Effect of Surface Property of Activated Carbon on Adsorption of Nitrate Ion
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- Iida Tatsuya
- Graduate School of Engineering, Chiba University
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- Amano Yoshimasa
- Graduate School of Engineering, Chiba University Safety and Health Organization, Chiba University
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- Machida Motoi
- Graduate School of Engineering, Chiba University Safety and Health Organization, Chiba University
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- Imazeki Fumio
- Safety and Health Organization, Chiba University
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抄録
In this study, the removal of acidic functional groups and introduction of basic groups/sites on activated carbons (ACs) by outgassing and ammonia gas treatment were respectively carried out to enhance the nitrate ion adsorption in aqueous solution. Then, the relationships between nitrate ion adsorption and solution pH as well as surface charge of AC were investigated to understand the basic mechanisms of nitrate ion adsorption by AC. The result showed that the nitrate ion adsorption depended on the equilibrium solution pH (pHe) and the adsorption amount was promoted with decreasing pHe. The ACs treated by outgassing and ammonia gas treatment showed larger amount of nitrate ion adsorption than that by untreated AC. These results indicated that, since basic groups/sites could adsorb protons in the solution, the AC surface would be charged positively, and that the nitrate ion would be electrically interacted with positively charged carbon surface. Accordingly, it was concluded that basic groups/sites on the surface of AC could promote nitrate ion adsorption.
収録刊行物
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- CHEMICAL & PHARMACEUTICAL BULLETIN
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CHEMICAL & PHARMACEUTICAL BULLETIN 61 (11), 1173-1177, 2013
公益社団法人 日本薬学会
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詳細情報 詳細情報について
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- CRID
- 1390001204179014912
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- NII論文ID
- 130003381777
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- NII書誌ID
- AA00602100
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- COI
- 1:STN:280:DC%2BC2c7ivFyisw%3D%3D
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- ISSN
- 13475223
- 00092363
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- NDL書誌ID
- 024957222
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- PubMed
- 24189304
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可