Fluoride ions sorption using functionalized magnetic metal oxides nanocomposites: a review

Aigbe, Uyiosa Osagie; Osibote, Otolorin Adelaja

doi:10.1007/s11356-021-17571-7

Cited by 9 publications

(2 citation statements)

References 196 publications

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“…In defining the sorption process, contaminant concentration in an aqueous medium requirement and the number of contaminants sorbed to the sorbent under equilibrium are very important. Under a specific array of concentrations, the sorption of noxious contaminants continues to enhance with an increase in the initial contaminant concentration if the sorbent is not overloaded 47 . Figure 9 shows the sorption of AY17 dye to MBCT at varying initial concentrations of 100–400 mg L −1 by 0.75 and 1.00 g L −1 sorbent dosage at the time of interaction of 20–180 min.…”

Section: Resultsmentioning

confidence: 99%

Biochar‐C‐TETA as a superior adsorbent to acid yellow 17 dye from water: isothermal and kinetic studies

Eleryan

Hassaan

Aigbe

et al. 2023

J of Chemical Tech & Biotech

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Adsorbents from local materials with high adsorption capacity (Qm) are strongly needed. In this study, mandarin peels (MP) as a local waste material were refluxed in 80% sulfuric acid (H2SO4) to produce a novel biochar, which was oxidized by boiling in 50% hydrogen perioxide (H2O2) and then aminated via refluxing in tetraacetic acid (TETA) to produce mandarin biochar‐C‐TETA (MBCT). Fourier transform infrared (FTIR), Brunauer–Emmett–Teller (BET), Barrett–Joyner–Halenda (BJH), scanning electron microscopy (SEM), energy‐dispersive X‐ray (EDX), X‐ray diffraction (XRD), X‐ray photoelectron spectroscopy (XPS) and thermgravimetric analysis (TGA) studied various characterizations of MBCT. The optimal pH for AY17 dye absorption was discovered to be 1.5 using 0.75 g L−1 MBCT, the maximum absorption capacity predicted for the MBCT was 1250 mg g−1. The high new absorption peaks at 1439.89 and 1362.38 cm−1 in MBCT imply that amino groups were successfully generated onto the surface of MBCT due to TETA treatment. The experimental data were examined using the Langmuir (LNR) and Freundlich (FRH) isotherm models. The FRH best explained the experimental MBCT data. The pseudo‐first‐order (PFOM) and pseudo‐second‐order (PSOM) models, intraparticle diffusion (INDM) and film diffusion (FDM) models were applied to calculate the kinetic data. The PFOM rate model ideally defined the absorption of AY17 dye to MBCT with a linear regression coefficient (R2 > 0.99). The key mechanism for absorbing AY17 dye molecules to MBCT was chemisorption, which entails the distribution or exchange of electrons between the absorbent and the dye due to the valency force. According to the findings, the novel MBCT adsorbent had a remarkable adsorption capacity (Qm = 1250 mg g−1) and could be reused without losing its absorption effectiveness. © 2023 Society of Chemical Industry (SCI).

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Section: Resultsmentioning

confidence: 99%

Biochar‐C‐TETA as a superior adsorbent to acid yellow 17 dye from water: isothermal and kinetic studies

Eleryan

Hassaan

Aigbe

et al. 2023

J of Chemical Tech & Biotech

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“…Cerium oxide, due to its relative abundance, is less expensive than platinum. This cost-effectiveness could make MFCs more economically viable for widespread use ( Aigbe and Osibote, 2022 ). Cerium oxide exhibits interesting catalytic properties and displays strong thermal stability and resistance to catalyst poisoning, and hence outperforming platinum in this regard too ( Liu et al, 2011 , Gholami and Luo, 2018 ).…”

Section: Discussionmentioning

confidence: 99%