Orange peel + nanostructured zero-valent-iron composite for the removal of hexavalent chromium in water
| Autor: | A. Cabral-Prieto, Rafael López-Castañares, U. Salcedo-Castillo, Gustavo López-Téllez, Oscar Olea-Mejia, O. Olea-Cardoso |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Composite number Inorganic chemistry General Physics and Astronomy 02 engineering and technology 010501 environmental sciences 01 natural sciences Metal Colloid chemistry.chemical_compound Mössbauer spectroscopy Hexavalent chromium 0105 earth and related environmental sciences Zerovalent iron Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films Chemical state chemistry visual_art visual_art.visual_art_medium Methanol 0210 nano-technology Nuclear chemistry |
| Zdroj: | Applied Surface Science. 423:170-175 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2017.06.173 |
| Popis: | In this work we used the Pulsed Plasma in Liquid technique to synthesize zero-valent iron nanostructures. We used a DC Power Source to produce such plasma on water and methanol. The obtained particles were characterized by TEM to determine their shape and size and Mossbauer Spectroscopy to investigate the chemical state of the iron present. We found that 80% of the particles produced in water are composed of metallic iron and when methanol is used 97% of the particles are metallic iron. Once the Fe colloid was formed, orange skin was impregnated with these nanostructures for the removal of in water solution. The Cr(VI) removal experiments were done in a batch system in the presence of the composites at an inicial concentration of 50 ppm of Cr(VI). When using the iron nanostructures supported on the orange peel, the percentage of removal is 100% in the case of nanostructures formed in water and 96% when obtained in methanol. |
| Databáze: | OpenAIRE |
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