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Updated: Jun 24, 2025
07:32
Synthesis of Hydrogels with Antifouling Properties As Membranes for Water Purification
Published on: April 7, 2017
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Hyperbranched polymeric membranes for industrial water purification
AmanyE Taha1, Salwa Mowafi2, Asmaa S Hamouda3
1Environmental Sciences And Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Egypt.
Heliyon
|June 13, 2024
Summary
This study developed a dual-layer nanofibrous membrane using waste materials for wastewater treatment. The functional membrane effectively removes dyes and heavy metals, demonstrating high thermal stability.
Area of Science:
- Materials Science
- Environmental Engineering
- Nanotechnology
Background:
- Wastewater treatment requires efficient methods for removing persistent pollutants like dyes and heavy metals.
- Nanofibrous membranes (NFMs) offer high surface area and porosity, making them promising for filtration applications.
- Utilizing textile waste materials in NFM fabrication aligns with circular economy principles.
Purpose of the Study:
- To prepare and characterize a dual-layer nanofibrous membrane (DLNFM) for wastewater treatment.
- To investigate the efficiency of the DLNFM in removing dye residues and heavy metal ions.
- To evaluate the impact of composite concentration and membrane thickness on filtration performance.
Main Methods:
- Electrospinning of polyacrylonitrile (PAN) to form a hydrophobic base layer.
- Electrospinning of polyamide 6 (PA)/chitosan (Ch) composite onto the PAN layer to create a hydrophilic top layer.
- Characterization using Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction, and thermogravimetric analysis.
- Wastewater treatment experiments to assess dye and heavy metal removal efficiency.
Main Results:
- The developed DLNFM successfully captured dye residues and heavy metal ions from wastewater.
- Maximum removal efficiencies of 73.4% for acid dyes and 61% for reactive dyes were achieved.
- Heavy metal ion removal reached 54%, with optimal performance at a membrane thickness of 0.08 mm and 1.25% Chitosan concentration.
- Chitosan incorporation significantly enhanced the thermal stability of the DLNFM, with a breakdown temperature of approximately 617°C.
Conclusions:
- The functional dual-layer nanofibrous membrane, fabricated from waste materials, is effective for removing dyes and heavy metals.
- The membrane's performance is influenced by chitosan concentration and thickness, with optimal parameters identified.
- The enhanced thermal stability makes the developed membrane suitable for demanding wastewater treatment applications.
Keywords:
Adsorption of dye and heavy metalChitosanDual-layer nano-fibrous membraneElectro-spinningNano-fibersPolyacrylonitrilePolyamideMore Related Videos
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