EFISIENSI ADSORPSI LOGAM Cu MENGGUNAKAN KOMPOSIT Fe3O4 /KITOSAN/SiO2 SEKAM PADI. SNPPM [Internet]. 2021 Dec. 24 [cited 2026 Apr. 12];5:181-4. Available from: https://journal.ubb.ac.id/index.php/snppm/article/view/2745