https://scholars.lib.ntu.edu.tw/handle/123456789/577017
標題: | Perfluorooctanoic acid (PFOA) removal by flotation with cationic surfactants | 作者: | Li Y.-F Chien W.-Y Liu Y.-J Lee Y.-C Lo S.-L Hu C.-Y. SHANG-LIEN LO |
關鍵字: | Biophysics; Energy efficiency; Flotation; Ionic strength; Alkyl chain; Energy efficient; Energy yields; Foam flotation; Perfluorooctanoic acid; Removal efficiencies; Water solutions; Cationic surfactants; fluorocarbon; octanoic acid derivative; perfluorooctanoic acid; surfactant; wastewater; Caprylates; Fluorocarbons; Surface-Active Agents; Waste Water | 公開日期: | 2020 | 來源出版物: | Chemosphere | 摘要: | Perfluorooctanoic acid (PFOA) was separated and recovered using a foam flotation process aided by cationic surfactants. The PFOA removal efficiency was in the following decreasing order: OTAB (C8TAB) > DTAB (C10TAB) > CTAB (C16TAB) > TBAB, which indicates that cationic surfactants with an alkyl chain that had a similar length to that of PFOA had higher affinities to PFOA. PFOA removal slightly decreased with increasing ionic strength of the surfactant but did not change with the pH. PFOA could be completely removed in 20 min with 1.25 mM of OTAB in actual wastewater. The energy yield value of foam flotation with a cationic surfactant was much higher than those of other methods, which means that using foam flotation with a cationic surfactant as the collector is a simple, fast, and energy-efficient method to separate and recover PFOA from dilute water solutions. ? 2020 Elsevier Ltd |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097440388&doi=10.1016%2fj.chemosphere.2020.128949&partnerID=40&md5=0352ffc0e6e8288fd2a57a1942dfeed4 https://scholars.lib.ntu.edu.tw/handle/123456789/577017 |
ISSN: | 456535 | DOI: | 10.1016/j.chemosphere.2020.128949 | SDG/關鍵字: | Biophysics; Energy efficiency; Flotation; Ionic strength; Alkyl chain; Energy efficient; Energy yields; Foam flotation; Perfluorooctanoic acid; Removal efficiencies; Water solutions; Cationic surfactants; fluorocarbon; octanoic acid derivative; perfluorooctanoic acid; surfactant; wastewater; Caprylates; Fluorocarbons; Surface-Active Agents; Waste Water |
顯示於: | 環境工程學研究所 |
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