Cationically Modified PVA-Based Electrospun Nanofiber Membrane for Adsorptive PFAS Removal from Water
Md. Nahid Pervez, Tao Jiang, Boyu Li, Behnia Bitaraf, Aswin Kumar Ilango, Marina Maria Ioanniti, Caroline Schaeffer, Haralabos Efstathiadis, Mehmet V. Yigit, Yanna Liang
TL;DR
A new nanofiber membrane effectively removes harmful PFAS chemicals from water, even in complex conditions.
Contribution
A cationically modified PVA-based electrospun nanofiber membrane is developed for efficient PFAS removal.
Findings
The membrane achieved nearly 100% PFAS removal at 10 μg/L in deionized water.
Adsorption occurred rapidly (within 60 seconds) and was unaffected by pH or natural organic matter.
The membrane showed 90–100% PFAS removal effectiveness in stormwater.
Abstract
Per- and polyfluoroalkyl substances (PFAS), a diverse range of anthropogenic organic compounds, pose significant concerns to society due to their potential harmful impacts on human health and ecosystems. While there are other methods for removing PFAS from water, adsorption remains a viable and efficient option. The present research reports an adsorptive nanofiber membrane prepared through electrospinning in the presence of poly(vinyl alcohol) (PVA) and a cationic surfactant, cetyltrimethylammonium chloride (CTAC), blended solution. This modified PVA membrane was observed to achieve nearly 100% capture of all 10 target PFAS, each at 10 μg/L in deionized water. The pseudo-second-order model most accurately represented the adsorption kinetics, characterized by rapid adsorption (within 60 s). The Toth isotherm model effectively fitted the isotherm data, indicating that the adsorption of…
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Taxonomy
TopicsPer- and polyfluoroalkyl substances research · Fluoride Effects and Removal · Surface Modification and Superhydrophobicity