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Abstract : <br /> <br /> <br /> The chemical and physical properties of the coal have been investigated. The coal was used in this research is from the South Sumatera (Arahan), East Kalimantan (Biu) and South Sulawesi (Lamuru). Coal is one of brown to black material produced from...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/8162 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Abstract : <br />
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The chemical and physical properties of the coal have been investigated. The coal was used in this research is from the South Sumatera (Arahan), East Kalimantan (Biu) and South Sulawesi (Lamuru). Coal is one of brown to black material produced from decomposition and sedimentation of plant, contain elements of carbon (C), oxygen (0), hydrogen (H), nitrogen (N) and sulphur (S) and its structure are aliphatic and aromatic heteropolimer. This materials are flameble and the residues of combustion contain inorganic elements such as: silicon (Si), aluminium (Al), iron (Fe), magnesium (Mg), sodium (Na), potassium (K) and titan (Ti). Commonly, the coal are important material used to energy resources for many purposes. The result of this research shows that the main element of coal are carbon. The carbon content of the coal from Arahan, Biu and Lamuru are 61,93 % , 65,08 % , 62,73 % respectively, the calori value of coal are used to be sample are 5796,65 , 6111,95 and 6274,75 calori/gram. To be energy resources, coal can made pollution are caused by sulphur and ash as a residue of combustion. The sulphur and ash content analysis shows that coal sample from Lamuru have the highest sulphur and ash content (2.70 % and 6.36 %) and the sample from Biu have the lowest one (0.12 % and 0.79 %). The determination of acidity of the sample shows that sample are acid, (pH = 4 - 5), because of any carboxylat in chemical structure of coal. This conclution is supported by infrared spectrum that shows broad peak absorption (-OH) above 3000 cm-i and sharp peak of C=0 between 1600 - 1700 cm-1. The gas chromatography analysis of fraction of sample, using several solvent yield five peak with the same time retention (tR) and with there are not any different of density and Scanning Electron Microscopy (topography) analysis of the sample. |
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