Awalina, Mei, Ummi Meilani Fauziah Hasibuan, Delima Sari Lubis, and Aliman Syahuri Zein. 2025. “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) 6 (1):19-25. https://conferences.uinsyahada.ac.id/index.php/FEBI/article/view/160.