Graphene oxide functionalized chitosan-magnetite nanocomposite for removal of Cu(II) and Cr(VI) from waste water
| Autor: | B. Vishalakshi, N. Manju, S.M. Anush, Asma, B.H. Gayathri, Balakrishna Kalluraya, H.R. Chandan |
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| Rok vydání: | 2020 |
| Předmět: |
Chromium
Materials science Metal ions in aqueous solution Oxide 02 engineering and technology Chemistry Techniques Synthetic Wastewater Biochemistry Nanocomposites Water Purification Chitosan 03 medical and health sciences chemistry.chemical_compound symbols.namesake Adsorption X-Ray Diffraction Structural Biology Desorption Molecular Biology Schiff Bases 030304 developmental biology 0303 health sciences Aqueous solution Nanocomposite Molecular Structure Langmuir adsorption model General Medicine Models Theoretical 021001 nanoscience & nanotechnology Kinetics chemistry symbols Thermodynamics Graphite Magnetic Iron Oxide Nanoparticles 0210 nano-technology Algorithms Copper Water Pollutants Chemical Nuclear chemistry |
| Zdroj: | International journal of biological macromolecules. 164 |
| ISSN: | 1879-0003 |
| Popis: | A novel adsorbent material for removal of metal ions from aqueous solution was made by modifying chitosan. The schiff base prepared from reaction of chitosan with 3-(p-anisyl)-4-formylsydnone was further functionalized with graphene oxide. Finally Fe3O4 nanoparticles were incorporated into the modified chitosan to obtain a novel adsorbent material. The nanocomposite made was characterized using FTIR, TGA, SEM, EDS and XRD techniques and evaluated for adsorptive removal of Cu(II) and Cr(VI) ions from aqueous solutions. The maximum adsorption capacities of the adsorbent for Cu(II) and Cr(VI) ions were found to be 111.11 and 142.85 mgg−1 respectively. The adsorption data fitted well with Langmuir isotherm model and followed pseudo second order kinetic model. Thermodynamic parameters indicated the adsorption to be spontaneous and endothermic. The desorption studies revealed the efficient recovery of adsorbate species and possible reusability of the adsorbent material. |
| Databáze: | OpenAIRE |
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