Application of modificated magnetic nanomaterial for optimization of ultrasound-enhanced removal of Pb2+ ions from aqueous solution under experimental design: Investigation of kinetic and isotherm |
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| Institution: | 1. Chemistry Department, Yasouj University, Yasouj 75914-35, Iran;2. Chemistry Department, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran;1. Department of Programming and Mathematics, Volodymyr Dahl East Ukrainian National University, Severodonetsk, Ukraine;2. Computer Science and Technology Department, Kryvyi Rih National University, Kryvyi Rih, Ukraine;1. Chaire Unesco « Sur la gestion de l''eau », Laboratoire Hydrosciences Lavoisier, Université de Bangui, Faculté des Sciences, B.P. 908, Central African Republic;3. Université Lille1, Service RMN, Bât. C4, 59655 Villeneuve d''Ascq cedex, France;4. Université Lille1, Institut Chevreul, 59655 Villeneuve d''Ascq cedex, France;1. Metabolic Bone Unit, Endocrinology Division (RETICEF), Hospital Universitario San Cecilio, Instituto de Investigación Biosanitaria (ibs.GRANADA), Granada, Spain;2. RETICEF, Instituto de Salud Carlos III, Spain;3. Proteomic Research Service, Hospital Universitario San Cecilio, Instituto de Investigación Biosanitaria de Granada (ibs.GRANADA), Granada, Spain;4. Hospital del Mar-IMIM-UAB, Department of Internal Medicine, Barcelona, Spain;5. Hospital Universitario Marqués Valdecilla, Department of Internal Medicine, Santander, Spain;6. Osteoporosis Research Group. Universidad de Las Palmas de Gran Canaria. Las Palmas de Gran Canaria, Spain;7. Fundación Jiménez Díaz, Department of Internal Medicine, Madrid, Spain;8. Hospital Universitario Río Ortega, Department of Internal Medicine, Valladolid, Spain;9. Hospital Virgen Macarena. Department of Internal Medicine, Sevilla, Spain;10. Hospital La Paz, Department of Rheumatology, Madrid, Spain;11. Hospital Universitario Quirón, Department of Endocrinology, Madrid, Spain;12. CETIR Medical Centre, Barcelona, Spain;13. Trabeculae, Ourense, Spain |
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| Abstract: | Magnetic γ-Fe2O3 nanoparticles modificated by bis(5-bromosalicylidene)-1,3-propandiamine (M-γ-Fe2O3-NPs-BBSPN) and characterized by field emission scanning electron microscopy (FE-SEM), Fourier transforms infrared spectroscopy (FT-IR) and X-ray diffraction (XRD). This modified compound as novel adsorbent was applied for the ultrasound-assisted removal of Pb2+ ion in combination with flame atomic absorption spectroscopy (FAAS). The influences of the effective parameters including initial Pb2+ ion concentration, pH, adsorbent mass and ultrasound time were optimized by central composite design (CCD). Maximum removal percentage of Pb2+ ion which obtained at 25 mg L−1 of Pb2+, 25 mg of adsorbent and 4 min mixing with sonication at pH 6.0. The precision of the equation obtained by CCD was confirmed by the analysis of variance and calculation of correlation coefficient relating the predicted and the experimental values of removal percentage of Pb2+ ion. The kinetic and isotherm of ultrasound-assisted removal of Pb2+ ion was well described by second-order kinetic and Langmuir isotherm model with maximum adsorption capacity of 163.57 mg g−1. |
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| Keywords: | Bis(5-bromosalicylidene)-1 3-propandiamine Central composite design Ultrasound-assisted removal |
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