| Autor: |
Laddha H; Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India., Sharma P; Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India., Jadhav NB; Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India., Abedeen MZ; Materials Research Centre, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India., Gupta R; Department of Chemistry, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India.; Materials Research Centre, Malaviya National Institute of Technology Jaipur, Jaipur 302017, India. |
| Jazyk: |
angličtina |
| Zdroj: |
Langmuir : the ACS journal of surfaces and colloids [Langmuir] 2023 Dec 12; Vol. 39 (49), pp. 17756-17769. Date of Electronic Publication: 2023 Nov 30. |
| DOI: |
10.1021/acs.langmuir.3c02385 |
| Abstrakt: |
Antimicrobial resistance (AMR) is on an upsurge as more and more broad-spectrum antibiotics are being used haphazardly, resulting in imbalances in the ecosystem and disrupting common/systematic clinical protocols. To combat this issue, metal-organic framework embedded zinc-copper-benzenedicarboxylate@calcium alginate composite beads (Zn-Cu-BDC@CA CBs) were synthesized and utilized for the adsorption of tetracycline (TC) from water. The surface morphology, presence of functional groups, surface area, and thermal stability of Zn-Cu-BDC@CA CBs were evaluated by field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmett-Teller (BET), and thermal gravimetric analysis (TGA), respectively. Batch adsorption experiments were also carried out to optimize the adsorption performance of Zn-Cu-BDC@CA CBs for TC by adjusting the key parameters, including pH of the solution, contact time, adsorbent dosage, temperature, and initial concentration of TC. From the RSM model, 96.8% removal of TC takes place under the optimum conditions (pH = 7.3, mass = 17.2 mg, concentration = 21.3 ppm, time = 3.4 h, and temperature = 31.8 °C), which aligns closely with the experimental batch study, where the addition of 20 mg of adsorbent to a 20 mL TC solution (20 mg/L) at a pH of 7 and a temperature of 27 °C yielded an impressive TC removal efficiency of 96.55% within 180 min. Zn-Cu-BDC@CA CBs possess homogeneous adsorption surfaces, and TC is adsorbed via monolayer chemisorption, according to the results derived from the Langmuir isotherm model and pseudo-second-order kinetic model. The thermodynamic analysis indicated that the adsorption process is both endothermic and spontaneous. In their entirety, the synthesized Zn-Cu-BDC@CA CBs exhibit certain operational advantages, such as simple separation, satisfactory adsorption performance, and decent recyclability, indicating their viability for industrial application of elimination of TC residues from aquatic environments. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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