Removal of per- and polyfluoroalkyl substances (PFAS) from water by ceric(iv) ammonium nitrate

Jun Sun; Sreenu Jennepalli; Matthew Lee; Denis M O'Carroll; Björn Åkermark; Michael J Manefield; Biswanath Das; Naresh Kumar

doi:10.1039/d1ra02635f

Removal of per- and polyfluoroalkyl substances (PFAS) from water by ceric(iv) ammonium nitrate

RSC Adv. 2021 May 13;11(29):17642-17645. doi: 10.1039/d1ra02635f.

Authors

Jun Sun¹, Sreenu Jennepalli¹, Matthew Lee², Denis M O'Carroll², Björn Åkermark³, Michael J Manefield², Biswanath Das^{1

3}, Naresh Kumar¹

Affiliations

¹ School of Chemistry, The University of New South Wales Sydney NSW 2052 Australia n.kumar@unsw.edu.au das.biswanath85@gmail.com.
² School of Civil and Environmental Engineering, Water Research Centre, The University of New South Wales Sydney NSW 2052 Australia.
³ Department of Organic Chemistry, Stockholm University Stockholm 10691 Sweden.

Abstract

Ceric(iv) ammonium nitrate (CAN) in aqueous medium acts as an excellent precipitating agent for perfluorooctanesulfonic acid (PFOS). The Ce(iv) center plays a crucial role. Interestingly, Ce(iii) chloride showed much less effectiveness under similar conditions. The efficacy of CAN was reduced upon changing the substrate to perfluorooctanoic acid (PFOA).