Étude comparative de l’adsorption du colorant Victoria Bleu Basique à partir de solutions aqueuses sur du carton usagé et de la sciure de bois

Benhafsa, Fouad Mekhalef; Kacha, S.; Leboukh, Abdelkader; Belaid, Kumar Djamel

doi:10.7202/1051695ar

Cited by 7 publications

(7 citation statements)

References 27 publications

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“…Figure 5 shows that the broadband at 3412.92 cm −1 is related to the elongation vibration of the O-H bond [ 17 ], mainly due to the presence of cellulose molecules [ 18 ]. The peak observed at 2922.93 is attributed to the C-H elongation and bending vibration of the CH 3 methyl group [ 19 ].…”

Section: Resultsmentioning

confidence: 99%

“…The results obtained show that the equilibrium time is independent of the initial dye concentration and that the amount of dye fixed on the adsorbent increases with the contact time. Figure 8 reveals the existence of two phases during the adsorption of the MB by the SCB: the first one is the fastest taking 5 minutes, which can be explained by the existence of a high affinity between the cations of the dye and the adsorbent [ 17 ], and the second is a slow phase where equilibrium is gradually reached after 20 minutes. This may be due to the saturation of the active sites in the support [ 27 ].…”

Section: Resultsmentioning

confidence: 99%

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The Use of Sugarcane Bagasse to Remove the Organic Dyes from Wastewater

Kerrou

Bouslamti

Raada

et al. 2021

International Journal of Analytical Chemistry

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In the present study, the potential of sugarcane bagasse (SCB) was evaluated by methylene blue (MB) retention. The selected low-cost adsorbent was characterized by scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectroscopy (EDX), Fourier transform infrared spectroscopy (FTIR), BET method, and determination of the point of zero charge (pHzpc). Batch kinetic and isothermal studies were performed to examine the effects of contact time, initial dye concentration, adsorbent dose, pH, and temperature. The results show that the kinetic study of MB adsorption on sugarcane bagasse is very fast; the equilibrium is reached after only 20 minutes. The kinetic model of pseudo-second-order and the Langmuir isotherm model perfectly explain the adsorption process of MB with a monolayer adsorption capacity equal to 49.261 mg·g−1 activation parameters’ values such as free energy (ΔG°), enthalpy (ΔH°), and entropy (ΔS°) also determined as −4.35 kJ·mol−1, −31.062 kJ·mol−1, and −0.084 J·mol−1·K−1, respectively. Besides, the thermodynamic parameters of the methylene blue sugarcane bagasse system indicate that the exothermic adsorption process is spontaneous.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

The Use of Sugarcane Bagasse to Remove the Organic Dyes from Wastewater

Kerrou

Bouslamti

Raada

et al. 2021

International Journal of Analytical Chemistry

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“…The study of the adsorption kinetics of salicylic acid demonstrated the values and benefits of its depolluting properties but the choice of the most appropriate kinetic model for this material will facilitate the study and give more reliable results (Adib et al, 2018;Giraldo et al, 2018;Mekhalef et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Study and Modelization of Veterinary Drug Residue Kinetics on Sawdust as Absorptive Biomaterial in Eastern Algeria during January 2017 to June 2018

Berghiche¹,

Khenenou²,

Boulebda³

et al. 2019

jwpr

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Sawdust, an affordable resource, is being investigated as an adsorbent to eliminate residual contaminants from water. Wood processing residues such as bark and sawdust have been widely studied for some years for their adsorption and removal properties of toxic metals contained in contaminated effluents. The aim of our study is to know the source of chemical contamination of water by using spectrophotometry methods in field ultraviolet, the kinetic study of sodium salicylate adsorption on sawdust was modelized according to two kinetic models (pseudo first and second order), to determine the most optimal pattern to describe this phenomenon, was based in the comparison on the correlation coefficient (R 2 ) between the absorbance and the wavelength for both models and evaluate the optimal time of contact solid/liquid. Present results indicated that the correlation coefficient (R 2 =0.999) for the pseudo-second order, which means that this model is the best for future studies in the kinetics of adsorption of sodium salicylate by sawdust, with a time of contact solid /liquid optimal is 44.5 minutes.

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“…Thermodynamic parameters such as thermodynamic equilibrium constant K d , Gibbs free energy variation ΔG 0 , enthalpy variation ΔH 0 , and entropy variation ΔS 0 are among the most important parameters involved in the establishment of an adsorption system, thus to evaluate the feasibility and nature of the adsorption process [ 50 ]. The thermodynamic parameters were obtained from the following equations [ 51 ]:

where k is the equilibrium constant (L/mg), R is the gas constant (8.314 J/mol.K), and T is the absolute temperature (K).…”

Section: Methodsmentioning

confidence: 99%

Characterization of Ziziphus lotus’ Activated Carbon and Evaluation of Its Adsorption Potential

Touzani

Fikri-Benbrahim

Ahlafi

et al. 2022

Journal of Environmental and Public Health

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This study aims to prepare activated carbon from an interesting biomaterial, corresponding to the cores of Ziziphus lotus, for the first time to the best of our knowledge, according to a manufacturing process based on its chemical and thermal activation. These cores were chemically activated by sulfuric acid for 24 h and then carbonized at 500°C for 2 hours. The obtained activated carbon was characterized by scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and Brunauer–Emmett–Teller (BET) analysis. The adsorption of methylene blue (MB) on the activated carbon was evaluated, by Langmuir and Freundlich models examination, in order to explain the adsorption efficiency in a systematic and scientific way. Moreover, pseudo-first-order and pseudo-second-order kinetic models were used to identify the mechanisms of this adsorption process. The characterization results showed an important porosity (pore sizes ranging from 10 to 45 µm), a surface structure having acid groups and carboxylic functions, and a specific surface of 749.6 m2/g. Results of the MB adsorption showed that this process is very fast as more than 80% of MB is adsorbed during the first 20 minutes. In addition, increasing the contact time and temperature improves the MB removal process efficiency. Moreover, this adsorption’s kinetic modeling follows the pseudo-second-order model. Furthermore, data on the adsorption isotherm showed a maximum adsorption capacity of 14.493 mg/g and fit better with the Langmuir model. The thermodynamic parameters (∆G0, ∆S0, and ∆H0) indicate that the adsorption process is endothermic and spontaneous. Therefore, Ziziphus lotus can be used as a low-cost available material to prepare a high-quality activated carbon having a promising potential in the wastewater treatment.

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Étude comparative de l’adsorption du colorant Victoria Bleu Basique à partir de solutions aqueuses sur du carton usagé et de la sciure de bois

Cited by 7 publications

References 27 publications

The Use of Sugarcane Bagasse to Remove the Organic Dyes from Wastewater

The Use of Sugarcane Bagasse to Remove the Organic Dyes from Wastewater

Study and Modelization of Veterinary Drug Residue Kinetics on Sawdust as Absorptive Biomaterial in Eastern Algeria during January 2017 to June 2018

Characterization of Ziziphus lotus’ Activated Carbon and Evaluation of Its Adsorption Potential

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