Thermally Driven Separation of Perfluoroalkyl Substances with High Efficiency
Jia Xiang1, Wenjiang Zheng1, Jie Yan1
1College of Chemistry and Engineering, Sichuan University of Science and Engineering, Zigong 643000, P R China.
Abstract:
Perfluoroalkyl substances (PFASs), such as perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), can contaminate the surface and groundwater. Common treatment strategies and adsorbents have low adsorption efficiencies and poor selectivity toward PFASs because of the extremely low surface energy of these compounds. This paper reports the use of a phenolic resin (PR) modified with perfluoroalkyl (PFA) segments and thermally sensitive poly(ethylene glycol) (PEG) segments (PR-PEG-PFA) to remove PFOA and PFOS from water. The modified PR microspheres captured >90% of PFASs and were insensitive to common anionic surfactants. By treating simulated wastewater six times with this material, the PFOA concentration in water was reduced from 1 ppm to 43 ppt (43 ng L-1), showing that PR-PEG-PFA is a promising adsorbent for PFAS separation, recovery, and recycling.
More Related Videos
06:35Implementation of a Hyperbolic Vortex Plasma Reactor for the Removal of Micropollutants in Water
Published on: July 25, 2025
12:05Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
Published on: October 10, 2013
Related Concept Videos
Supercritical Fluid Chromatography
SFC utilizes a supercritical fluid mobile phase,...
High-Performance Liquid Chromatography: Introduction
In HPLC, two phases play a critical role in the separation process:
High-Performance Liquid Chromatography: Elution Process
Optimizing Chromatographic Separations
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
Thin-Layer Chromatography (TLC): Overview
To begin the analysis, a mixture of compounds is spotted on the starting line on the TLC plate using a thin capillary. The bottom of the...
Capillary Electrophoresis: Applications
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
