Enhanced adsorptive removal of indigo carmine dye by bismuth oxide doped MgO based adsorbents from aqueous solution: equilibrium, kinetic and computational studies

Adam, Fatima A.; Ghoniem, Monira G.; Diawara, Moussa; Rahali, Seyfeddine; Abdulkhair, Babiker Y.; Elamin, Mohamed R.; Aissa, Mohamed Ali Ben; Seydou, Mahamadou

doi:10.1039/d2ra02636h

Cited by 34 publications

(20 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was noted in this study that there was a decrease in the number of dye molecules confiscated as the initial dye concentration was increased from 100 to 400 mg L −1 over the duration of interaction between the adsorbate and the adsorbent. At low initial concentrations, the proportion of the accessible active surface sites on the sorbent to the initial dye concentration was very high, which led to the improved sorption of AY17 dye due to the enhanced dye molecule's diffusion to the active sites on the absorbent surface and improved driving force of the concentration gradient 14,48 …”

Section: Resultsmentioning

confidence: 99%

“…In this study, the Langmuir (LNR) and Freundlich (FRH) isotherm models were utilized to analyze the absorption process of AY17 dye to MBCT. The LNR model defines the simple‐layer exposure of the absorbate on the regular surface of the absorbent with no interaction taking place between sorbed molecules, but the FRH model depends on sorption taking place over a varied surface with varying sorption energy 48 . Figure 11 and Table 3 show the linear plots and the assessed parameters of both models.…”

Section: Resultsmentioning

confidence: 99%

“…At low initial concentrations, the proportion of the accessible active surface sites on the sorbent to the initial dye concentration was very high, which led to the improved sorption of AY17 dye due to the enhanced dye molecule's diffusion to the active sites on the absorbent surface and improved driving force of the concentration gradient. 14,48 Kinetic models Sorption kinetic characterization gives critical knowledge about the mechanism of sorption, which is essential for assessing the sorption effectiveness. 43,49 In this study, the experimental data were fitted employing the pseudo-first-order (PFOM), pseudosecond-order (PSOM) intraparticle diffusion (INDM) and film diffusion (FDM) models.…”

Section: Effect Of Initial Concentrationmentioning

confidence: 99%

“…The LNR model defines the simple-layer exposure of the absorbate on the regular surface of the absorbent with no interaction taking place between sorbed molecules, but the FRH model depends on sorption taking place over a varied surface with varying sorption energy. 48 Figure 11 and Table 3 show the linear plots and the assessed parameters of both models. As observed from Table 3, the measured R 2 values of the FRH models best-defined the absorption process of AY17 dye to MBCT compared to the R 2 values of the LNR model obtained.…”

Section: Effect Of Initial Concentrationmentioning

confidence: 99%

See 3 more Smart Citations

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

View full text Add to dashboard Cite

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).

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Effect Of Initial Concentrationmentioning

confidence: 99%

Section: Effect Of Initial Concentrationmentioning

confidence: 99%

See 2 more Smart Citations

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

View full text Add to dashboard Cite

show abstract

“…In addition, the estimated ΔG 0 value was found to be between −11.10 and −12.18 kJ/mol, so it was possibly inferred that sorption was a physical spontaneous process. 67 The ΔG 0 value that remained between 0.0 and −20.0 kJ/mol indicated physisorption. 68 Moreover, the decreases in ΔG 0 value with increasing temperature might indicate reduction in spontaneity at a higher temperature.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Ophiorrhiza mungos-Mediated Silver Nanoparticles as Effective and Reusable Adsorbents for the Removal of Methylene Blue from Water

Akhi,

Hasan,

Saha

et al. 2024

ACS Omega

View full text Add to dashboard Cite

Green synthesis of silver nanoparticles (AgNPs) using a plant extract has attracted significant attention in recent years. It is found as an alternative for other physicochemical approaches because of its simplicity, low cost, and eco-friendly rapid steps. In the present study, Ophiorrhiza mungos (Om)mediated AgNPs have been shown to be effective bioadsorbents for methylene blue (MB) dye removal (88.1 ± 1.74%) just after 1 h at room temperature in the dark from an aqueous medium for the first time. Langmuir and Freundlich isotherms fit the experimental results having the correlation coefficient constants R 2 = 0.9956 and R 2 = 0.9838, respectively. From the Langmuir fittings, the maximum adsorption capacity and adsorption intensity were found to be 80.451 mg/g and 0.041, respectively, indicating the excellent performance and spontaneity of the process. Taking both models under consideration, interestingly, our findings indicated a fairly cooperative multilayer adsorption that might have been governed by chemisorption and physisorption, whereas the adsorption kinetics followed the pseudo-second-order kinetics mechanism. The positive and low values of enthalpy (ΔH 0 = 4.91 kJ/mol) confirmed that adsorption is endothermic and physical in nature; however, the negative free energy and positive entropy value (ΔS 0 = 53.69 J/mol K) suggested that the adsorption is spontaneous. The biosynthesized adsorbent was successfully reused up to the fifth cycle. A proposed reaction mechanism for the adsorption process of MB dye onto Om-AgNPs is suggested. The present study may offer a novel finding such as an effective and sustainable approach for the removal of MB dye from water using biosynthesized Om-AgNPs as reusable adsorbents at a comparatively faster rate at a low dose for industrial applications.

show abstract

An environmentally friendly hydrophobic deep eutectic solvent dispersive liquid liquid microextraction for spectrophotometric analysis of indigo carmine (E132)

Kizil,

Erkmen Erbilgin,

Yola

et al. 2023

Opt Quant Electron

View full text Add to dashboard Cite

Enhanced adsorptive removal of indigo carmine dye by bismuth oxide doped MgO based adsorbents from aqueous solution: equilibrium, kinetic and computational studies

Abstract: The IC adsorption mechanism on the Bi2O3 doped MgO nanosorbents occurred through the chemisorption process.

Cited by 34 publications

References 69 publications

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

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

Ophiorrhiza mungos-Mediated Silver Nanoparticles as Effective and Reusable Adsorbents for the Removal of Methylene Blue from Water

An environmentally friendly hydrophobic deep eutectic solvent dispersive liquid liquid microextraction for spectrophotometric analysis of indigo carmine (E132)

Contact Info

Product

Resources

About