High adsorption capacity of thermally treated solid olive wastes to treat olive mill wastewater

Bekri, Imene; Taleb, Zoubida; Taleb, Safia; Tlemsani, Salima; Hodaifa, Gassan; Abdelkader, Belfedal

doi:10.1002/tqem.21823

Cited by 2 publications

(1 citation statement)

References 31 publications

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“…Among them: ozonation [3], oxidation [4,5], coagulation [6], electrodegradation [7], etc. In addition, adsorption is among the oldest methods as an efficient, inexpensive and easy-to-implement technique [8], using different types of adsorbents: activated carbon [9], hydroxyapatite [10] or bentonite [3,11,12]. These last are interlayer aluminosilicates minerals with different structures, such smectite.…”

Section: Introductionmentioning

confidence: 99%

Temperature and pH influence on Diuron adsorption by Algerian Mont-Na Clay

Tlemsani

Taleb

Piraúlt-Roy

et al. 2022

International Journal of Environmental Analytical Chemistry

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The United States Environmental Protection Agency (EPA) classified the phenylurea herbicide Diuron (C9H10Cl2N2O) as possibly carcinogenic to humans. This research is focused on the adsorbent performances of an Algerian sodium Montmorillonite (Mont-Na), for the removal of Diuron in aqueous solutions. The material is characterized before and after processing using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), specific surface area (SBET) and thermal analysis (TGA/DTA). The tests were firstly performed at 25°C and pH = 6.3. Until 61 hours of experiment, no removal was obtained in this case. After that, the experiments were carried out on Mont-Na at high temperature and medium pH (T = 45°C, pH = 6.3) and then at ambient temperature and basic pH (T = 25°C, pH = 11). The removal was increased from 74% to 91%, respectively. The equilibrium is reached after 5 hours and the adsorption capacity is between 0.74 mg/g at 45°C and 0.91 mg/g at pH = 11. The kinetic modelling shows that the pseudo-first order describes the experimental data of the Diuron adsorption on Mont-Na and the equili brium data are modelled perfectly by applying the Elovich model. The thermodynamic quantities indicate that the adsorption process on Mont-Na at pH = 6.3 is spontaneous (ΔG < 0) and endothermic (ΔH = 31.80 kJ.mol −1 ). In conclusion, under the operating conditions used, local Mont-Na proved to be an excellent material for the adsorption of Diuron in aqueous solutions. That could be very promising for sewage treatment.

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Section: Introductionmentioning

confidence: 99%

Temperature and pH influence on Diuron adsorption by Algerian Mont-Na Clay

Tlemsani

Taleb

Piraúlt-Roy

et al. 2022

International Journal of Environmental Analytical Chemistry

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Kinetic and isotherm evaluation of o-cresol adsorption on activated carbon procured from olive pomace

Choukchou Braham,

Taleb,

Djeziri

et al. 2023

ACTA PERIOD TECHN

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This article aims to apply an activated carbon on the adsorption of o-cresol in an aqueous medium. Our work presents a double environmental aspect: On one hand, a valorization of under-natural products, which is the olive pomace and on the other hand, the study of the adsorbent efficiency of the activated carbon resulting from these cores. Activated carbon is prepared with chemical activation of olive pomace using H3PO4. The characterization of this porous material has shown a specific surface area equal to 651 m2/g with the presence of mesopores. Various parameters influencing the adsorption were optimized, mainly the effect of the contact time, initial concentration of o-cresol and pH of the solution were studied. The experimental results show that the sorption equilibrium is reached within 60 min with an adsorption yields of 83.66%. Indeed, the experimental adsorbed quantity of adsorbent is 3.82 mg/g with o-cresol concentration of 50 mg/L, T = 30?C and pH 2.6 for the better adsorption. The adsorption process was also studied by examining Langmuir, Freundlich, Temkin isotherm, and Dubinin-Radushkevich (D-R) isotherm models. The results revealed that the adsorption system followed the pseudo-second order model and the Freundlich model. Several thermodynamic factors, namely, the standard free energy (?Gads), enthalpy (?Hads), and entropy (?Sads) changes, were also calculated. The results demonstrated that the adsorption process is a physical and endothermic. The obtained results are interesting, and applications on other pollutants, in wastewater are in progress.

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High adsorption capacity of thermally treated solid olive wastes to treat olive mill wastewater

Cited by 2 publications

References 31 publications

Temperature and pH influence on Diuron adsorption by Algerian Mont-Na Clay

Temperature and pH influence on Diuron adsorption by Algerian Mont-Na Clay

Kinetic and isotherm evaluation of o-cresol adsorption on activated carbon procured from olive pomace

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