Perfluorooctanoic acid (PFOA) removal by flotation with cationic surfactants

Yueh Feng Li; Wei Yi Chien; Yu Jung Liu; Yu Chi Lee; Shang Lien Lo; Ching Yao Hu

doi:10.1016/j.chemosphere.2020.128949

Perfluorooctanoic acid (PFOA) removal by flotation with cationic surfactants

Yueh Feng Li, Wei Yi Chien, Yu Jung Liu, Yu Chi Lee, Shang Lien Lo, Ching Yao Hu

School of Public Health

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

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.

Original language	English
Article number	128949
Pages (from-to)	128949
Journal	Chemosphere
Volume	266
DOIs	https://doi.org/10.1016/j.chemosphere.2020.128949
Publication status	Published - Mar 2021

Keywords

Cationic surfactant
Energy yield value (G)
Foam flotation process
Perfluorooctanoic acid (PFOA)

ASJC Scopus subject areas

Environmental Engineering
Environmental Chemistry
General Chemistry
Pollution
Health, Toxicology and Mutagenesis

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.chemosphere.2020.128949

Cite this

@article{b053afd4f4b840b68c4a47f02a6efbd7,

title = "Perfluorooctanoic acid (PFOA) removal by flotation with cationic surfactants",

abstract = "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.",

keywords = "Cationic surfactant, Energy yield value (G), Foam flotation process, Perfluorooctanoic acid (PFOA)",

author = "Li, {Yueh Feng} and Chien, {Wei Yi} and Liu, {Yu Jung} and Lee, {Yu Chi} and Lo, {Shang Lien} and Hu, {Ching Yao}",

note = "Funding Information: The authors would like to thank the Ministry of Science and Technology of the Republic of China for financially supporting this research (contract no. MOST 107-2221-E-038-001 ). Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.",

year = "2021",

month = mar,

doi = "10.1016/j.chemosphere.2020.128949",

language = "English",

volume = "266",

pages = "128949",

journal = "Chemosphere",

issn = "0045-6535",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Perfluorooctanoic acid (PFOA) removal by flotation with cationic surfactants

AU - Li, Yueh Feng

AU - Chien, Wei Yi

AU - Liu, Yu Jung

AU - Lee, Yu Chi

AU - Lo, Shang Lien

AU - Hu, Ching Yao

N1 - Funding Information: The authors would like to thank the Ministry of Science and Technology of the Republic of China for financially supporting this research (contract no. MOST 107-2221-E-038-001 ). Publisher Copyright: © 2020 Elsevier Ltd Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2021/3

Y1 - 2021/3

N2 - 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.

AB - 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.

KW - Cationic surfactant

KW - Energy yield value (G)

KW - Foam flotation process

KW - Perfluorooctanoic acid (PFOA)

UR - http://www.scopus.com/inward/record.url?scp=85097440388&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85097440388&partnerID=8YFLogxK

U2 - 10.1016/j.chemosphere.2020.128949

DO - 10.1016/j.chemosphere.2020.128949

M3 - Article

C2 - 33280843

AN - SCOPUS:85097440388

SN - 0045-6535

VL - 266

SP - 128949

JO - Chemosphere

JF - Chemosphere

M1 - 128949

ER -

Perfluorooctanoic acid (PFOA) removal by flotation with cationic surfactants

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this