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Abstract
This research enhances polyamide membrane desalination performance by chemically tuning the active layer using Boc-protected ethylenediamine (EDA). One EDA amino group is Boc-protected, allowing the other to participate in interfacial polymerization (IP) with meta-phenylenediamine (MPD) and trimesoyl chloride (TMC). Subsequent Boc-deprotection generates hydrophilic ammonium groups, improving desalination. The MPD-TMC-EDA-Deboc membrane (Boc-deprotected) showed 98 ± 0.5% salt rejection and 25 L m⁻² h⁻¹ permeate flux (25% increase over the control). Seawater nanofiltration showed 97% rejection and 23 L m⁻² h⁻¹ flux. Enhanced antifouling was also observed.
Publisher
npj Clean Water
Published On
Jul 25, 2024
Authors
Hilal Ahmad, Abdul Waheed, Fahad Ayesh Alharthi, Christopher Michael Fellows, Umair Baig, Isam H. Aljundi
Tags
polyamide membrane
desalination
Boc-protected ethylenediamine
interfacial polymerization
salt rejection
permeate flux
antifouling

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