Fine-grained pyrite in some Chinese coals has been investigated, with analysis by optical
microscopy and a scanning electron microscope equipped with energy dispersive X-ray …

Sedimentary organic matter concentrated in source rocks forms the main source for the
formation of hydrocarbons. Its deposition and preservation are strongly controlled by the …

Abstract The Mallawa Coal Formation in general, has a high sulfur content even though the
calorific value is quite high. Deposition environment will affect the sulfur content in coal. This …

The arsenic chemistry, mineral association and distributions in coal were evaluated using
density fraction and a low temperature ashing process. A high arsenic coal from Guizhou …

Coal that is deposited in the same depositional environment, age, and formation will usually
have the same characteristics. However, the influence of geological conditions in an area …

Apart from mercury itself, coal rank and halogen content are among the most important
factors inherent in coal that determine the proportion of mercury captured by conventional …

AbstrAct The Arahan, Banjarsari, Subanjeriji, and Banko Regions, parts of the Bukit Asam
coalfield, is situated in the Lematang Depression of South Palembang Sub-basin, South …

In general, the combustion of coal containing high sulfur and ash causes negative
environmental problems such as acid rain and the emission of oxides of sulfur. Coal flotation …

Multivariate analysis is applied to investigate geochemistry of several trace elements in top
soils and their relation with the contamination source as the influence of coal mines in …

Utilizing coal with high sulfur content can form pollutants of SOx such SO2, which can cause
corrosive acid rain. This study aims to reduce the sulfur and ash content of Mallawa's coal so …