Influence of organic modifying additives on qualitative indicators of peat activated coal

The Institute of Nature Management of the National Academy of Sciences of Belarus conducted extensive research on the production of activated carbons for various purposes from peat, which showed that in order to obtain high-quality coals, it is necessary to use high-moor peat of a high degree of decomposition. In order to expand the resource base, it was of interest to explore the possibility of obtaining coal from peat with a lower degree of decomposition.

Peat samples modified by products and residual products of oil refining and hardwood sawdust in granular form were obtained. An assessment of the physico-technical and sorption properties of the obtained granules was carried out. The compositions of peat with hydrocarbon additives were also studied by thermal analysis.

Activated carbons based on compositions of peat, sawdust and some hydrocarbon wastes of petrochemical synthesis have been obtained, and their sorption and strength properties have been studied. It has been established that the use of hydrocarbon modifiers makes it possible to increase the adsorption activity of coals by 20–50 %. The introduction of sawdust into peat also increases the adsorption activity by 13–55 %, depending on the amount of additive introduced, while the strength properties and bulk density decrease in comparison with peat activated carbon.

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