The potential of functionalized graphene-based composites for removing heavy metals and organic pollutants

Journal of Water Process Engineering, Год журнала: 2023, Номер 53, С. 103809 - 103809

Опубликована: Май 16, 2023

Язык: Английский

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Synthesis and optimization of activated carbon from Doum (Chamaerops humilis) fiber via pyrolysis-assisted H3PO4 activation for removal of bisphenol A and α-Naphthol

Diamond and Related Materials, Год журнала: 2024, Номер 145, С. 111061 - 111061

Опубликована: Апрель 8, 2024

Язык: Английский

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Facile synthesis of eco-friendly activated carbon from leaves of sugar beet waste as a superior nonconventional adsorbent for anionic and cationic dyes from aqueous solutions

Arabian Journal of Chemistry, Год журнала: 2023, Номер 16(8), С. 104900 - 104900

Опубликована: Апрель 12, 2023

The current study presents a unique and innovative approach to sustainable activated carbon (AC) synthesis using non-conventional agricultural wastes, leaves of sugar beet (LSB), via thermo-chemical activation process. This not only offers solution for LSB elimination, but also provides an eco-friendly alternative commercially available carbon. process was conducted at various ratios H3PO4 / (0.5:1, 1:1, 2:1, 3:1 w/w ratios) fixed temperature (550 °C/2h). amorphous nature, porous structure, BET surface area (SBET = 700.7 m2/g), chemistry nominated the synthesized AC 2:1 ratio as superior adsorbent material methyl orange, MO, methylene blue, MB, from standard solutions in batch system different experimental conditions. Kinetic investigations revealed that pseudo-second order equation explained sorption data well. In contrast, intra-particle diffusion limiting stage adsorption addressed dyes. Similarly, linear Langmuir described investigated dyes better than Freundlich one with maximum removal capacity (qmax) 185.2 140.8 mg/g MB orderly. confirms homogenous/monolayer nature adsorbed ions through isoenergetic active sites upon AC(2:1) surface. Furthermore, electrostatic attraction leading mechanism both dyes, substantial participations by hydrophobic hydrogen-bonding forces may be considered.

Язык: Английский

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Malachite green dye adsorption by jackfruit based activated carbon: Optimization, mass transfer simulation and surface area prediction

Diamond and Related Materials, Год журнала: 2023, Номер 136, С. 109991 - 109991

Опубликована: Май 4, 2023

Язык: Английский

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Production of eco-friendly adsorbent of kaolin clay and cellulose extracted from peanut shells for removal of methylene blue and congo red removal dyes

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 263, С. 130304 - 130304

Опубликована: Фев. 20, 2024

Язык: Английский

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Methylene blue dye efficient removal using activated carbon developed from waste cigarette butts: Adsorption, thermodynamic and kinetics

Fuel, Год журнала: 2024, Номер 372, С. 132151 - 132151

Опубликована: Июнь 12, 2024

Язык: Английский

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A novel oil palm frond magnetic biochar for the efficient adsorption of crystal violet and sunset yellow dyes from aqueous solution: synthesis, kinetics, isotherm, mechanism and reusability studies

Applied Water Science, Год журнала: 2024, Номер 14(2)

Опубликована: Янв. 9, 2024

Abstract This study presented a facile synthesis route via the precipitation method for production of magnetic biochar from oil palm frond (OPF). The physicochemical characteristics including surface, functional, and properties synthesized revealed that surface morphology, porosity, enhanced its adsorption capacity removal crystal violet (CV) sunset yellow (SY) aqueous solution. saturation magnetization OPF was found to be 8.41 emu/g, coercivity (Hc) 83.106 G, retentivity (Mr) 1.475 emu/g which implies can facilely separated result also demonstrated superparamagnetic provided suitable responsive an external field. interactive effect operational conditions pH, adsorbent dosage, initial concentration, temperature investigated in batch using central composite design (CCD) response methodology (RSM). It indicated increase dosage 1.0 g/L at lower concentration (50 ppm) conducted 20 °C favoured optimum CV SY pH 11 4, respectively. Langmuir isotherm model with maximum ( $$q_{\max }$$ q max ) 149.03 342.47 mg/g achieved dyes, kinetic data proved best fitted pseudo-second-order model. Thermodynamic parameters spontaneous endothermic reactions. suitability sustainability were by regeneration potential effective after 5 cycles indicates outstanding reusability. Hence, exhibited prospective application dyes wastewater.

Язык: Английский

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Adsorptive removal of cationic dye from aqueous solutions using activated carbon prepared from Crataegus monogyna/sodium alginate/polyaniline composite beads: Experimental study and molecular dynamic simulation

Journal of Molecular Liquids, Год журнала: 2024, Номер 408, С. 125372 - 125372

Опубликована: Июнь 27, 2024

Язык: Английский

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Removal of methylene blue from aqueous solution by adsorption onto hydroxyapatite nanoparticles

Journal of Molecular Structure, Год журнала: 2023, Номер 1288, С. 135807 - 135807

Опубликована: Май 19, 2023

Язык: Английский

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Fabrication of magnetic chitosan-grafted salicylaldehyde/nanoclay for removal of azo dye: BBD optimization, characterization, and mechanistic study

International Journal of Biological Macromolecules, Год журнала: 2023, Номер 248, С. 125943 - 125943

Опубликована: Июль 22, 2023

Язык: Английский

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