj.art-c18400b8f5114d98ac82beda113659da |
| institution | Directory Open Access Journal |
| issn | 1878-5352 |
| language | English |
| last_indexed | 2024-04-12T04:48:24Z |
| publishDate | 2022-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Arabian Journal of Chemistry |
| spelling | doaj.art-c18400b8f5114d98ac82beda113659da2022-12-22T03:47:24ZengElsevierArabian Journal of Chemistry1878-53522022-12-011512104309Pencil graphite supported nano zero-valent iron for removal of levofloxacin from aqueous solution: Effects of pH, kinetic and biological activityAbdulla S. Idrees0Saleh M. Sulaiman1Mohammed H. Al-Jabari2Mazen K. Nazal3Asem M. Mubarak4Leena N. Al-Rimawi5Department of Chemistry, Faculty of Science, Birzeit University, Birzeit, P.O. Box 14, Ramallah, West Bank, Palestine, State ofDepartment of Chemistry, Faculty of Science, Birzeit University, Birzeit, P.O. Box 14, Ramallah, West Bank, Palestine, State of; Corresponding authors.Department of Chemistry, Faculty of Science, Birzeit University, Birzeit, P.O. Box 14, Ramallah, West Bank, Palestine, State of; Corresponding authors.Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi ArabiaDepartment of Chemistry, Faculty of Science, Birzeit University, Birzeit, P.O. Box 14, Ramallah, West Bank, Palestine, State ofDepartment of Chemistry, Faculty of Science, Birzeit University, Birzeit, P.O. Box 14, Ramallah, West Bank, Palestine, State ofA highly efficient, and potentially recyclable antibacterial composite was prepared in an efficient simple process. Antimicrobial levofloxacin (LEV) was used to functionalize the surface of nano zero-valent iron (Fe0) supported by pencil graphite (PG). The surface morphology, elemental composition, particle size, and removal efficiency of the PG-Fe0 composite were confirmed by UV, FTIR, EDX, SEM, TEM, and XRD techniques. The potential influence of pH, adsorbate concentration, contact time, and temperature on the removal efficiency of LEV by the magnetic composite (PG-Fe0) from an aqueous solution was investigated. The well-known established models were used to examine the adsorption isotherms, and the results showed that the kinetic adsorption data fit well with the pseudo-second-order model, with the highest removal efficiency achieved from pH 5–7 (85%). The maximum adsorption capacity qmax on the surface of Fe0-PG for LEV was obtained using the Langmuir isotherm at pH 6.5 (66.3 mg/g) and pH 8 (11.4 mg/g). All adsorption thermodynamic parameters at pH 6.5 suggested a chemisorption endothermic natural process ΔHo(44.4 kJ/mol), and the negative value of free Gibbs energy indicated a spontaneous process at an ambient temperature. Furthermore, the removal efficiency of the PG-Fe0 composite was better than that of the Fenton-like catalyst performance for both Fe0 and PG-Fe0. Reusability and antibacterial activity of adsorbed LEV on the surface of PG-Fe0 were investigated against various types of gram-positive bacteria; (E. faecalis, S. epidermidis, and S. aureus) and gram-negative; (E. coli, K. pneumonia, and P. Mirabilia) via agar well diffusion method. Finally, the magnetic feature of the PG-Fe0-LEV composite has numerous potential for recovery and reuse.http://www.sciencedirect.com/science/article/pii/S1878535222006256AdsorptionAntibacterial agentFluoroquinoloneFe0Composite |
| spellingShingle | Abdulla S. Idrees Saleh M. Sulaiman Mohammed H. Al-Jabari Mazen K. Nazal Asem M. Mubarak Leena N. Al-Rimawi Pencil graphite supported nano zero-valent iron for removal of levofloxacin from aqueous solution: Effects of pH, kinetic and biological activity Arabian Journal of Chemistry Adsorption Antibacterial agent Fluoroquinolone Fe0 Composite |
| title | Pencil graphite supported nano zero-valent iron for removal of levofloxacin from aqueous solution: Effects of pH, kinetic and biological activity |
| title_full | Pencil graphite supported nano zero-valent iron for removal of levofloxacin from aqueous solution: Effects of pH, kinetic and biological activity |
| title_fullStr | Pencil graphite supported nano zero-valent iron for removal of levofloxacin from aqueous solution: Effects of pH, kinetic and biological activity |
| title_full_unstemmed | Pencil graphite supported nano zero-valent iron for removal of levofloxacin from aqueous solution: Effects of pH, kinetic and biological activity |
| title_short | Pencil graphite supported nano zero-valent iron for removal of levofloxacin from aqueous solution: Effects of pH, kinetic and biological activity |
| title_sort | pencil graphite supported nano zero valent iron for removal of levofloxacin from aqueous solution effects of ph kinetic and biological activity |
| topic | Adsorption Antibacterial agent Fluoroquinolone Fe0 Composite |
| url | http://www.sciencedirect.com/science/article/pii/S1878535222006256 |
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