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Removal Mechanism of As(III) by Ferrihydrite using Co-precipitation or Adsorption process
http://hdl.handle.net/10458/6278
http://hdl.handle.net/10458/627821024750-43fe-4a0d-b4bc-6004cee5df35
| 名前 / ファイル | ライセンス | アクション |
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本文 (381.0 kB)
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| Item type | その他 / Others(1) | |||||
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| 公開日 | 2020-06-21 | |||||
| タイトル | ||||||
| タイトル | Removal Mechanism of As(III) by Ferrihydrite using Co-precipitation or Adsorption process | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | arsenite, co-precipitatio, adsorptio, surfacecompl exation, surface precipitation | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_1843 | |||||
| 資源タイプ | other | |||||
| 著者 |
Kyaw, Swar Oo
× Kyaw, Swar Oo× 所, 千晴× Mitani, Yugo |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Many researchers have been investigated many kinds of treatment methods for arsenic wastewater and reported As（III） is more difficult to be removed than As（V）. We have investigated the arsenic renloval using ferrihydrite co-precipitation process and already reported the removal mechanism of As（V） during the process. On the other hand, the removal mechanism of As（III） has not yet been revealed. Therefore, objective of this study is to reveal the removal mechanism of As（III） from wastewater during fenihydrite co-precipitation process. This study discussed the removal mechanism of As（III） from simulated wastewater with Fe（III） in co-precipitation process. To investigate the removal mechanism in co-precipitation process, all experimental results were compared with simple adsorption process. Arsenic and ferric concentration in filtrate after experiments were analyzed by ICP and precipitates were characterized by XRD analysis. From sorption isotherm, it was revealed that a more efficient removal of As（III） was achieved with co-precipitation process than adsorption one and removal mechanism involved not only surface complexation of As（III） to ferrihydrite but aIso surface precipitation or surface complexation of multiple complexes. These results suggested that removal mechanism changed depending on the initial As/Fe molar ratio and pH change during the removal process. | |||||
| 言語 | en | |||||
| 書誌情報 |
en : 4th InternationalArsenic Symposium in MIYAZAKI 2015 p. 82-86, 発行日 2015-10 |
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| 出版者 | ||||||
| 出版者 | University of Miyazaki, IRISH | |||||
| 言語 | en | |||||
| 著者版フラグ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
