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Coprecipitation of Au(III) Complex Ions with Iron(III) Hydroxide and Their Spontaneous Reduction-Application to recovery of gold from the wastes of electronic products-
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- KITAMOTO Shinichi
- Faculty of Engineering, Kyushu University
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- YONEZU Kotaro
- Faculty of Engineering, Kyushu University
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- OHASHI Hironori
- Faculty of Sciences, Kyushu University
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- MOTOMURA Yoshinobu
- Faculty of Sciences, Kyushu University
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- KOBAYASHI Yasuhiro
- Research Reactor Institute, Kyoto University
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- OKAUE Yoshihiro
- Faculty of Sciences, Kyushu University
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- MIYAZAKI Akane
- Faculty of Science, Japan Wemen’s University
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- WATANABE Koichiro
- Faculty of Engineering, Kyushu University
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- YOKOYAMA Takushi
- Faculty of Sciences, Kyushu University
Bibliographic Information
- Other Title
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- 水酸化鉄(III)共沈法による金(III)錯イオンの濃縮と自動還元―電子製品廃棄物からの金回収への適用―
- 水酸化鉄(3)共沈法による金(3)錯イオンの濃縮と自動還元--電子製品廃棄物からの金回収への適用
- スイサンカテツ 3 キョウチンホウ ニ ヨル キン 3 サクイオン ノ ノウシュク ト ジドウ カンゲン デンシ セイヒン ハイキブツ カラノ キン カイシュウ エノ テキヨウ
- Application to recovery of gold from the wastes of electronic products
- 電子製品廃棄物からの金回収への適用
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Description
For recovery of gold from wastes of electronic products, it is necessary to concentrate Au(III) complex ions from solution and to reduce them to elemental Au (Au(0)). To develop the recovery system, the coprecipitation of Au(III) complex ions with iron(III) hydroxide as a concentration procedure and their spontaneous reduction to elemental gold (Au(0)) were investigated as a function of iron concentration, pH and electrolyte concentration at ambient temperature. Most of the Au(III) complex ions were coprecipitated with iron(III) hydroxide around neutral pH, at low Cl concentration and even at low iron concentration. Under the condition, the coprecipitated Au(III) complex ions were spontaneously reduced to Au(0) even in the absence of a specific reducing agent, and 1 - 5 μm gold particles in size were formed. Finally this method was applied to recover gold from electronic devices of cellular phone.
Journal
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- Journal of MMIJ
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Journal of MMIJ 123 (8), 406-412, 2007
The Mining and Materials Processing Institute of Japan
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Details 詳細情報について
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- CRID
- 1390282680252255744
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- NII Article ID
- 10019518824
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- NII Book ID
- AA12188381
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- COI
- 1:CAS:528:DC%2BD2sXhtVSjsLfJ
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- ISSN
- 18840450
- 18816118
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- NDL BIB ID
- 8937213
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- Text Lang
- ja
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- Article Type
- journal article
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE
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- Abstract License Flag
- Disallowed