Adsorption Isotherm and Kinetic Modeling of the Congo Red (CR) and Indigo Carmine (IC) Dyes Removal onto Novel Bentonite Hybrid Material

Guezzen, Brahim; Ech‐Chergui, Abdelkader Nebatti; Abdelkader, Elaziouti; Demey, Hary; Zoukel, Abdelhalim; Didi, Mohamed Amine; Boudia, Rafik Abdelkrim; Adjdir, Mehdi

doi:10.1002/slct.202300592

Cited by 3 publications

(1 citation statement)

References 74 publications

(83 reference statements)

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“…In previous studies, [66–74] the reuse of synthesized materials has been investigated and it has been shown that synthesized compounds also can be recycled.…”

Section: Resultsmentioning

confidence: 99%

Crystal violet removal from aqueous media using Tragopogon dubius adsorbent

Yaghoub Krimi,

Marofi,

Zare

2024

ChemistrySelect

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In this study, Tragopogon dubius was used using a specific condition of adsorption to remove a cationic harmful dye (crystal violet : CV) in aqueous liquid media. Removing time, rate of adsorbent, pH of the media, initial concentration of the harmful dye, and absorbent particle size were studied to reach an optimum adsorption condition. Before and after the biosorption process of CV, the SEM micrographs and EDX spectra were obtained for Tragopogon dubius. The maximum removal efficiency of CV (90–93 %) has happened at pH=7.0, contact time of 120 min, adsorbent dose of 0.2 g/L (with particle size of 0.074 mm), temperature of 25 ○C, and pollutant rate of 50.0 mg/L. The adsorption rate of Tragopogon dubius was calculated using equilibrium models. It was also increased by water washing (30 min). The results showed that 50 % of the dye was absorbed when the adsorption time reached 50 min. Maximum adsorption (212.9 mg/g) occurred after 120 min of removing time. The results revealed the best accordance of the Tragopogon dubius adsorption with the Freundlich model (R2=0.96). A kinetic agreement was also observed between the dye adsorption and the Pseudo‐second order model. The negative value of ΔS° (−53.51 J/K mol) indicates that Tragopogon dubius removes CV during a relatively stable process with randomness in the system. The negative values of ΔG° at different temperatures indicate that the nature of CV adsorption was spontaneous.

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“…In previous studies, [66–74] the reuse of synthesized materials has been investigated and it has been shown that synthesized compounds also can be recycled.…”

Section: Resultsmentioning

confidence: 99%

Crystal violet removal from aqueous media using Tragopogon dubius adsorbent

Yaghoub Krimi,

Marofi,

Zare

2024

ChemistrySelect

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Recent advances of application of bentonite-based composites in the environmental remediation

Zhang,

Zhu,

Hou

et al. 2024

Journal of Environmental Management

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Characterization and applicability of the Naima–Tiaret–Algeria illite-montmorillonite clay for methylene blue dye removal: adsorption kinetic, isotherm and thermodynamic studies

Mohamed,

Nadjia,

Abdelkader

et al. 2024

Water Practice &Amp; Technology

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An illite-montmorillonite clay from Naima, IMN (Algeria) was treated via physical and chemical treatment (TIMN) and investigated for the removal of methylene blue. IMN and TIMN clays were characterized by XRD, XRF, SEM-EDS, DSC-GA, FTIR and DC electrical conductivity methods. To analyze the sorption behavior of MB on the clays, a mechanistic model for interpreting the sorption data was developed. IMN clay revealed high sorption capacity (1.925 × 10−2 kg kg−1) for MB in 60 min. The pseudo-second-order model had a very good agreement to describe the MB adsorption process. The adsorption capacities, qe,exp, of 4.327 × 10−2 and 4.914 × 10−2 kg kg−1 for IMN and TIMN, respectively, were obtained. The free energy from the D–R model from adsorbing MB using IMN and TIMN ranged from 1.581 to 0.745 × 10−3J mol−1, respectively, suggesting that the process is physisorption. Besides, the sorption process was more sensible to temperatures that increase was beyond 40 °C causing a decrease in adsorption capacity, indicating that the adsorption reaction of MB onto IMN was exothermic. The adsorption mechanism of I/M clay to remove MB was likely based on hydrogen bonding, electrostatic attraction, cation exchange and n–π interaction. These results proved that TIMN was a promising adsorbent for removing MB from its simulated wastewater.

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Adsorption Isotherm and Kinetic Modeling of the Congo Red (CR) and Indigo Carmine (IC) Dyes Removal onto Novel Bentonite Hybrid Material

Cited by 3 publications

References 74 publications

Crystal violet removal from aqueous media using Tragopogon dubius adsorbent

Crystal violet removal from aqueous media using Tragopogon dubius adsorbent

Recent advances of application of bentonite-based composites in the environmental remediation

Characterization and applicability of the Naima–Tiaret–Algeria illite-montmorillonite clay for methylene blue dye removal: adsorption kinetic, isotherm and thermodynamic studies

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