The impact of magnetite nanoparticles on the physicochemical and adsorption properties of magnetic alginate beads
| العنوان: | The impact of magnetite nanoparticles on the physicochemical and adsorption properties of magnetic alginate beads |
|---|---|
| المؤلفون: | Georges Germanos, Stéphane Rioual, Sami Youssef, Benoit Lescop, Maher Abboud, Wehbeh Farah |
| المساهمون: | Lab-STICC_UBO_MOM_DIM, Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université de Brest (UBO)-Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT) |
| المصدر: | Journal of Environmental Chemical Engineering Journal of Environmental Chemical Engineering, Elsevier, 2020, 8 (5), pp.104223. ⟨10.1016/j.jece.2020.104223⟩ |
| بيانات النشر: | HAL CCSD, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | Thermogravimetric analysis, Materials science, Calcium alginate, Scanning electron microscope, Process Chemistry and Technology, chemistry.chemical_element, 02 engineering and technology, 010501 environmental sciences, 021001 nanoscience & nanotechnology, 01 natural sciences, Pollution, Copper, chemistry.chemical_compound, Adsorption, Reaction rate constant, chemistry, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], Chemical Engineering (miscellaneous), Thermal stability, 0210 nano-technology, Waste Management and Disposal, ComputingMilieux_MISCELLANEOUS, 0105 earth and related environmental sciences, Nuclear chemistry, Superparamagnetism |
| الوصف: | In this study, calcium alginate-based adsorbents with magnetic and non-magnetic properties (MABs and ABs) were prepared and the impact of the incorporated magnetite nanoparticles (Fe3O4 NPs) on the physicochemical properties, adsorption kinetics and Cu(II) uptake mechanism was determined. ABs and MABs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and superconducting quantum interference device magnetometer (SQUID). The SEM analysis of the MABs showed that the composite has a rough surface with abundant protuberances. The XRD analysis showed an amorphous structure of the ABs. The TGA analysis revealed higher thermal stability of the MABs compared to ABs. The MABs proved to be superparamagnetic at room temperature. The adsorption experiments of copper ions onto ABs and MABs were also carried out. It was revealed that for the same weight of the alginate matrix, the MABs and the ABs have an adsorption efficiency of 54.9 and 66.7 mg/g, respectively. The adsorption kinetics were followed by a pseudo-second-order kinetic model and the diffusion properties played a significant role in the control of the adsorption kinetics. The adsorption equilibrium rate constant (k2) for the pseudo-second-order model was found to be 1.98 × 10−4 g. mg-1. min-1 for ABs and 3.8 × 10−4 g. mg-1. min-1 for MABs. |
| اللغة: | English |
| تدمد: | 2213-3437 |
| DOI: | 10.1016/j.jece.2020.104223⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55a1fcc2fb58948b1ec3c21b89d42a18 https://hal.archives-ouvertes.fr/hal-02943738 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....55a1fcc2fb58948b1ec3c21b89d42a18 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 22133437 |
|---|---|
| DOI: | 10.1016/j.jece.2020.104223⟩ |