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6387145 
Journal Article 
Removal of Perfluorocarboxylic Acids from Water by Anion Exchange Resins 
Sun, B; Ma, J 
2017 
0 
Shui Chu Li Ji Shu: Technology of Water Treatment
ISSN: 1000-3770 
Chinese Society of Sea Water Desalination and Water Resuse, No. 50 Wenyi West Road Hangzhou City Zhejiang Province 310012 China 
1000-3770 
43 
1 
Chinese 
Perfluorocarboxylic acids(PFCAs) with different C-F chain-length were removed by four ion exchange resins with different structures and physio chemical properties from ultrapure water and drinking water respectively. Among the resins applied in the experiments, the strong base resin B and C exhibited the most efficient removal on PFCAs from ultrapure water. When the pH and ion strength were 7.2 and 0.002 mol/L, more than 80% of the initial 500 ng/L perfluoropentanoic acid, perfluorohexanoic acid, perfluoroheptanoic acid and perfluorooctanoic acid were removed from ultrapure water, thus 75% of perfluorobutanoic acid, the most hydrophilic compound in the experiment, was removed. Due to the less hydrophilicity, removal of PFCAs with longer C-F chain length was higher than PFCAs with shorter chain length. The removal of PFCAs could be enhanced by NOM in water.Accouding to the experiments results, resin A removed 18% of initial perfluorobutanoic acid from the ultra pure water reaction system, while 70% of initial perfluorobutanoic acid was removed from drink water by resin A. 
Water Resources Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; perfluorinatedcompoumds; perfluorocarboxylic acids; ion exchange resin; Water treatment; Drinking water; Chemical Properties; Technology; Anion Exchange; Ion exchange; Hydrogen Ion Concentration; Strength; SW 0810:General; AQ 00001:Water Resources and Supplies; Q5 08503:Characteristics, behavior and fate