“Developing Farmers’ Business in Utilizing Coffee Skin Waste In Turekisa Village Through Biochar Production, Implementation, And Marketing for Sustainable Value Added Increase”. ABDIMAS: Jurnal Pengabdian Masyarakat 8, no. 4 (October 31, 2025): 2486–2496. Accessed January 27, 2026. https://journal.umtas.ac.id/ABDIMAS/article/view/7285.