Deep eutectic solvent-modified polyvinyl alcohol/chitosan thin film membrane for dye adsorption: Machine learning modeling, experimental, and density functional theory calculations

International Journal of Biological Macromolecules, Год журнала: 2025, Номер 294, С. 139479 - 139479

Опубликована: Янв. 5, 2025

Язык: Английский

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Valorization of the performance of novel and natural sodium alginate/pectin/Portulaca oleracea L. ternary composites in the adsorption of toxic methylene blue dye from the aquatic environment

International Journal of Biological Macromolecules, Год журнала: 2024, Номер 282, С. 136867 - 136867

Опубликована: Окт. 25, 2024

Язык: Английский

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Adsorption Performance and Mechanistic Pathways of Raw Powdered Pine Cone Toward the Removal of Dye and Cr(VI)

International Journal of Chemical Kinetics, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

ABSTRACT This work aims to valorize pine cones powder (PCP), an agricultural waste, as a bioadsorbent for the removal of cationic dye, Rhodamine B (RhB), and hexavalent chromium Cr(VI) from aqueous solution. The adsorbent was characterized by scanning electron microscopy (SEM), Fourier‐transformed infrared (FTIR), X‐ray diffractometer (XRD) spectroscopy. Adsorption studies were carried out in batch mode under different operating parameters like initial solution pH (2–11), dosage (0.025–0.6 g), contaminant concentration (20–100 mg/L), temperature (283–328K), contact time (0–120 min), ionic strength (NaCl, MgCl 2 , CuSO 4 Na SO FeCl 3 ). optimum conditions adsorption were; ([Cr(VI)] = 30 mg/L, 2, dose 1.5 g/L, T 25°C), RhB: ([RhB] 4.6, 25°C). Under these conditions, maximum capacities reached 19.861 6.565 mg/g, RhB, respectively. inhibiting effect studied salts on RhB dye metal ion is follows: > NaCl. Freundlich isotherm described best Cr (VI) onto PCP, since it gave highest R values (R ≥ 0.983) associated with lowest error (χ RMSE, Δq). calculated Dubinin–Radushkevich mean energy (E) less than 8 kJ/mol. It 3.391 kJ/mol 2.310 sorption, respectively, confirming physical character PCP sorbent. Experimental data fitted well pseudo‐second‐order kinetic model 0.997). According thermodynamic analysis, retention followed physisorption, endothermic, spontaneous process at all temperatures Cr(VI), higher dye. These results suggest that raw may be envisaged promising biosorbent water remediation without need costly heat activation processes cheap sustainable process.

Язык: Английский

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Selective capture and co-removal of anionic dyes with multi-metallic nanosheets: Superior properties and multi-sites synergistic mechanism

Journal of Water Process Engineering, Год журнала: 2025, Номер 74, С. 107797 - 107797

Опубликована: Апрель 27, 2025

Язык: Английский

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Synthesis of red mud/metakaolin based geopolymer for adsorption of methylene blue and tetracycline hydrochloride from water

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2025, Номер unknown, С. 137155 - 137155

Опубликована: Май 1, 2025

Язык: Английский

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Revealing Efficacy of AgCuFe2O4@GO/MnO2 in 3D Electrochemical Oxidation for Ceftriaxone Degradation in Aqueous Media: Optimization and Mechanisms

Environmental Technology & Innovation, Год журнала: 2024, Номер unknown, С. 103914 - 103914

Опубликована: Ноя. 1, 2024

Язык: Английский

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Sunlight-Driven Photodegradation of RB49 Dye Using TiO2-P25 and TiO2-UV100: Performance Comparison

Coatings, Год журнала: 2024, Номер 14(10), С. 1270 - 1270

Опубликована: Окт. 3, 2024

By combining measurements of photocatalysis under solar irradiation with total organic carbon, we have compared the performance two TiO2-based photocatalysts in photodegradation dye Reactive Blue 49 (RB49). TiO2-P25 and TiO2-UV100 commercial were tested within a concentration ranging from 0.5 to 4 g/L. The solution was varied 10 50 mg/L its pH increased 3 9. Extensive characterization performed using Fourier-transform infrared spectroscopy, scanning electron microscopy X-ray diffraction. proved be more active adsorbing RB49 than TiO2-P25. At low concentrations, adsorption equilibrium is reached 15 min. This time increases 1 h at higher concentrations. photocatalytic degradation aqueous sunlight monitored by UV-Vis spectrophotometry. apparent rate constant twice that carbon (TOC) analysis showed removal around 98% only 85% after irradiation. Over five cycles h, maintained stable efficient performance. All our results converge toward better for indicate most decisive factor greater capacity adsorb pollutant.

Язык: Английский

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From waste to resource: Transforming waste carbon felt into efficient cathodes for circular economy practices

Chemical Engineering Science, Год журнала: 2024, Номер unknown, С. 121162 - 121162

Опубликована: Дек. 1, 2024

Язык: Английский

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