Magnetic sedimentation of nonmagnetic TiO2 nanoparticles in water by heteroaggregation with Fe-based nanoparticles
| Autor: | Iuliia Bakhteeva, Marina S. Filinkova, Mikhail A. Uimin, S. V. Zhakov, Ilia V. Byzov, A. E. Yermakov, Irina Medvedeva |
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| Rok vydání: | 2019 |
| Předmět: |
Flocculation
Materials science Sedimentation (water treatment) Tio2 nanoparticles Composite number Nanoparticle Filtration and Separation 02 engineering and technology 021001 nanoscience & nanotechnology Analytical Chemistry Magnetic field 020401 chemical engineering Chemical engineering Phase (matter) Fe based 0204 chemical engineering 0210 nano-technology |
| Zdroj: | Separation and Purification Technology. 218:156-163 |
| ISSN: | 1383-5866 |
| DOI: | 10.1016/j.seppur.2019.02.043 |
| Popis: | A new approach to remove TiO2 nanoparticles from water is studied. Composite Fe3O4-SiO2 and Fe-C-SO3H nanoparticles with magnetic cores (5 nm) were designed to be used as flocculants for magnetic sedimentation of nonmagnetic TiO2 nanoparticles in water. The sedimentation dynamics of heterogeneous water suspensions (starting solid phase concentration of 100 mg/l) of (TiO2)1−x(Fe3O4-SiO2)x (x = 0.15–0.55) and (TiO2)1−x(Fe-C-SO3H)x (x = 0.01–0.17) was studied in a gradient magnetic field (B = 0.3 T, dB/dz |
| Databáze: | OpenAIRE |
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