Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
5079967
Reference Type
Journal Article
Title
Selection of High Flux Membrane for the Effective Removal of Short-Chain Perfluorocarboxylic Acids
Author(s)
Soriano, A; Gorri, D; Urtiaga, Ane
Year
2019
Is Peer Reviewed?
Yes
Journal
Industrial and Engineering Chemistry Research
ISSN:
0888-5885
EISSN:
1520-5045
Publisher
American Chemical Society
Volume
58
Issue
8
Page Numbers
3329-3338
Language
English
DOI
10.1021/acs.iecr.8b05506
Web of Science Id
WOS:000460199800066
Abstract
Nowadays persistent perfluorohexanoic acid (PFHxA) ubiquity in the environment is a result of its increasing use as substitute of longer chain perfluorocarboxylic acids. In this study, five nanofiltration (NF270, NF90) and reverse osmosis (XLE, BW30 and SW3OXLE) membranes were analyzed in the separation of PFHxA at elevated concentrations (100 mg L-1) relevant in industrial effluents of the production of fluorinated polymers. Experiments assessed the influence of the operation pressure, pH, and ionic strength. The NF270 membrane achieved the highest permeate flux, although PFHxA rejection was typically the lowest of all membranes and was negatively affected in the acidic pH range. The NF90, XLE, and BW30 membranes achieved PFHxA observed rejections over 99%, but only NF90 and XLE membranes attained suitable water permeability. Finally, both XLE and NF90 membranes were selected to provide the lowest PFHxA concentration in the permeate (0.2 mg L-1 at 10 bar). However, when the ionic strength was further increased the electrostatic repulsion to perfluorohexanoate was weakened and the size exclusion mechanism contribution increased, thus making the membranes more permeable to PFHxA. Our results demonstrate that proper selection of NF/RO membranes is a critical issue for the design of treatments for industrial effluents containing short chain PFCAs.
Tags
PFAS
•
Expanded PFAS SEM (formerly PFAS 430)
Perfluorooctane
•
PFHxA
LitSearch Update: Feb 2018 - May 2019
WoS
Literature Search
WOS
LitSearch Update: May 2019 - May 2020
WoS
Scopus: April 2021
HAWC
•
PFOA (335-67-1) and PFOS (1763-23-1)
Literature Search Update (2013-2019)
WOS
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity