Optimization of Aceh Low-Rank Coal Upgrading Process with Combination of Heating Media to Reduce Water Content through Response Surface Method. International Journal of Science & Advanced Technology (IJSAT), [S. l.], v. 1, n. 1, p. 29–37, 2025. Disponível em: https://e-journal.scholar-publishing.org/index.php/ijsat/article/view/47. Acesso em: 8 sep. 2025.