Fabrication of β-CD Nanofiltration Membrane and Its Efficacy in PFOS Removal
ZHANG Yeming
YANG Mingjun
TIAN Li
LU Yuqing
ZHANG Yiming
YI Chongsen
KANG Lishan
Abstract：Perfluoroalkyl and polyfluoroalkyl substances(PFAS)are a"permanent chemical"that has attracted global atten-tion due to their chemical stability to humans and water resources.The separation of PFAS from water resources using membrane technology faces significant challenges.In this paper,β-cyclodextrin(β-CD)was used as an additive for blending modification,and a β-CD blend modified polyether sulfone ultrafiltration base membrane was prepared by phase transition method.Then,a β-CD modified nanofiltration membrane was prepared by interfacial polymerization method The effects of adding β-CD on the microstructure,permeability,filtration performance,hydrophilicity,surface Zeta potential,and retention performance of modified membranes for PFOS were investigated.The results showed that the addition of β-CD significantly improved the hydrophilicity,water flux,and PFOS retention rate of the modified membrane.Among them,the comprehensive performance of the modified membrane was the best when the amount of β-CD added was 3％,with a 22.8％increase in pure water flux and a high PFOS retention rate of 97.63％.This provides a new strategy for the preparation of high permeability and selective removal of PFOS nanofiltration membranes.
Keywords：perfluorooctane sulfonatenanofiltration membraneβ-cyclodextrinblending modification
Publication Date：2025-06-30
Online Publishing Date：2025-09-22(First online date of this platform, not the publication date of the document)
Pages：8( 90-97 )