M. S. Reza, A. K. . Hasan, S. . Afroze, M. S. A. . Bakar, J. . Taweekun, and A. K. . Azad, “Analysis on Preparation, Application, and Recycling of Activated Carbon to Aid in COVID-19 Protection”, IJIE, vol. 12, no. 5, pp. 233–244, Jun. 2020, Accessed: Mar. 12, 2026. [Online]. Available: https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/6380