Experimental and theoretical evaluation of synthetized cobalt oxide for phenol adsorption: Adsorption isotherms, kinetics, and thermodynamic studies

Lammini, Adil; Dehbi, Ali; Omari, Hind; Elazhari, Kaoutar; Mehanned, Smahane; Bengamra, Youssera; Dehmani, Younes; Oukhrib, Rachid; Alrashdi, Awad A.; Gotore, Obey; Abdellaoui, Abdelaziz; Lgaz, Hassane

doi:10.1016/j.arabjc.2022.104364

Cited by 12 publications

(4 citation statements)

References 44 publications

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“…In this regard, various adsorbents such as activated carbon 16 , 17 , minerals 18 , 19 , and polymers 20 , 21 have been applied to investigate phenol uptake. For example, Lammini et al 22 synthesized cobalt oxide Co 3 O 4 and applied it for adsorption of phenol from solution. According to their results, the highest capacity and removal percentage of phenol at pH 4 were obtained 8.10 mg/g and 98%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Toward a mechanistic understanding of adsorption behavior of phenol onto a novel activated carbon composite

Allahkarami

Monfared

Silva

et al. 2023

Sci Rep

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In this research, the solid–liquid adsorption systems for MSAC (PbFe2O4 spinel-activated carbon)-phenol and pristine activated carbon-phenol were scrutinized from the thermodynamics and statistical physics (sta-phy) viewpoints. Experimental results indicated that MSAC composite outperformed pristine AC for the uptake of phenol from waste streams. By increasing the process temperature, the amount of phenol adsorbed onto both adsorbents, MSAC composite and pristine AC, decreased. Thermodynamic evaluations for MSAC demonstrated the spontaneous and exothermic characteristics of the adsorption process, while positive values of ΔG for pristine AC indicated a non-spontaneous process of phenol adsorption in all temperatures. In a mechanistic investigation, statistical physics modeling was applied to explore the responsible mechanism for phenol adsorption onto the MSAC composite and pristine AC. The single-layer model with one energy was the best model to describe the experimental data for both adsorbents. The adsorption energies of phenol onto both adsorbents were relatively smaller than 20 kJ/mol, indicating physical interactions. By increasing temperature from 298 to 358 K, the value of the absorbed amount of phenol onto the MSAC composite and pristine AC at saturation (Qsat) decreased from 158.94 and 138.91 to 115.23 and 112.34 mg/g, respectively. Mechanistic studies confirm the significant role of metallic hydroxides in MSAC to facilitate the removal of phenol through a strong interaction with phenol molecules, as compared with pristine activated carbon.

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Section: Introductionmentioning

confidence: 99%

Toward a mechanistic understanding of adsorption behavior of phenol onto a novel activated carbon composite

Allahkarami

Monfared

Silva

et al. 2023

Sci Rep

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“…In recent years, a variety of different methods have been investigated for phenol removal. The effective method in phenol removal is the adsorption method due to its cost-effectiveness, environmental friendliness, flexibility, simplicity, and high performance (Lammini et al, 2022;Haydari et al, 2023;Hasanah et al, 2022b).…”

Section: Introductionmentioning

confidence: 99%

Enhanced Effectiveness on Phenol Removal by MgCr-LDH/Microcrystalline Cellulose Composite and Regeneration Study with Green Desorption Reagent

Yuliasari

Wijaya

Mohadi

et al. 2023

Sci. Technol. Indones

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Modified MgCr-LDH with microcrystalline cellulose (MgCr/MCC) was successfully prepared by the coprecipitation method and characterized using XRD, FT-IR, and BET analyses. MgCr/MCC showed an increase in surface area from 21.51 to 26.056 m2/g. The material was tested as an adsorbent for the removal of phenol. MgCr/MCC showed an increase in adsorption capacity from the initial material of 24.631 to 58.480 mg/g. The optimum pH was at pH 9 and the adsorption process’s equilibrium time is 70 minutes. The correlation coefficients on the kinetics and isotherm parameters show that phenol removal follows the pseudo second order (PSO) and Langmuir models with spontaneous and endothermic adsorption processes. The regeneration ability of MgCr/MCC material using the water-assisted ultrasonic system as a green desorption reagent was 3 cycles with a percent regeneration efficiency of 39.45%.

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“…They are common organic pollutants in industrial and agricultural wastewater. 1 The European Union (EU) and the US Environmental Protection Agency (USEPA) designated phenolic pollutants as major pollutants owing to their high toxicity, persistence, and difficulty in decomposition. 2,3 Therefore, the removal of phenols from wastewater is particularly important to mitigate pollution in the environment.…”

Section: Introductionmentioning

confidence: 99%

Coupling behavior and enhancement mechanism of porous structure, graphite microcrystals, and oxygen-containing groups of activated biochar for the adsorption of phenol

Garg

Zhong

et al. 2023

Environ. Sci.: Water Res. Technol.

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Experimental and theoretical evaluation of synthetized cobalt oxide for phenol adsorption: Adsorption isotherms, kinetics, and thermodynamic studies

Cited by 12 publications

References 44 publications

Toward a mechanistic understanding of adsorption behavior of phenol onto a novel activated carbon composite

Toward a mechanistic understanding of adsorption behavior of phenol onto a novel activated carbon composite

Enhanced Effectiveness on Phenol Removal by MgCr-LDH/Microcrystalline Cellulose Composite and Regeneration Study with Green Desorption Reagent

Coupling behavior and enhancement mechanism of porous structure, graphite microcrystals, and oxygen-containing groups of activated biochar for the adsorption of phenol

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