“Performance Test of Residu Powder Distillation from Fermentation Result Cocoa Fruits (Theobroma Cacao L.) As Adsorbent For Metal Ions (Cr3+, Fe3+, Pb2+)”. International Journal of Science Technology and health 2, no. 1 (June 28, 2025): 8–14. Accessed October 2, 2025. https://jurnal.istekaisyiyah.id/index.php/ijsth/article/view/6.