Sutarya MF, Rhakasywi D, Fahrudin F. Analysis of Biopellets from a Mixture of Coffee Grounds and Sawdust as an Alternative Energy Source: Analisis Biopelet Dari Campuran Ampas Kopi dan Serbuk Gergaji Sebagai Sumber Energi Alternatif. acopen [Internet]. 2025 Nov. 20 [cited 2025 Nov. 24];10(2):10.21070/acopen.10.2025.12889. Available from: https://acopen.umsida.ac.id/index.php/acopen/article/view/12889