Coal Characterization based on Coal Mineralogy Tests in Salopuru Village Barru District

Coal characterization based on sulfur content is an important aspect in assessing the quality and usefulness of coal for various applications. This research was conducted to study the characterization of coal based on mineralogical tests using scanning electron microscopy (SEM) and X-ray diffraction (XRD) methods, how this information can help in dealing with sulfide elements in the coal. Sulfur in coal can be found in several different chemical forms, depending on the geology and environmental conditions in which the coal was formed. The content and type of sulfur in coal can influence coal management and use strategies, especially in the context of increasingly stringent environmental regulations stipulated in the Indonesian government's Environmental Regulation No. 4 of 2014 Article 7. Characterization of sulfur is divided into low, medium and high sulfur. Mineralogical characterization of coal based on scanning electron microscopy (SEM) tests with analysis results namely Oxygen (21.79%), Sodium (0.39%), Magnesium (0.32%), Aluminum (2.78%), Silica (1.91%), Sulfur (5.78%), Potassium (1.22 %), Calcium (1.26 %), Manganese (0.51 %), Iron (64.05 %) and X-ray diffraction (XRD) with analysis results namely Oxygen (44.1 %), Silica (28.2 %), Iron (19.5%), Sulfur (6.9 %), Potassium (1.0 %), and Hydrogen (0.2 %). Therefore, the sulfur content in coal is included in the high sulfur category because the level is >3% and will affect the surrounding environment because the content exceeds the sulfur quality threshold value.