Cationic polymer for selective removal of GenX and short-chain PFAS from surface waters and wastewaters at ng/L levels
Ateia, M; Arifuzzaman, M; Pellizzeri, S; Attia, MF; Tharayil, N; Anker, JN; Karanfil, T
HERO ID
5381312
Reference Type
Journal Article
Year
2019
Language
English
PMID
| HERO ID | 5381312 |
|---|---|
| In Press | No |
| Year | 2019 |
| Title | Cationic polymer for selective removal of GenX and short-chain PFAS from surface waters and wastewaters at ng/L levels |
| Authors | Ateia, M; Arifuzzaman, M; Pellizzeri, S; Attia, MF; Tharayil, N; Anker, JN; Karanfil, T |
| Journal | Water Research |
| Volume | 163 |
| Page Numbers | 114874 |
| Abstract | The emerging classes of perfluorinated alkyl substances (PFAS) (e.g., Perfluorobutanoic acid (PFBA), perfluorobutane sulfonic acid (PFBS), GenX, ADONA, and F-53B) are persistent and recalcitrant to removal by conventional treatment techniques. Herein, we report on poly (N-[3-(dimethylamino)propyl]acrylamide, methyl chloride quaternary, DMAPAA-Q) hydrogel matrix as an effective sorbent for sequestering PFAS from different water matrices. The selective removal of 16 PFAS from different classes using DMAPAA-Q polymer was confirmed in surface waters and treated wastewater at environmentally relevant concentration (i.e., <1000 ng/L). The results showed fast removal kinetics with equilibrium time of 60-120 min and a higher removal of sulfonated than carboxylic PFAS, regardless of their chain lengths. These observations were in agreement with adsorption energy calculations of short- and long-chain PFAS on poly DMAPAA-Q hydrogel using density functional theory (DFT). No desorption was observed when the experimental time was extended to 24 h, which gives an added advantage of poly DMAPAA-Q hydrogel over previously reported adsorbents in the literature. In addition, the removal efficiency was not affected under a varying pH range of 4-10. The impact of background anions on PFAS removal by poly DMAPAA-Q hydrogel was tested and found to follow an order of SO42- > Cl- > NO3-. The performance of poly DMAPAA-Q hydrogel was maintained in six consecutive adsorption/regeneration cycles to remove PFAS. The unique fast kinetics and high adsorption activity of poly DMAPAA-Q hydrogel towards PFAS exhibits a great potential for being a promising material for PFAS control. |
| Doi | 10.1016/j.watres.2019.114874 |
| Pmid | 31336210 |
| Wosid | WOS:000483006400022 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |
| Keyword | Short-chain PFAS; GenX; Selective removal; Cationic polymer; Density functional theory |