Synthesis of magnetic hydrogels based on polysaccharides for wastewater and water treatment application

• Grant number: 08/00285-7
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: May 01, 2008
• End date: April 30, 2012
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Elias Basile Tambourgi
• Grantee: Alexandre Tadeu Paulino
• Host Institution: Faculdade de Engenharia Química (FEQ). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil

Abstract

Polysaccharide-based hydrogels are a group of composites widely applied in controlled drug release systems, pharmacy, biotechnology, biomedicine, and wastewater and water treatment. On the other hand, polysaccharide-based hydrogels with magnetic properties are excellent composites comparatively to those without magnetization. Nevertheless, magnetic hydrogels have demonstrated to be more efficient and selective and quicker in applications. In addition, magnetic hydrogels may be applied as precursors in cancer cell treatment, enzyme immobilization, magnetic biosensor production, and nanoparticle production. In this work, it will be carried out the synthesis of hydrogels based on chitosan-co-poly(acrylic acid), modified malto-dextrin-co-poly(acrylamide), and modified arabic gum-co-poly(acrylamide), both in the presence and the absence of magnetite (Fe3O4). These hydrogels, either with or without magnetic properties, will be characterized by swelling tests, Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (13C NMR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), magnetization curves, and Mössbauer spectroscopy. The obtained hydrogels will be applied in the removal of heavy metals and dyes from wastewater and water. In addition, these hydrogels may be applicable to either large scale wastewater and water treatment or to magnetic biosensor production, as well as to nanoparticle production. (AU)

Scientific publications

(6)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

PAULINO, ALEXANDRE T.; BELFIORE, LAURENCE A.; KUBOTA, LAURO T.; MUNIZ, EDVANI C.; ALMEIDA, VITOR C.; TAMBOURGI, ELIAS B.. Effect of magnetite on the adsorption behavior of Pb(II), Cd(II), and Cu(II) in chitosan-based hydrogels. DESALINATION, v. 275, n. 1-3, p. 187-196, JUL 15 2011. (08/00285-7)

PAULINO, ALEXANDRE T.; GUILHERME, MARCOS R.; DE ALMEIDA, ELISANGELA A. M. S.; PEREIRA, ANTONIO G. B.; MUNIZ, EDVANI C.; TAMBOURGI, ELIAS B.. One-pot synthesis of a chitosan-based hydrogel as a potential device for magnetic biomaterial. Journal of Magnetism and Magnetic Materials, v. 321, n. 17, p. 2636-2642, SEP 2009. (08/00285-7)

PAULINO, ALEXANDRE T.; PEREIRA, ANTONIO G. B.; FAJARDO, ANDRE R.; ERICKSON, KRISTIN; KIPPER, MATT J.; MUNIZ, EDVANI C.; BELFIORE, LAURENCE A.; TAMBOURGI, ELIAS B.. Natural polymer-based magnetic hydrogels: Potential vectors for remote-controlled drug release. Carbohydrate Polymers, v. 90, n. 3, p. 1216-1225, OCT 15 2012. (08/00285-7)

PAULINO, ALEXANDRE T.; FAJARDO, ANDRE R.; JUNIOR, ANDREA P.; MUNIZ, EDVANI C.; TAMBOURGI, ELIAS B.. Two-step synthesis and properties of amagnetic-field-sensitive modified maltodextrin-based hydrogel. Polymer International, v. 60, n. 9, p. 1324-1333, SEP 2011. (08/00285-7)

PAULINO, ALEXANDRE TADEU; BELFIORE, LAURENCE ALPHONSE; KUBOTA, LAURO TATSUO; MUNIZ, EDVANI CURTI; TAMBOURGI, ELIAS BASILE. Efficiency of hydrogels based on natural polysaccharides in the removal of Cd2+ ions from aqueous solutions. CHEMICAL ENGINEERING JOURNAL, v. 168, n. 1, p. 68-76, MAR 15 2011. (08/00285-7)

PAULINO, ALEXANDRE T.; GUILHERME, MARCOS R.; MATTOSO, LUIZ H. C.; TAMBOURGI, ELIAS B.. Smart Hydrogels Based on Modified Gum Arabic as a Potential Device for Magnetic Biomaterial. MACROMOLECULAR CHEMISTRY AND PHYSICS, v. 211, n. 11, p. 1196-1205, JUN 1 2010. (08/00285-7)