Valorization of olive stones into a granular activated carbon for the removal of Methylene blue in batch and fixed bed modes

Benzekri, M. Benallou; Benderdouche, N.; Bestani, Benaouda; Douara, N.; Duclaux, Laurent

doi:10.26872/jmes.2018.9.1.31

Cited by 11 publications

(6 citation statements)

References 24 publications

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“…In addition, the very intense C-O st absorption band at 1026 of alcoholic hydroxyl [44,45] had decreased and the three intense bands (1701, 1586 and 11,904 cm −1 ) corresponding to carbonyl groups of different functional groups (ketone, lactone and carboxylic acid [44][45][46] had appeared. This agrees with the described presence of carboxylic, phenolic, lactone and carbonyl groups in H 3 PO 4 /thermal activated olive stones [47,48]. The point of zero charge determines the surface charge of the adsorbent at a given pH and supplies information about the possible electrostatic interactions with the adsorbate [49].…”

Section: Adsorbent Characterizationsupporting

confidence: 86%

Activated Olive Stones as a Low-Cost and Environmentally Friendly Adsorbent for Removing Cephalosporin C from Aqueous Solutions

León

Saura

Hidalgo

et al. 2021

IJERPH

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In this paper, we describe the removal of cephalosporin C (CPC) from aqueous solutions by adsorption onto activated olive stones (AOS) in a stirred tank. For comparative purposes, several experiments of adsorption onto commercial granular activated carbon were carried out. A quantum study of the different species of cephalosporin C that, depending on the pH, exist in aqueous solution pointed to a favorable mass transfer process during adsorption. Activated olive stones were characterized by SEM, EDX and IR techniques and their pHzc was determined. A 10−3 M HCl cephalosporin C solution has been selected for the adsorption experiments because at the pH of that solution both electrostatic and hydrogen bond interactions are expected to be established between the adsorbate and the adsorbent. The adsorption process is best described by the Freundlich isotherm model and the pseudo-second-order kinetic model, while the adsorption mechanism is mainly controlled by film diffusion. Under the conditions studied, the adsorption process is of a physical nature, endothermic and spontaneous. Comparison of the adsorption results obtained in this paper with those of other authors shows that the efficiency of AOS is 20% of that of activated carbon but 65% higher than that of the XAD-2 adsorbent. Considering its low price, abundance, easy accessibility and eco-compatibility, the use of activated olive stones as adsorbents for the removal of emerging pollutants from aqueous solutions represents an interesting possibility from both the economic and the environmental points of view.

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Section: Adsorbent Characterizationsupporting

confidence: 86%

Activated Olive Stones as a Low-Cost and Environmentally Friendly Adsorbent for Removing Cephalosporin C from Aqueous Solutions

León

Saura

Hidalgo

et al. 2021

IJERPH

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“…However, the uptake results of MB onto (OS400) revealed that there was no benefit at pH values higher than pH7 and that maximum uptake was observed at pH 7 with the removal of 66%, a similar study has been previously observed 81,82 .…”

Section: Effect Of Phsupporting

confidence: 80%

Synthesis of activated carbon composited with Egyptian black sand for enhanced adsorption performance toward methylene blue dye

ElKholy

Yahia²,

El-Nawawy

et al. 2023

Sci Rep

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The present study reports the feasibility of the synthesis of a novel porous composite adsorbent, prepared from olive stone activated carbon (OS400) and garnet (GA) mineral impregnations (referred to as OSMG). This composite (OSMG) was applied for its ability to adsorb a macromolecular organic dye. The composite’s structural characteristics were evaluated using various techniques such as Brunauer–Emmett–Teller (BET), Scanning Electron Microscopy equipped with Energy Dispersive X-ray spectroscopy (SEM–EDX), X-ray diffraction (XRD), and a Fourier transform infrared spectrometer (FT-IR). The specific surface area of the garnet (GA), (OS400), and (OSMG) were found to be 5.157 mg⋅g−1, 1489.598 mg⋅g−1, and 546.392 mg⋅g−1, respectively. The specific surface area of the new composite (OSMG) was promoted to enhance the adsorption of methylene blue (MB). Experiments were conducted under various conditions, including contact time, initial dye concentration, adsorbent dosage, pH, and temperatures. Data from these experiments were analyzed using several adsorption models including Langmuir, Freundlich, Temkin, and Dubinin-Radushkevich (D-R). The results indicated that, the adsorption fit best with the Freundlich model and that the adsorption process followed a pseudo-second-order kinetic mechanism. Additionally, the thermodynamic analysis indicated the adsorption of MB onto garnet(GA) adsorbents is endothermic, while the sorption onto (OS400) and (OSMG) is an exothermic and non-spontaneous process. The OSMG composite can be used for at least five cycles without significant loss of adsorptive performance, and can easily be separated from the water after treatment.

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“…Many researchers used the adsorption process to remove EBT and MB dyes from aqueous solutions as will be outlined in what follows: Almeida et al [16] used expanded perlite modified with orthophenanthroline to remove EBT dye. Benallou et al [17] studied MB adsorption on olive stones. Azlina et al [18] used raw empty fruit for MB sorption.…”

Section: Applied Environmental Researchmentioning

confidence: 99%

Biochar from Empty Date Fruit Bunch as an Adsorbent to Remove Eriochrome Black T and Methylene Blue from Aqueous Solution

Bella

Bendaikha

2022

App. Envi. Res.

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Date fruit has a significant role in Sahara countries' economies. In this study, a bunch of empty dates waste was used to produce biochar, which will be used to adsorb Eriochrome black T (EBT) and methylene blue (MB) dyes from aqueous solution. The dates bunch was washed, dried, and ground into small particles. Then it was heated in a muffle furnace at 850 °C. The biochar from empty date bunches (BEDB) characteristics before and after adsorption was determined by using scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. The experiment has used different parameters notably initial concentration (25 – 100 mg L-1), contact time (0 – 90 min), BEDB amount (0.01 – 0.05 g), and different solutions pH (2 – 10) in batch adsorption. This investigation has shown that Langmuir and pseudo-second-order isotherm models were well-fitted than Freundlich and pseudo-first-order. The maximum capacity of adsorption was 58.47 and 80.64 mg g-1 for EBT and MB removal, respectively at 25°C. The results obtained show that BEDB sorbent has an important adsorption capacity of dyes removal and has a performance to eliminate EBT and MB dyes from aqueous solution.

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Valorization of olive stones into a granular activated carbon for the removal of Methylene blue in batch and fixed bed modes

Cited by 11 publications

References 24 publications

Activated Olive Stones as a Low-Cost and Environmentally Friendly Adsorbent for Removing Cephalosporin C from Aqueous Solutions

Activated Olive Stones as a Low-Cost and Environmentally Friendly Adsorbent for Removing Cephalosporin C from Aqueous Solutions

Synthesis of activated carbon composited with Egyptian black sand for enhanced adsorption performance toward methylene blue dye

Biochar from Empty Date Fruit Bunch as an Adsorbent to Remove Eriochrome Black T and Methylene Blue from Aqueous Solution

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