“PREPARATION AND CHARACTERIZATION OF ACTIVATED CARBON FROM BABUL (ACACIA ARABICA) AND COCONUT SHELLS BY PHYSICAL ACTIVATION IN A FLUIDIZED BED REACTOR”, Pakistan Journal of Scientific & Industrial Research, vol. 46, no. 1, pp. 5–9, Feb. 2003, Accessed: Mar. 10, 2026. [Online]. Available: https://www.v2.pjsir.org/index.php/biological-sciences/article/view/1582