Recovery of perfluorooctane sulfonate (PFOS) and perfluorooctanoate (PFOA) from dilute water solution by foam flotation
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- 作者：Yu-Chi Leea ; b ; Po-Yen Wangb ; Shang-Lien Loa ; C.P. Huangb ; huang@udel.edu" class="auth_mail" title="E-mail the corresponding author
- 关键词：Perfluorooctanoic acid ; Perfluorooctane sulfonate ; Foam separation ; Foam flotation ; Metallic activators
- 刊名：Separation and Purification Technology
- 出版年：2017
- 出版时间：1 February 2017
- 年：2017
- 卷：173
- 期：Complete
- 页码：280-285
- 全文大小：1882 K
文摘
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Metal activators enhanced the foam separation of perfluorooctanonic surfactants.
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The foam separation efficiency follow the order: Fe(III) ⩾ La(III) > Al(III) > Ca(II) > Fe(II) > K(I).
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Perfluorooctanonic surfactants had >99% removal efficiency using 11.5 mM of Fe(III) in 5 min.
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Acidic pH, e.g., 2.3 favored the foam separation of perfluorooctanonic surfactants.
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Adjusting the pH of the foamate to 7.0, ca. 84–91% of perfluorooctanonic surfactants were recovered.
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