Abstract
Desorption, oxidation and mechanically activated decarbonylation of coal were examined as possible sources of carbon monoxide emitted from coal during the grinding process. The effects of grinding time, temperature, coal pretreatment and coal rank on CO emission as well as adsorptive capacity of coal for carbon monoxide were investigated for 12 coal samples. Mechanical decarbonylation of coal was found to be the most probable source of CO evolved from coal in milling under inert conditions. During milling under oxygen, however, some of the CO emission originates from coal oxidation.
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