Sanusi, M. S., Kasmin, A., & Hussin, R. (2024). Characterization of Raw Kapok Fiber as Filtration Medium for  Biodiesel Plant Waste Oil. Research Progress in Mechanical and Manufacturing Engineering, 5(1), 410-418. https://publisher.uthm.edu.my/periodicals/index.php/rpmme/article/view/17006