Structure and morphology of chars and activated carbons obtained from thermal treatment of coal and biomass origin materials, including their wastes: Results from the ICCP Microscopy of Carbon Materials Working Group

International Journal of Coal Geology, Год журнала: 2024, Номер 288, С. 104519 - 104519

Опубликована: Май 1, 2024

Язык: Английский

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Enhanced removal of Cr(VI) from water using alginate-modified algal biochar: a promising adsorbent

Biomass Conversion and Biorefinery, Год журнала: 2024, Номер unknown

Опубликована: Июнь 8, 2024

Язык: Английский

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Efficient Removal of Cr (VI) and As (V) from Aqueous Solution Using Magnetically Separable Nickel Ferrite Nanoparticles

Journal of Cluster Science, Год журнала: 2024, Номер 36(1)

Опубликована: Дек. 2, 2024

Abstract A promising nickel ferrite (NiFe 2 O 4 ) NPs with excellent magnetic characteristics was synthesized using an aqueous-based reflux approach that eliminates the need for calcination temperature. The nanoparticles obtained were analysed X-ray diffraction (XRD), Fourier-transform infrared (FTIR), and scanning electron microscopy (SEM). analysis showed had a spherical shape average size ranging from 18 to 29 nm. is utilized removal of hexavalent chromium (Cr (VI)) pentavalent arsenic (As (V)) ions aqueous solution through adsorption method. Cr (VI) achieved maximum efficiency 65% after 120 minutes at pH 5, dose g/L concentration 25 mg/L. while As (V) 1 initial mg/L 77% minutes. In addition, data isotherms Langmuir (R = 0.99, 0.98), Freundlich 0.86, 0.97) Temkin 0.83, 0.97). governed by pseudo first-order kinetics process, whereas second-order reaction. After five adsorption–desorption cycles same optimal operating condition, dropped 65%, 25%, 30%, respectively.

Язык: Английский

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Insights into Preparation of Polycaprolactone–Chitosan–Montmorillonite Composite for Pb(II) and Cd(II) Removal

ChemistrySelect, Год журнала: 2025, Номер 10(16)

Опубликована: Апрель 1, 2025

Abstract Industries frequently discharge elevated levels of lead and cadmium into the environment, posing significant threats to ecological balance public health. This study developed a novel polycaprolactone–chitosan–montmorillonite (PCL/CS/MMT) composite adsorb Pb(II) Cd(II) from aqueous solutions. The was synthesized via twin‐screw melt extrusion subsequently characterized using X‐ray diffraction (XRD), scanning electron microscopy (SEM), energy‐dispersive spectroscopy (EDS), Fourier transform infrared (FTIR), thermogravimetric analysis (TGA), revealing crystalline structure, cracked surface morphology, functionalized groups, thermal stability. Under optimal batch conditions, adsorbent achieved maximum adsorption capacities 12.35 mg/g for 16.92 Cd(II). Adsorption behavior followed Langmuir isotherm model, kinetic data aligned with pseudo second‐order indicating chemisorption‐driven mechanism. demonstrated effective regeneration, retaining over 55% efficiency after seven desorption cycles 0.1 M (pH 8). These findings position PCL/CS/MMT as promising, sustainable wastewater treatment, offering viable solution heavy metal pollution advancing development eco‐friendly materials environmental remediation.

Язык: Английский

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Novel biocomposites based on carbon xerogel derived from tannin for improved cobalt (II) adsorption: practical and theoretical approaches

Diamond and Related Materials, Год журнала: 2024, Номер 147, С. 111302 - 111302

Опубликована: Июнь 19, 2024

Язык: Английский

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