Sardi, B., Nurhidayat and Safitri, N. 2020. Coal Upgrading: Desulfurization and Dehydration of Low-Rank Coal and High-Rank Coal through Blending Method. Tadulako Science and Technology Journal . 1, 1 (Dec. 2020), 18-23. DOI:https://doi.org/10.22487/sciencetech.v1i1.15292.