2012年6月
Spongy Hydrogels of Cyanobacterial Polyanions Mediate Energy-Saving Electrolytic Metal-Refinement
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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- 巻
- 51
- 号
- 25
- 開始ページ
- 8704
- 終了ページ
- 8707
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/ie301117p
- 出版者・発行元
- AMER CHEMICAL SOC
The freeze-drying of anionic megamolecules extracted from gelatinous cyanobacteria, Aphanothece sacrum, formed spongy materials capable of metal adsorption to form hydrogels. Cryogenic-transmission electron microscopy demonstrated that thicker nanofibers were formed in sacran/In3+ complexes than in sacran/Sn4+. The preferential sorption of In3+ into the hydrogels occurred in the mixed solution of In3+ and Sn4+ with concentrations below 40 mM. Since In3+ was condensed in the sponges, electrolytic refinement of indium was made using the ion-complex hydrogels at room temperature to obtain indium metal foil at a pure grade over 99.9%. Furthermore, the sponges were recovered and used again, to successfully obtain highly pure indium metal, in even the second and third trials. Thus epochal energy-saving methods for indium refinement were established using spongy hydrogels of cyanobacterial polyanions.
- リンク情報
- ID情報
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- DOI : 10.1021/ie301117p
- ISSN : 0888-5885
- J-Global ID : 201202203268248264
- Web of Science ID : WOS:000305719500039