Comparative study on characteristics and mechanism of levofloxacin adsorption on swine manure biochar

Wang, Zhirou; Jang, Hyun Min

doi:10.1016/j.biortech.2022.127025

Cited by 42 publications

(11 citation statements)

References 47 publications

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“…Furthermore, the q e values of 11.9012 and 60.2306 mg g −1 obtained from the pseudo-second-order model were closer to the experimental values of 12.3862 and 58.0110 mg g −1 . These results confirmed that the adsorption of OFX on MBC and FMBC was dominated by a chemisorption mechanism, 40 which was consistent with the kinetic behavior of adsorption reported by Yongfei Ma et al 41…”

Section: Resultssupporting

confidence: 90%

“…From Fig. S3(a) and (b), † it was seen that the adsorption amounts of BC, MBC, and FMBC increased rapidly within the initial 5, 10, and 30 min, then gradually slowed down, and reached the equilibrium These results conrmed that the adsorption of OFX on MBC and FMBC was dominated by a chemisorption mechanism, 40 which was consistent with the kinetic behavior of adsorption reported by Yongfei Ma et al 41 To further identify the possible rate-limiting step and diffusion mechanisms of OFX adsorption onto BC, MBC and FMBC, thus intraparticle diffusion model was adopted to t the experimental data, the tted results were in Table S2. † However, it failed to demonstrate a good agreement with the experimental data since the non-linear regression coefficient (R 2 ) of BC was signicantly lower compared to pseudo-rst-order and pseudo-second-order models.…”

Section: Adsorption Kineticsmentioning

confidence: 80%

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A stable Fe/Co bimetallic modified biochar for ofloxacin removal from water: adsorption behavior and mechanisms

Hao

et al. 2022

RSC Adv.

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Section: Resultssupporting

confidence: 90%

Section: Adsorption Kineticsmentioning

confidence: 80%

A stable Fe/Co bimetallic modified biochar for ofloxacin removal from water: adsorption behavior and mechanisms

Hao

et al. 2022

RSC Adv.

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“…The calculated B value was ˃ 1 with high R 2 and low error functions from the nonlinear Temkin model (Tables 2 and S3), which indicates that there were pores in Ch-W and electrostatic interactions between Ch-W and levofloxacin due to the adsorption process occurred exothermically. This is in line with Jang et al 2018;Wang and Jang 2022. Nonlinear kinetics illustrates the maximum adsorption capacity reached within 20 min and equilibrium at 45 min (Fig. 6d).…”

Section: The Ch-w Dose Effectsupporting

confidence: 87%

Decontamination of levofloxacin from water using a novel chitosan–walnut shells composite: linear, nonlinear, and optimization modeling

Mahmoud,

Fawzy

2023

Appl Water Sci

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Chitosan–walnut shells (Ch–W) composite was tested for the removal of levofloxacin from water. Various experimental factors were examined at different contact time intervals. The prepared composite exhibited maximum uptake capacity of 7.43 mg g−1 for levofloxacin with 0.5 g L−1 Ch–W dose at 45 min and pH = 7. Linear and nonlinear isotherm/kinetic models have been investigated, and the pertinency of the models was confirmed by correlation coefficients (R2) and error functions. Consequently, the adsorption of levofloxacin could be more accurately described by the nonlinear pseudo-second-order and Langmuir as well as Temkin models (R2 ˃ 0.98). Optimization modeling of levofloxacin was performed using a central composite design. The independent parameters; initial concentration, pH, and Ch–W dose, were selected while levofloxacin removal was the response. The maximum levofloxacin removal was 75.7% and 94.2% at concentrations of 4 mg L−1 and 2 mg L−1, respectively. Furthermore, 3D surface plots with the interaction effects of the investigated factors are presented. The developed model was reliable for further study and prediction owing to the closeness between the experimental and predicted values. The individual and interacting factors were found to be significant except for “concentration x dose” based on the ANOVA. The models confirmed the experimental results with R2, R2adjusted, and R2predicted values ˃ 0.939. The continuity adsorption cycles were tested for reuse and revealed that the removal of levofloxacin was decreased ~ 23% after six cycles. Hence, the prepared composite has the potential to remove antibiotics from water.

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“…Levofloxacin (LOF) is a broad-spectrum antibiotic whose structure contains nitrogen, oxygen, and fluorine atoms, negatively charged groups (-COOH), and aromatic rings (quinolones) [32]. As mentioned in the description of the FTIR analysis, the obtained GO/CS composites can easily form hydrogen bonds, electrostatic attraction, and π-π stacking interactions with LOF [15,33,34].…”

Section: Adsorption Performance Of Go/cs Aerogel Microspheresmentioning

confidence: 99%

Adsorption of Levofloxacin onto Graphene Oxide/Chitosan Composite Aerogel Microspheres

Miao,

Gao,

Han

et al. 2024

Gels

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The removal of pharmaceutical residues from water resources using bio-based materials is very important for human safety and health. Bio-based graphene oxide/chitosan (GO/CS) aerogel microspheres were fabricated with emulsification and cross-linking, followed by freeze drying, and were used for the adsorption of levofloxacin (LOF). The obtained GO/CS aerogel microspheres were characterized with scanning electron microscopy (SEM), Fourier-transform infrared (FTIR), and thermogravimetry (TG). The effects of GO content, pH value, and temperature on their adsorption capacity were investigated. With the incorporation of 40 wt% GO, the adsorption capacity increased from 9.9 to 45.6 mg/g, and the highest adsorption capacity, 51.5 mg/g, was obtained at pH = 8 and T = 25 °C. In addition, to obtain deeper insight into the adsorption process, the thermodynamics and kinetics of the process were also investigated with four different models of LOF adsorption. The thermodynamic modeling results revealed that LOF adsorption is exothermic, and the kinetic investigation demonstrated that LOF adsorption is generally consistent with a pseudo-first-order rate law.

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Comparative study on characteristics and mechanism of levofloxacin adsorption on swine manure biochar

Cited by 42 publications

References 47 publications

A stable Fe/Co bimetallic modified biochar for ofloxacin removal from water: adsorption behavior and mechanisms

A stable Fe/Co bimetallic modified biochar for ofloxacin removal from water: adsorption behavior and mechanisms

Decontamination of levofloxacin from water using a novel chitosan–walnut shells composite: linear, nonlinear, and optimization modeling

Adsorption of Levofloxacin onto Graphene Oxide/Chitosan Composite Aerogel Microspheres

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