TY - JOUR
T1 - Chemical aging and impacts on hydrophilic and hydrophobic polyether sulfone (PES) membrane filtration performances
AU - Fu, Wanyi
AU - Zhang, Wen
N1 - Funding Information:
This research was partially supported by the New Jersey Water Resources Research Institute (NJWRRI) Grant (Project Number: 2018NJ399B ). The authors gratefully thank Gerald Poirier (University of Delaware) for training and support on NanoIR2 instrument. The authors also thank staff support in the instrumental facilities and services in the Otto York Center at New Jersey Institute of Technology.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/10
Y1 - 2019/10
N2 - To better understand the effect of chemical aging processes on membrane filtration performance, this study assessed chemical aging of hydrophobic and hydrophilic polyether sulfone (PES) membranes via static immersion in and dynamic filtration with a sodium hypochlorite solution. After chemical aging, the membrane's physicochemical characteristics (i.e., surface porosity, roughness, surface charge and hydrophobicity, modifiers distribution) and mechanical properties (i.e., tensile strength and elongation) were holistically studied. The results indicate the aging process was dependent on the aging intensity (e.g., 1–10 days) and modes (static or dynamic). PES membranes demonstrated faster and severer degradation in dynamic filtration than in static immersion. Furthermore, AFM-IR and FTIR microscopy with IR mapping were used to analyze the distribution of modifiers on the membrane surface after the aging treatment. Finally, the membrane filtration performance was investigated with the pure water permeability and the foulant rejection.
AB - To better understand the effect of chemical aging processes on membrane filtration performance, this study assessed chemical aging of hydrophobic and hydrophilic polyether sulfone (PES) membranes via static immersion in and dynamic filtration with a sodium hypochlorite solution. After chemical aging, the membrane's physicochemical characteristics (i.e., surface porosity, roughness, surface charge and hydrophobicity, modifiers distribution) and mechanical properties (i.e., tensile strength and elongation) were holistically studied. The results indicate the aging process was dependent on the aging intensity (e.g., 1–10 days) and modes (static or dynamic). PES membranes demonstrated faster and severer degradation in dynamic filtration than in static immersion. Furthermore, AFM-IR and FTIR microscopy with IR mapping were used to analyze the distribution of modifiers on the membrane surface after the aging treatment. Finally, the membrane filtration performance was investigated with the pure water permeability and the foulant rejection.
KW - Dynamic aging mode
KW - Filtration performance
KW - Membrane aging
KW - PES membranes
KW - Static aging
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U2 - 10.1016/j.polymdegradstab.2019.108960
DO - 10.1016/j.polymdegradstab.2019.108960
M3 - Article
AN - SCOPUS:85071859836
SN - 0141-3910
VL - 168
JO - Polymer Degradation and Stability
JF - Polymer Degradation and Stability
M1 - 108960
ER -