Aladin, A. et al. 2025. Optimization of Halal Bioadsorbent Particle Size from Pyrolysis Products of Coconut Trunk Sawdust for the Purification of Virgin Coconut Oil (VCO). Journal of Green Chemical and Environmental Engineering. 1, 4 (Dec. 2025), 210–220. DOI:https://doi.org/10.63288/jgcee.v1i4.17.