Synthesis and characterization of arginine-doped polyaniline/walnut shell hybrid composite with superior clean-up ability for chromium (VI) from aqueous media: Equilibrium, reusability and process optimization
| Autor: | Rajae Lakhmiri, Rabah Boukherroub, Abdallah Albourine, Abdelghani Hsini, Yassine Naciri, Mahmoud El Ouardi, Mohamed Laabd, Zeeshan Ajmal |
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| Přispěvatelé: | Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), NanoBioInterfaces - IEMN (NBI - IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Thermogravimetric analysis
Materials science Composite number 02 engineering and technology [CHIM.MATE]Chemical Sciences/Material chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Interfacial polymerization Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Adsorption Differential scanning calorimetry Chemical engineering Desorption Materials Chemistry Freundlich equation Surface charge Physical and Theoretical Chemistry 0210 nano-technology Spectroscopy ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Journal of Molecular Liquids Journal of Molecular Liquids, Elsevier, 2020, 316, pp.113832. ⟨10.1016/j.molliq.2020.113832⟩ Journal of Molecular Liquids, 2020, 316, pp.113832. ⟨10.1016/j.molliq.2020.113832⟩ |
| ISSN: | 0167-7322 |
| Popis: | Arginine-doped polyaniline@walnut shell (Arg-PANI@WNS) hybrid composite was prepared through interfacial polymerization reaction of aniline on the walnut shell particles surface in the presence of arginine. The as-synthetized composite characterization was made through energy dispersive X-ray spectroscopy (EDS), field emission scanning electron microscopy (FE-SEM), Fourier transform infrared (FT-IR) spectroscopy, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and surface charge analysis. The Arg-PANI@WNS composite was subjected to Cr(VI) adsorption experiments from artificially contaminated solutions. Kinetics and equilibrium results were satisfactorily tailored via pseudo-second-order model and Freundlich isotherm. Optimum monolayer uptake capacities at pH 2 and 303 K were 450.53 and 562.83 mg·g−1 for PANI@WNS (prepared under otherwise identical conditions in the absence of arginine) and Arg-PANI@WNS, respectively. The Cr(VI) species binding mechanism was elucidated by the electrostatic interactions as a pivotal driving force. Desorption results demonstrated the excellent reusability of Arg-PANI@WNS composite during the clean-up of solutions containing Cr(VI) ions. Furthermore, Cr(VI) ions adsorption process was optimized via response surface methodology (RSM). Under optimized conditions, using Arg-PANI@WNS dose of 0.30 g·L−1 and Cr(VI) concentration of 50 mg·L−1 at pH 2 and 303 K, the predicted Cr(VI) ions removal efficiency was found to be 99.8%, which correlates reasonably well with actual values. Thus, the results obtained in the present study clearly revealed that the as-synthesized Arg-PANI@WNS hybrid composite could be taken as a potential filter to effectively clean-up hazardous Cr(VI) ions in industrial effluents. |
| Databáze: | OpenAIRE |
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