1. The effect of contact time of adsorbent made from palm oil mill boiler ash on crude palm oil quality. Issue 3 (June 2021) Authors: Mayyoga, S; Rangkuti, I U P; Purwanto, H Journal: IOP conference series Issue: Volume 782:Issue 3(2021) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗