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What is coal?
Coal is a readily combustible rock containing more than 50 percent organic matter (carbon) by weight and 70 percent carbonaceous material by volume.
How is coal formed?
Coal is formed from the physical and chemical alteration of peat, which accumulates in wetlands and undergoes peatification.
What are the types of coal based on coalification?
The types of coal are classified into Anthracite, Bituminous, Subbituminous, and Lignite.
What constitutes the carbon cycle involving coal?
Coal and the peat it comes from are part of the carbon cycle involving processes such as photosynthesis, decay, and respiration.
What are the organic components found in coal?
Coal contains organic components such as plant parts including roots, bark, stems, spores, and leaves.
What is the primary use of coal in the Philippines?
Coal is the main source of electricity in the Philippines.
What is the ash yield in coal analysis?
Ash yield measures how much material remains after coal combustion and indicates the amount of ash residue.
What does proximate analysis measure in coal?
Proximate analysis measures moisture content, volatile matter, fixed carbon, and ash in coal.
What is the calorific value of coal?
Calorific value is a measure of the amount of energy produced from coal when combusted in oxygen.
What does ultimate analysis measure in coal?
Ultimate analysis measures the weight percent of carbon, hydrogen, nitrogen, sulfur, and ash in the coal.
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