MAJOR AND TRACE ELEMENT GEOCHEMISTRY OF THE MALKARA (TEKIRDAĞ, TURKEY) COALS

Abstract

Coal, which contains various amounts of major and trace elements, has the feature of being a mineral deposit according to the accumulation rate of certain elements. The types and quantities of inorganic components are important to the chemical, geological and technological properties of coal. If the necessary precautions were not taken during the extraction, transportation, and coal combustion, some negative effects could occur to the environment and human health. A total of 54 coal, roof, floor, and parting samples were taken from 8 boreholes in the Tekirdağ, Malkara lignite field in the Northwest of Turkey. The samples were prepared in accordance with all the procedures of mineralogical and geochemical analyses. Quartz, ankerite, pyrite, calcite, mica, aragonite, dolomite, feldspar minerals and smectite, illite, cholinite, and chlorite among clay minerals were detected out. Trace elements, including V (8-212 ppm), Co (5.3-31 ppm), Ni (0.1-257 ppm), Cu (1.5-109.6 ppm), Rb (0.2-125.8 ppm), Sr (193.8-615.3 ppm), Y (5.4-28 ppm), Zr (13.6-495.1), Ba (120-436 ppm), and W (7.1-226 ppm) are enriched. The enriched elements in the coal are largely associated with inorganic matter. However, Be, Sr and W are related to organic and inorganic substances. Due to its high concentrations, Se, Be, Cu, Mo, Ni, Pb, Th, U, V, Zn, Ba, Co, and Sn might have negative effects on the environment and human health. Therein, Be, Co, Pb, Ni, and Se are potential air pollutants in the use of coal.

Keywords

• Coal
• Enrichment Factor
• Major and Trace Element
• Malkara (Tekirdağ, Turkey)

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