Modified Magnetite Nanoparticles for Hexavalent Chromium Removal from Water
| Autor: | Somayeh Tourani, Marzieh Kavianimehr, Tofigh Sayahi, Ramin Ghasemi |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Nanocomposite Polymers and Plastics Inorganic chemistry chemistry.chemical_element 02 engineering and technology Carbon nanotube 010501 environmental sciences 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films law.invention chemistry.chemical_compound Chromium Adsorption chemistry Chemical engineering law Magnetic nanoparticles Water treatment Physical and Theoretical Chemistry Hexavalent chromium 0210 nano-technology 0105 earth and related environmental sciences Magnetite |
| Zdroj: | Journal of Dispersion Science and Technology. 37:1303-1314 |
| ISSN: | 1532-2351 0193-2691 |
| DOI: | 10.1080/01932691.2015.1090906 |
| Popis: | Water treatment is an important concern of human societies. Using magnetic nanoparticles as adsorbents for metal removal has been greatly considered due to their particular characteristics such as small sizes, high surface area to volume ratios, and good magnetic properties. In the present study, a modification was implemented in magnetite particles by functionalized carbon nanotubes and carboxylic groups to enhance the performance of magnetite particles in removing hexavalent chromium from water using the adsorption method. The applicability of the nanoadsorbent and magnetic nanoparticles was compared based on adsorption factors affecting the chromium removal including pH, contact time, pollutant concentration, and the adsorbent amount. Properties of the nanocomposites were analyzed by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results show that the highest percentage of Cr (VI) removal for both adsorbents was under acidic ambient conditions and lasted less than 45 minutes. T... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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