書誌事項
- タイトル別名
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- Decomposition of Aqueous Cyanide Ions by Photocatalytic, Ozone and/or Hydrogen Peroxide Oxidation Routes
- 光触媒,オゾンあるいは過酸化水素によるCN-イオン含有水溶液の分解
- ヒカリ ショクバイ オゾン アルイワ カサンカスイソ ニ ヨル CN イオン ガンユウ スイヨウエキ ノ ブンカイ
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抄録
Decomposition reactions of aqueous CN- ions by TiO2 photocatalyst, ozone and/or hydrogen peroxide were investigated. The principal findings obtained are as follows:<BR>1) The presence of dissolved oxygen was necessary to decompose aqueous CN- ions photocatalytically. CN- was oxidized to CNO- with TiO2 catalyst, and then to CO32- and NO3-. Oxidation reaction of CNO- to CO32- and NO3- was far slower compared to that of CN- to CNO-. Photocatalytic oxidation reaction of CNO- at pHs 7 and 10 proceeded distinctly faster compared to that at pH 12. <BR>2) Although ozone oxidation of CN- took the same paths as photocatalytic reactions, but it was faster than that of photocatalytic routes. Combined use of photocatalyst and ozone for the decomposition of CN- was more efficient.<BR>3) Decomposition product of CN- with hydrogen peroxide was found as CNO- and N2. Joint use of hydrogen peroxide and photocatalyst promoted reaction of CN- to N2.
収録刊行物
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- 資源と素材
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資源と素材 122 (10/11), 489-496, 2006
一般社団法人 資源・素材学会
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詳細情報 詳細情報について
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- CRID
- 1390282681026153856
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- NII論文ID
- 10018402089
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- NII書誌ID
- AN10062646
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- ISSN
- 18806244
- 09161740
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- NDL書誌ID
- 8596091
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可