Development of PVDF/SiO2 Mixed Matrix Membrane via Vapor-Induced Phase Separation for Membrane Fouling Control
نویسندگان
1 Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, Banda Aceh 23111, Indonesia
2 Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, Banda Aceh 23111, Indonesia
3 Research Centre for Environmental and Natural Resources Studies, Universitas Syiah Kuala, Jl. Hamzah Fansuri, No. 4, Darussalam, Banda Aceh, Indonesia
4 Graduate School of Environmental Management, Universitas Syiah Kuala, Darussalam, Banda Aceh, Indonesia
5 Laboratory of Polymer Science, Department of Chemical Engineering, Universitas of Syiah Kuala, Banda Aceh, Indonesia
6 Graduate School of Environmental Management, Universitas Syiah Kuala, Darussalam, Banda Aceh, Indonesia
7 Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, Banda Aceh 23111, Indonesia
8 Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, Banda Aceh 23111, Indonesia
doi
10.48309/jaoc.2026.563733.1372چکیده
Although mixed matrix membranes (MMMs) exhibit good fouling resistance, retaining sufficient inorganic additives during phase inversion remains a challenge. A large portion of the additive diffuses into the nonsolvent bath due to its affinity, leaving too little in the membrane matrix for optimal membrane performance. This research presents a cost-effective and facile concept for optimizing MMM development by restricting the diffusion rate of the additive to the nonsolvent through manipulation of the membrane formation mechanism. By exposing the cast film to 90 % humid air, for 20 seconds before the immersion into the nonsolvent bath (V-NIPS), the surface of the cast film slowly uptakes nonsolvent from the humid air resulting in the formation of an immobile thin layer that restricts the mobility of the additive to the nonsolvent during the cast film coagulation. Thereby, it transforms the membrane hydraulic output and the membrane fouling resistance during humic acid fouling filtration by approximately 490 % and about 61 %, respectively. By subjecting the cast film to 20 seconds before coagulation (V20), the resulting membrane recorded 37.02 ± 1.8 as water permeability, while the baseline membrane (V0) reported just 6.28 ± 0.9 as water permeability. Moreover, the results of the surface characteristic analysis justify the improvement in the SiO2 surface density in the V20 by up to approximately 18 % compared to the baseline V0. The overall results of this research demonstrate the economic potential of the V-NIPS technique in improving the antifouling performance of mixed matrix membranes as well as its sustainable applications.
