AWALINA, M. .; MEILANI FAUZIAH HASIBUAN, U.; SARI LUBIS, D. .; SYAHURI ZEIN, A. Utilization of Coffee Dregs into Charcoal Briquettes as a Circular Economy Solution for Energy Sustainability. Proceedings of International Conference on Islamic Economic Finance and Social Finance (ISSN: XXXX-XXXX) (ESSN: XXXX-XXXX) , [S. l.], v. 6, n. 1, p. 19–25, 2025. Disponível em: https://conferences.uinsyahada.ac.id/index.php/FEBI/article/view/160. Acesso em: 22 jan. 2026.