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Sources, occurrence, and treatment techniques of per- and polyfluoroalkyl substances in aqueous matrices: A comprehensive review by Bhavini Saawarn; Byomkesh Mahanty; Subrata Hait; Sahid Hussain is a Environmental Science article available to read on EtoBox.

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Per-and polyfluoroalkyl substances (PFAS), a class of synthetic organic pollutants, have prompted concerns about their global prevalence and possible health effects. This review consolidates the most recent data on different aspects of PFAS, such as their occurrence, and prominent sources. The current literature analysis of PFAS occurrence suggests significant variation in their concentration ranging from 0.025 to 1.2 × 10 8 ng/L in wastewater, 0.01 to 8.9 × 10 5 ng/L in surface water, and 99.9% in different aqueous matrices. However, due to significant drawbacks in their applicability in wastewater treatment plants (WWTPs), a novel treatment train approach has emerged as an effective alternative. This approach synergistically integrates multiple remediation techniques while addressing the impediments of individual treatments. Furthermore, nanofiltration (NF270) combined with electrochemical degradation has been demonstrated to be the most efficient (>98%) treatment train approach in PFAS remediation. If implemented in WWTPs, nanofiltration followed by adsorption using activated carbon is also a viable method for PFAS removal.

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Author

Bhavini Saawarn; Byomkesh Mahanty; Subrata Hait; Sahid Hussain

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Environmental Science (Physical Sciences)