Gum Arabic-Magnetite Nanocomposite as an Eco-Friendly Adsorbent for Removal of Lead(II) Ions from Aqueous Solutions: Equilibrium, Kinetic and Thermodynamic Studies
| Autor: | Mutasem Z. Bani-Fwaz, Adel A. El-Zahhar, Mosbah Jemmali, Ismat H. Ali, Sara A. M. Ebraheem, Riadh Marzouki |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
magnetite Nanocomposite Aqueous solution Materials science gum Arabic Scanning electron microscope adsorption nano-composite lead(II) Physics QC1-999 Langmuir adsorption model Filtration and Separation Endothermic process Analytical Chemistry Chemistry symbols.namesake Adsorption symbols Fourier transform infrared spectroscopy QD1-999 Nuclear chemistry |
| Zdroj: | Separations; Volume 8; Issue 11; Pages: 224 Separations, Vol 8, Iss 224, p 224 (2021) |
| ISSN: | 2297-8739 |
| DOI: | 10.3390/separations8110224 |
| Popis: | In this study, a gum Arabic-magnetite nanocomposite (GA/MNPs) was synthesized using the solution method. The prepared nanocomposite was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), vibrating sample magnetometer (VSM), and thermogravimetric analysis (TGA). The prepared composite was evaluated for the adsorption of lead(II) ions from aqueous solutions. The controlling factors such as pH, contact time, adsorbent dose, initial ion concentration, and temperature were investigated. The optimum adsorption conditions were found to be 0.3 g/50 mL, pH = 6.00, and contact time of 30 min. The experimental data well fitted the pseudo-second-order kinetic model and the Langmuir isotherm model. The maximum adsorption capacity was determined as 50.5 mg/g. Thermodynamic parameters were calculated postulating an endothermic and spontaneous process and a physio-sorption pathway. |
| Databáze: | OpenAIRE |
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