Magnetic nanocomposite of filamentous algae activated carbon for efficient elimination of cephalexin from aqueous media

Afshin, Shirin; Rashtbari, Yousef; Ramavandi, Bahman; Fazlzadeh, Mehdi; Vosoughi, Mehdi; Mokhtari, S. Ahmad; Shirmardi, Mohammad; Rehman, Rabia

doi:10.1007/s11814-019-0424-6

Cited by 46 publications

(13 citation statements)

References 57 publications

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“…This indicates that the adsorption process can be attributed to chemical adsorption [10] through electron sharing or transfer between F Zn and CPX. These results are consistent with other studies on the adsorption of pharmaceuticals on carbonaceous materials [6,12,13,33,34]. Figure S3 (Supporting Information) shows the effect of the initial concentration of CPX on the removal efficiency.…”

Section: Adsorption Kineticssupporting

confidence: 90%

Evaluating the Removal of the Antibiotic Cephalexin from Aqueous Solutions Using an Adsorbent Obtained from Palm Oil Fiber

et al. 2021

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This study aimed to understand the adsorption process of cephalexin (CPX) from aqueous solution by a biochar produced from the fiber residue of palm oil. Scanning electron microscopy, Fourier transform infrared spectroscopy, Boehm titration, and the point of zero charge were used to characterize the morphology and surface functional groups of the adsorbent. Batch tests were carried out to evaluate the effects of the solution pH, temperature, and antibiotic structure. The adsorption behavior followed the Langmuir model and pseudo-second-order model with a maximum CPX adsorption capacity of 57.47 mg g−1. Tests on the thermodynamic behavior suggested that chemisorption occurs with an activation energy of 91.6 kJ mol−1 through a spontaneous endothermic process. Electrostatic interactions and hydrogen bonding represent the most likely adsorption mechanisms, although π–π interactions also appear to contribute. Finally, the CPX removal efficiency of the adsorbent was evaluated for synthetic matrices of municipal wastewater and urine. Promising results were obtained, indicating that this adsorbent can potentially be applied to purifying wastewater that contains trace antibiotics.

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Section: Adsorption Kineticssupporting

confidence: 90%

Evaluating the Removal of the Antibiotic Cephalexin from Aqueous Solutions Using an Adsorbent Obtained from Palm Oil Fiber

et al. 2021

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“…The kinetics of MB adsorption on the PVA/CMC/halloysite nanoclay membrane were analyzed by applying pseudo-first (PFO), pseudo-second (PSO) and intraparticle diffusion models to the theoretical data [5,96].…”

Section: Adsorption Kineticsmentioning

confidence: 99%

Adsorption of methylene blue dye from aqueous solution by a novel PVA/CMC/halloysite nanoclay bio composite: Characterization, kinetics, isotherm and antibacterial properties

Radoor

Karayil²,

Parameswaranpillai

et al. 2020

J Environ Health Sci Engineer

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Here the fabrication of a novel PVA/CMC/halloysite nanoclay membrane for the effective adsorption of cationic dye (methylene blue, MB) from aqueous environment is reported. The membranes were analyzed through scanning electron microscopy (SEM), optical microscopy (OM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), thermogravimetric analysis (TGA), contact angle and universal testing machine (UTM) analysis. The adsorption behavior of the membrane in terms of nanoclay loading, contact time, initial concentration of MB, pH and temperature were also discussed. The membrane exhibits excellent removal efficiency (99.5%) for MB in the optimal conditions such as nanoclay dose = 6 wt%, initial dye concentration = 10 ppm, contact time = 240 min, pH = 10 and temperature = 30 °C. Three isotherm models (Freundlich, Langmuir and Temkin) were employed to analyze the dye adsorption data. The results revealed that the adsorption process could be described well with both Freundlich and Langmuir isotherm model. The kinetics of MB adsorption onto membrane follows pseudo-second-order model while thermodynamic parameter indicate that adsorption is feasible and endothermic in nature. The antibacterial studies revealed that the PVA/CMC/halloysite nanoclay membrane possess notable antibacterial property. Finally, the desorption studies showed that the membrane have good reusability even after four recycles.

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“…54 On the other hand, q e increases from about 6 and 7.5 mg g −1 at 10 ppm to about 28 and 31 mg g −1 at 90 ppm for FLX and MB, respectively, due to the increase in the concentration gradient driving force of the adsorbate molecules at higher initial concentrations. 55,56…”

Section: Resultsmentioning

confidence: 99%

Exploitation of expired cellulose biopolymers as hydrochars for capturing emerging contaminants from water

2023

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Magnetic nanocomposite of filamentous algae activated carbon for efficient elimination of cephalexin from aqueous media

Cited by 46 publications

References 57 publications

Evaluating the Removal of the Antibiotic Cephalexin from Aqueous Solutions Using an Adsorbent Obtained from Palm Oil Fiber

Evaluating the Removal of the Antibiotic Cephalexin from Aqueous Solutions Using an Adsorbent Obtained from Palm Oil Fiber

Adsorption of methylene blue dye from aqueous solution by a novel PVA/CMC/halloysite nanoclay bio composite: Characterization, kinetics, isotherm and antibacterial properties

Exploitation of expired cellulose biopolymers as hydrochars for capturing emerging contaminants from water

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