Afrillia Fahrina, Kajornsak Faungnawakij, Fahrurrozi Fahrurrozi, Apri I. Supii, Sri Mulyati, Nasrul Arahman, Yusuf Wibisono, Muhammad Roil Bilad
The development of tannic acid (TA) and Fe3+ modified cellulose acetate (CA) membranes offers a promising approach to improving filtration performance in bioresource applications, particularly for microalgae harvesting. This study aimed to evaluate the effects of TA/Fe3+ coatings on the antifouling properties, permeability, and filtration efficiency of CA membranes. Using a layer-by-layer assembly method, single and multi-layer coatings were applied and analyzed. Results demonstrated that single-layer coatings achieved optimal permeability and fouling resistance, with flux recovery ratios of up to 98 %, while multi-layer coatings reduced the membrane water flux. The incorporation of TA/Fe3+ complexes improved hydrophilicity and introduced electrostatic repulsion, significantly reducing fouling by algal cells and extracellular organic matter. These findings underscore the potential of TA/Fe3+ coatings in creating efficient, scalable, and sustainable membrane solutions for bioresource management. Future research should explore the long-term stability and broader applications of these coatings in diverse filtration systems. © 2025 Elsevier Ltd
Research Center for Marine and Land Bioindustry, National Research and Innovation Agency (BRIN), North Lombok, 83756, Indonesia; Nanomaterials for Energy and Catalysis Laboratory, National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand; Department of Chemical Engineering, Universitas Syiah Kuala, Jl. Syeh A. Rauf, No. 7, Banda Aceh, 23111, Indonesia; Department of Bioprocess Engineering, Universitas Brawijaya, Jl. Veteran, Malang, 65145, Indonesia; Faculty of Integrated Technologies, Universiti Brunei Darussalam, BE, Gadong, 1410, Brunei Darussalam
