Induced effects of gamma irradiation on activated carbon derived from Hyphaene Thebaica husks as a potential adsorbent for chlorpyrifos pesticide-air purification

Elzaref, Ahmed S.; Yahia, Mohamed Saber; Youssef, H.; Elfeky, Ahmed S.; Awad, Magdy Bahi El-Deen

doi:10.21608/ejchem.2021.98168.4576

Cited by 3 publications

(3 citation statements)

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“…The generated activated carbon (OS400) leave to cool down inside the furnace to room temperature then washed with 0.1 M HCl, then hot distilled water several times up to pH 6-7 for the filtrate solution. The final product dried at 105 °C for 24h, then stored in a sealed container [18].…”

Section: Preparation Of Olive Stone Activated Carbon (Os400)mentioning

confidence: 99%

“…Activated carbon is one of the most often used adsorbents for water treatment because of its clear porous nature, efficacy, availability, higher capacity for adsorption, a high surface area, a variety of porosity, and surface characteristics with a high degree of reactivity are also present [16,17]. The agricultural wastes are a good choice for making AC [18]. One of the widely accessible agricultural production byproducts is olive stones (OS) [19].…”

Section: Introductionmentioning

confidence: 99%

“…Carbon is produced and activated by various method, chemically or physically, to improve some properties, and some of the physical methods by using radiation or microwaves [18,26]. The use of microwave technology to create AC from industrial agro-waste has been studied, and the results are encouraging [27].…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Activated Carbon Composited With Egyptian Black Sand for Enhanced Adsorption Performance toward Methylene Blue Dye

ElKholy

Yahia²,

El-Nawawy

et al. 2022

Preprint

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The present study reports the feasibility of the synthesis of a novel porous activated carbon (OS400) composite adsorbent prepared from olive stone and impregnated with garnet (GA) types of black sand minerals. The Activated Carbon/ garnet composite (OSMG) was applied for the sorption of macromolecular organic dye. The structural characteristics of the synthesized composite were evaluated by Brunauer–Emmett–Teller (BET), N2 adsorption/desorption measurements, 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 (GA), (OS400), and (OSMG) were 5.157 m2.g− 1, 1489.598 m2.g− 1, and 546.392 m2.g− 1, respectively. The high specific surface area and effective active centers of the new composite promoted the adsorption of methylene blue (MB). The experiments were carried out under various conditions such as contact time, initial concentration of adsorbate, adsorbent dosage, pH, and temperatures. The equilibrium adsorption data were evaluated using the Langmuir and Freundlich isotherm models. The results display that, the adsorption isotherm had an excellent fitting to the Freundlich model. Furthermore, the data obtained from adsorption kinetic models showed that the pseudo-second-order model more agreeing for describing the (MB) adsorption reaction, suggesting a chemisorption mechanism. The values of thermodynamic parameters indicate that methylene blue dye adsorption onto the (GA) adsorbents through an endothermic reaction, while exothermic sorption of MB onto (OS400) and (OSMG), with a non-spontaneous process.

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Section: Preparation Of Olive Stone Activated Carbon (Os400)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis of Activated Carbon Composited With Egyptian Black Sand for Enhanced Adsorption Performance toward Methylene Blue Dye

ElKholy

Yahia²,

El-Nawawy

et al. 2022

Preprint

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Adsorptive efficiency of hull-based activated carbon toward copper ions (Cu2+) removal from aqueous solution: Kinetics, modelling and statistical analysis

Fita,

Djakba,

Mouhamadou

et al. 2023

Diamond and Related Materials

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The Role of Water in the Adsorption of Nitro-Organic Pollutants on Activated Carbon

Adjal,

Timón,

Guechtouli

et al. 2023

J. Phys. Chem. A

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The density functional theory (DFT) is applied to theoretically study the capture and storage of three different nitro polycyclic aromatic hydrocarbons, 4-nitrophenol, 2-nitrophenol, and 9-nitroanthracene by activated carbon, with and without the presence of water. These species are pollutants derived from vehicle and industry emissions. The modeling of adsorption is carried out at the molecular level using a high-level density functional theory with the B3LYP-GD(BJ)/6-31+G(d,p) level of theory. The adsorption energies of polluting gases considered isolated and in a humid environment are compared to better understand the role of water. The calculations reveal different possible pathways involving the formation of chemical bonds between adsorbent and adsorbate on the formation of intermolecular van der Waals interactions. The negative adsorption energy on AC for the three species is obtained when they are treated individually and in mixture with H2O. The basis-set superposition error, estimated using the counterpoise correction, varies the adsorption energies by 2–13%. Dispersion effects were also taken into account. The adsorption energy ranges from −10 to −414 kJ/mol suggesting a diversity of pathways. The resulting analysis suggests three preferred pathways for capture. The main pathway is physical interaction due to π–π stacking. Other means are capture due to the formation of hydrogen bonds resulting from water adsorbed on the surface and the simultaneous adsorption of pollutant and water where water can act as a link that promotes adsorption. The thermodynamic properties give a clue to the most eco-friendly approaches for molecular adsorption.

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Induced effects of gamma irradiation on activated carbon derived from Hyphaene Thebaica husks as a potential adsorbent for chlorpyrifos pesticide-air purification

Cited by 3 publications

References 0 publications

Synthesis of Activated Carbon Composited With Egyptian Black Sand for Enhanced Adsorption Performance toward Methylene Blue Dye

Synthesis of Activated Carbon Composited With Egyptian Black Sand for Enhanced Adsorption Performance toward Methylene Blue Dye

Adsorptive efficiency of hull-based activated carbon toward copper ions (Cu2+) removal from aqueous solution: Kinetics, modelling and statistical analysis

The Role of Water in the Adsorption of Nitro-Organic Pollutants on Activated Carbon

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