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Removal of per- and polyfluoroalkyl substances (PFASs) from tap water using heterogeneously catalyzed ozonation

Franke, Vera and Schäfers, Miriam Dorothea and Joos Lindberg, Johan and Ahrens, Lutz (2019). Removal of per- and polyfluoroalkyl substances (PFASs) from tap water using heterogeneously catalyzed ozonation. Environmental science: water research & technology. 5 , 1887–1896
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Abstract

Drinking water is one of the most important human exposure pathways of per- and polyfluoroalkyl substances (PFASs). As conventional water treatment techniques are unable to remove PFASs efficiently, novel treatment methods for the removal of PFASs in water are urgently needed. In the present study advanced oxidation processes (AOPs) based on heterogeneously catalyzed ozonation were evaluated on laboratory- and pilot-scales for their efficiency in removing PFASs from water. Laboratory-scale ozonation experiments were conducted with different combinations of ozone, a catalyst and persulfate and showed the highest efficiency for the treatment combining all three parameters. The method was further evaluated for the treatment of spiked drinking water on the pilot-scale. The concentrations of all 18 analyzed PFASs decreased significantly within three hours of treatment in the pilot-scale set-up. The perfluorocarbon chain length had a dominant influence on the removal efficiency, where CF 7 − CF 11 PFASs were removed with more than 98% removal efficiency, independent of the functional group, CF 12 − CF 17 PFASs with 64%, and CF 4 − CF 6 with 55% on average. As the evaluated ozonation treatment is already commercially available for large scale applications today, it could easily be applied in existing water treatment trains; however, ozonation can create potentially toxic transformation products which needs to be investigated in future research.

Authors/Creators:Franke, Vera and Schäfers, Miriam Dorothea and Joos Lindberg, Johan and Ahrens, Lutz
Title:Removal of per- and polyfluoroalkyl substances (PFASs) from tap water using heterogeneously catalyzed ozonation
Year of publishing :2019
Volume:5
Page range:1887–1896
Number of Pages:10
Publisher:The Royal Society of Chemistry
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 104 Chemical Sciences > Analytical Chemistry
(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
(A) Swedish standard research categories 2011 > 2 Engineering and Technology > 204 Chemical Engineering
Keywords:drinking water, tap water, per- and polyfluoroalkyl substances (PFASs), removal, treatment methods, advanced oxidation processes (AOPs), ozonation
URN:NBN:urn:nbn:se:slu:epsilon-p-102306
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-102306
Additional ID:
Type of IDID
DOI10.1039/c9ew00339h
ID Code:16541
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:06 Feb 2020 09:44
Metadata Last Modified:06 Feb 2020 09:44

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