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Investigation of Filtration Performances in Eggshell Ultrafiltration Membranes with Surface Functionalized Using
Fitri Fitrilawati1,2, Gita Maulida1, Ayi Bahtiar1,2
1Department of Physics, Faculty of Mathematics and Natural Science, Universitas Padjadjaran, Jalan Raya Bandung-Sumedang Km 21 Jatinangor, Sumedang 45363, Indonesia.
ACS Omega
|January 6, 2025
Summary
Graphene oxide (GO) integrated into eggshell (ES) ultrafiltration (UF) membranes significantly reduces dye fouling. This enhancement improves membrane permeability and maintains high flow rates for wastewater treatment.
Area of Science:
- Materials Science
- Environmental Engineering
- Chemical Engineering
Background:
- Membrane fouling, particularly concentration polarization, impedes ultrafiltration (UF) efficiency in dye-laden wastewater treatment.
- Eggshell (ES) membranes offer a potential substrate, but require modification to enhance performance and anti-fouling properties.
Purpose of the Study:
- To investigate the effect of incorporating graphene oxide (GO) onto eggshell (ES) UF membranes.
- To evaluate the impact of GO concentration and applied pressure on membrane permeability, rejection efficiency, and permeate flow rate.
Main Methods:
- Eggshell membranes were modified with varying concentrations of graphene oxide (0.25, 0.5, 0.75 mg/mL) using a self-assembly method.
- The performance of the resulting ES-GO membranes was tested under applied pressures ranging from 15 to 60 psi.
- Key performance indicators, including membrane permeability, rejection efficiency, and permeate flow rate, were measured.
Main Results:
- Graphene oxide surface functionalization effectively mitigated membrane fouling and enhanced overall performance.
- Optimal results were achieved with ES-GO membranes containing 0.5 mg/mL GO at 45 psi, showing a rejection efficiency of 36.6%.
- The modified membranes demonstrated a permeability of 2.854 × 10-3 Darcy and a stable permeate flow rate of approximately 5 mL/s.
Conclusions:
- Integration of graphene oxide into eggshell membranes significantly reduces methylene blue concentration in filtration processes.
- GO acts as an effective co-host for minimizing fouling, crucial for maintaining high flux rates in UF systems.
- The developed ES-GO membranes show promise for efficient and sustainable wastewater treatment applications.
