Articles & Issues
- Language
- English
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
- Publication history
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Received January 23, 2025
Accepted April 20, 2025
Available online June 25, 2025
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
All issues
Bio-inspired Fabrication of SLS-MWCNTs Multifunctional Composite Membrane with Bionic Coating for Effi cient Separation of Complex Oily Wastewater
https://doi.org/10.1007/s11814-025-00471-8
Abstract
Industrial development has led to the generation of large amounts of oily wastewater, which poses signifi cant threats to both
environment and human health. These wastewater streams often contain various pollutants, such as organic dyes and heavy
metal ions, creating an urgent need for multifunctional materials capable of effi ciently separating these contaminants. In this
study, we deposited sodium lignosulfonate (SLS)-modifi ed multi-walled carbon nanotubes (MWCNTs) onto polyvinylidene
fl uoride (PVDF) polymer membranes by vacuum fi ltration. Subsequently, a hydrophilic bio-inspired coating, consisting of
pyrogallic acid (PG) and silane-coupling agent (KH550), was deposited on the membrane surface. The resulting composite
membrane exhibited exceptional superhydrophilicity and underwater superoleophobicity. This membrane demonstrated high
effi ciency in separating various oil–water emulsions, with a separation effi ciency reaching 99% and a stable separation fl ux
maintained above 350 L m
