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Decontamination of metal-contaminated waste foundry sands using an EDTA-NaOH-NH3 washing solution
http://hdl.handle.net/2297/45549
http://hdl.handle.net/2297/45549fb066909-c4cf-4e1d-b5f4-fb7ef39073b1
名前 / ファイル | ライセンス | アクション |
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SC-PR-SAWAI-H-199.pdf (760.9 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2017-12-05 | |||||
タイトル | ||||||
タイトル | Decontamination of metal-contaminated waste foundry sands using an EDTA-NaOH-NH3 washing solution | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Sawai, Hikaru
× Sawai, Hikaru× Rahman, Ismail M.M.× Fujita, Mayuko× Jii, Naoyuki× Wakabayashi, Tomoya× Begum, Zinnat A.× Maki, Teruya× Mizutani, Satoshi× Hasegawa, Hiroshi |
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書誌情報 |
Chemical Engineering Journal 巻 296, p. 199-208, 発行日 2016-07-15 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1385-8947 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11095026 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.cej.2016.03.078 | |||||
出版者 | ||||||
出版者 | Elsevier | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Waste foundry sand (WFS), which is a hazardous byproduct from the foundry industry, is often contaminated with potentially toxic elements (PTEs), such as Cu, Pb and Zn, and widely re-utilized as a construction material. Therefore, the depollution of WFS has been suggested due to its environment friendly reprocessing to avoid potential long-term hazardous impacts. In the current study, a unique chemically induced technique has been proposed for the removal of PTEs from WFS. EDTA, NaOH and NH3 were used as extractants in combination or in succession. The optimum removal of PTEs was accomplished using a solid (WFS) to solution (50 mmol L-1 EDTA) ratio of 10 under strongly basic pH conditions, which was achieved with NaOH addition. The washing efficiency was further enhanced with the addition of NH3 to the solution. The complete process cycle duration was adjusted to 9 h with a washing sequence that was repeated three times for 3 h each. The ultimate efficiencies (%) for the removal of PTEs were as follows: Cu, 98; Pb, 81; Sn, 83; and Zn, 50. The leaching of residual PTEs (%) from the decontaminated WFS was also in compliance with the regulatory levels that are defined by the monitoring authorities. © 2016 Elsevier B.V. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Embargo Period 24 months | |||||
権利 | ||||||
権利情報 | Copyright © Elsevier(CC-BY NC ND) | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://www.elsevier.com/locate/issn/13858947 |