Highly-efficient treated oil shale ash adsorbent for toxic dyes removal: Kinetics, isotherms, regeneration, cost analysis and optimization by experimental design

Miyah, Youssef; Benjellοun, Mohammed; Lahrichi, Anissa; Mejbar, Fatiha; Iaich, Soulaiman; Mouhri, Ghita El; Kachkoul, Rabie; Zerrouq, Farid

doi:10.1016/j.jece.2021.106694

Cited by 46 publications

(5 citation statements)

References 94 publications

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“…The results obtained show that the amounts of MB dye adsorbed by natural clay (TMG) increase slightly with increasing temperature in the studied range. This effect can be attributed to a decrease in solution viscosity with increasing temperature, which leads to an increase in the rate of diffusion of MB dye molecules through the outer boundary layer and into the pores of the adsorbent and an increase in the mobility of the adsorbent molecules, which facilitates the formation of monolayers on the surface (Miyah et al 2021).…”

Section: The Effect Of Solution Temperaturementioning

confidence: 99%

“…The experimental data were analyzed using the Langmuir, Freundlich, and Temkin isotherm models in their linearized forms (Eq.8, Eq.9, and Eq.10), the purpose of which was to determine the type of adsorption mechanism, the adsorption capacity, and the affinity of the dye to the adsorbent surface (Miyah et al 2021;Benjelloun et al 2022) Eq. 9…”

Section: The Isotherms Models Of Adsorptionmentioning

confidence: 99%

“…The response surfaces show the area where the removal rate is greatest, allowing us to select a fit that takes the experimental constraints on each of the parameters studied into account (Miyah et al 2021). Fig.…”

Section: Effects Of Variables On Methylene Blue Dye Removal Ratementioning

confidence: 99%

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Methylene blue dye’s adsorption on a natural clay surface from Southeast Morocco: modeling and experimental equilibrium studies

El-Habacha

Dabagh

Lagdali

et al. 2023

Preprint

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The present research work revolves around the evaluation of the elimination of the cationic dye Methylene Blue (MB) from an aqueous solution by the exploitation of natural clay (TMG) from South-East Morocco. Several physicochemical techniques were used to characterize our TMG adsorbate, namely: X-ray diffraction (XRD), Fourier transform infrared absorption spectroscopy (FTIR), differential thermal analysis (DTA), thermal gravimetric analysis (TGA), and zero charge point (pHpzc). The morphological properties and elemental composition of our material were identified using scanning electron microscopy coupled with an energy-dispersive X-ray spectrometer (SEM-EDS). The batch technique was used under different operating conditions to produce quantitative adsorption, namely the amount of adsorbent, dye concentration, contact time, pH, and solution temperature. The maximum adsorption capacity of MB on TMG was 81.185 mg g-1 for a concentration of 100 mg L-1 MB at pHinitial= 6.43, temperature 20 °C, and 1 g L-1 adsorbent. The adsorption data were examined by Langmuir, Freundlich, and Temkin isotherms. The Langmuir isotherm provides the best correlation with the experimental data, and the pseudo-second-order kinetic model is more appropriate for the adsorption of the MB dye. The thermodynamic study of MB adsorption indicates that the process is physical, endothermic, and spontaneous. The Box-Behnken method was applied to identify the optimal conditions for MB removal in the design of batch experiments. The parameters examined result in >99% removal.

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Section: The Effect Of Solution Temperaturementioning

confidence: 99%

Section: The Isotherms Models Of Adsorptionmentioning

confidence: 99%

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Methylene blue dye’s adsorption on a natural clay surface from Southeast Morocco: modeling and experimental equilibrium studies

El-Habacha

Dabagh

Lagdali

et al. 2023

Preprint

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“…The influence of solution pH on metal adsorption is well known since it affects the nature and chemistry of heavy metals during the adsorption process [31][32][33][34][35].…”

Section: Metal Solution Phmentioning

confidence: 99%

Treated oil shale ash and its capacity to remove Cd and Pb from aqueous solutions

Al-Ayed¹,

El-Hasan²,

Amro³

et al. 2022

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Cadmium (Cd) is the most highly toxic heavy metal even at a trace level. In this study, the oil shale ash treated material was used as an adsorbent to remove cadmium and lead (Pb) metals/ions from aqueous solutions. The absorbent treated oil shale material was characterized prior to experimental work using X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The effects of multiple factors on percent metal removal, including contact time, initial ions concentration and pH, are investigated. Results show that the adsorption capacities of Pb and Cd are 29.15 and 23.81 mgg -1 , whereas removal efficiencies are 56% and 48% in 10 minutes, respectively. Removal efficiency and time of equilibrium are affected by the metal atomic weight (Pb 207.2 u and Cd 112.4 u) and pH values. The equilibrium isotherms were analyzed using Freundlich and Langmuir isotherm models and described by the Freundlich isotherm model indicating a heterogeneous surface of the adsorbent. The calculated Langmuir adsorption constant and maximum adsorption capacity of adsorbent, K L and q max , are 1.313*10 -2 and 25.25, respectively. The Freundlich adsorption constant K F and the characteristic constant of the Freundlich isotherm n are 0.5234 and 1.39, respectively.

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“…As a result, several wastewater treatment methods have been developed to remove these harmful substances. These methods include adsorption [21], coagulation-occulation [22], biodegradation [23], ultra ltration [24], and more. Out of all these techniques, adsorption stands out due to its simplicity, e ciency, and high performance [25].…”

Section: Introductionmentioning

confidence: 99%

A new valorization of faba bean waste: Fabrication of a low-cost adsorbent for efficient removal dyes from textile wastewater

Falil

Abourriche²,

Abouliatim

et al. 2023

Preprint

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As part of the effort to extract more value from agri-food waste, innovative adsorbents have been prepared from faba bean waste (FB: Vicia Faba L) using a physical activation process at a moderate temperature of 350°C. This process, developed by the authors of the study, yields effective adsorbent materials known as HTFB. Due to the favorable physico-chemical properties of these materials, they are suitable for treating water that is contaminated with two different groups of dyes: anionic (orange G (OG)) and cationic dyes (crystal violet (CV) and methylene blue (MB)). The adsorption was carried out in batch mode to examine the influence of different operating conditions (pH, initial dye concentration, temperature, contact time, etc.) on the percentage of the removal dye. According to the experiment results, the materials developed have demonstrated a remarkable efficiency for the elimination of cationic dyes (66.86% for the crystal violet and 58.20% of the methylene blue) and a limited efficiency for anionic dyes (7.05% of the orange G) at natural pH. Kinetic studies showed that the pseudo-second-order model better described the adsorption of dyes onto the HTFB. Besides, Langmuir isotherm model fit better the equilibrium data of dyes adsorption. The maximum adsorption capacities determined from the Langmuir equation were 43.48, 32.68, and 3.51 mg/g, for CV, MB and OG, respectively.

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Highly-efficient treated oil shale ash adsorbent for toxic dyes removal: Kinetics, isotherms, regeneration, cost analysis and optimization by experimental design

Cited by 46 publications

References 94 publications

Methylene blue dye’s adsorption on a natural clay surface from Southeast Morocco: modeling and experimental equilibrium studies

Methylene blue dye’s adsorption on a natural clay surface from Southeast Morocco: modeling and experimental equilibrium studies

Treated oil shale ash and its capacity to remove Cd and Pb from aqueous solutions

A new valorization of faba bean waste: Fabrication of a low-cost adsorbent for efficient removal dyes from textile wastewater

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