Maharani Dewi Solikhah, Yudha Gusti Wibowo, Dedy Anwar, Amelia Andriani, Ade Pamungkas, Fatimah Tresna Pratiwi, Soni Solistia Wirawan, Siti Nurul Aisyiyah Jenie, Hendra Prasetia, Himawan Tri Bayu Murti Petrus
This study explores the development and application of alginate-cellulose-LDH-CNT hydrogel composites for efficient water removal in biofuel purification, addressing critical industry needs for effective, eco-friendly absorbents. Combining naturally derived biopolymers (alginate and cellulose) with layered double hydroxides (LDHs) and carbon nanotubes (CNTs), these composites exhibit superior water absorption, retention, flame resistance, and mechanical strength. Alginate and cellulose contribute biodegradability and hydrophilicity, while LDHs enhance stability and selective water retention through layered structures, and CNTs improve structural resilience. Compared to conventional absorbents, the hydrogel composites demonstrate high selectivity, economic efficiency, and reduced environmental impact. This composite's cost-effective production and renewable material base highlight its potential for scalable industrial application, advancing sustainable practices in biofuel purification. Future research on optimizing crosslinking and production techniques could further enhance these hydrogels, broadening their applications in biofuel and beyond. © 2025 Elsevier B.V.
Research Center for Energy Conversion and Conservation, National Research and Innovation Agency, KST BJ. Habibie, Selatan, Tangerang, Indonesia; Sustainable Mineral Processing Research Group, Department of Chemical Engineering, Universitas Gadjah Mada, Yogyakarya, 55281, Indonesia; Unconventional Geo-resources Research Center, Faculty of Engineering, UGM, Jl. Grafika No.2, Kampus UGM, Yogyakarta, 55281, Indonesia; Sustainable Mining and Environmental Research Group, Department of Mining Engineering, Institut Teknologi Sumatera, Lampung, 35365, Indonesia; Bioprocess Engineering Department, Institut Teknologi Del, Jalan Sisingamangaraja, Sitoluama, Laguboti, North Sumatera, Toba, 22381, Indonesia; Research Centre for Mineral Technology, National Research and Innovation Agency (BRIN), Jl. Ir. Sutami Km. 15, Tanjung Bintang, Lampung Selatan, Lampung, 35361, Indonesia; Research Centre for Chemistry, Indonesia Institute of Sciences, Kawasan Puspiptek, Building 452, Serpong, Selatan Banten, Tangerang, 15314, Indonesia; Center for Green and Sustainable Materials, Institut Teknologi Sumatera, Jalan Terusan Ryacudu, Way Hui, Jati Agung, Lampung Selatan, 35365, Indonesia