A study on antimony-bearing ferrite
| Autor: | Shin-Jo Kim, Yoshimitsu Suzuki, Mitsuru Arai, Masamitsu Tamura |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Environmental Engineering
Goethite Bearing (mechanical) Materials science Health Toxicology and Mutagenesis Metal ions in aqueous solution Metallurgy Analytical chemistry chemistry.chemical_element Pollution law.invention Metal chemistry.chemical_compound chemistry Antimony law visual_art Ferrite (iron) visual_art.visual_art_medium Environmental Chemistry Particle Waste Management and Disposal Magnetite |
| Zdroj: | Journal of Hazardous Materials. 57:1-12 |
| ISSN: | 0304-3894 |
| DOI: | 10.1016/s0304-3894(97)00005-8 |
| Popis: | Ferrite containing heavy metals is precipitated by the wet method of the ferrite process when heavy metal ions come to coexistence. Based on this process, this paper investigated the treatable limit, existing shape after treatment, and properties of sludge formed on antimony compounds that have been restricted by Basel convention as a hazardous heavy metal. We determined that the ferrite process can be applied in initial concentrations up to 75 ppm in Sb3+ and Sb5+ solutions. For the initial concentrations of antimony exceeding 75 ppm, formation of α-FeOOH (Goethite) appeared gradually and showed difficulties of treatment by the ferrite process. Applicable limits of Sb3+ and Sb5+ from the results of this study were expected to be around 75 ppm and 100 ppm. Ferrite precipitate formed was a spherical particle cohering strongly at an approximate size of 0.1 μm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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