Pemanfaatan sistem rotary biological contactor menggunakan kultur Omphalina sp yang diimobilisasi pada tandan kosong kelapa sawit untuk absorbsi logam berat Cu2+ dan Hg2+ (Utilization of rotary biological contactor system using Omphalina sp immobilized on oil palm empty fruit bunch for absorption of heavy metals Cu2+ and Hg2+). MP [Internet]. 2017 Oct. 30 [cited 2026 Aug. 27];85(2). Available from: https://mp.iribb.org/index.php/mpjurnal/article/view/255