Treatment of tellurium containing stream using ferrite process and its characterization
| Autor: | Ki-Yong Lee, Shin-Jo Kim |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Chemistry
Metal ions in aqueous solution Metallurgy Spinel chemistry.chemical_element Ocean Engineering engineering.material Pollution Ferrous Metal chemistry.chemical_compound Ferrite (iron) visual_art engineering visual_art.visual_art_medium Hydroxide Tellurium Water Science and Technology Magnetite |
| Zdroj: | Desalination and Water Treatment. 22:238-243 |
| ISSN: | 1944-3986 1944-3994 |
| DOI: | 10.5004/dwt.2010.1792 |
| Popis: | Ferrite containing heavy metals is precipitated when heavy metal ions come into coexistence in the wet method of the ferrite process. Based on this theory, this paper examines the treatable limitation, actual shape beyond that limitation, and the property of the sludge formed on tellurium compound restricted by the Basel Convention as a hazardous heavy metal. We have discovered that the ferrite process treatment could be applied in tellurium solution with the initial concentration up to 25 ppm. Furthermore, we are able to confirm that when the initial concentration exceeds 25 ppm, tellurium ion tends no longer to be incorporated into the spinel structure of ferrite with causing difficulties in the ferrite process. The applicable limitation from the experiment results of this study on tellurium treatment by ferrite process appears to be around 25 ppm for both Te4+ and Te6+. In both cases, needle shaped crystal of α-FeOOH (Goethite), which is a by-product of ferrous hydroxide, can no longer be observed in a... |
| Databáze: | OpenAIRE |
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