Abstract
The physical structure and adsorption properties of coal washery reject were investigated, in order to prepare from this material an economical sorbent for SO
2 and NO
x
removal. Chemical composition, ash yield and particle size were examined in relation to their effects on the surface area and pore structure of the coal reject and its chars. The adsorption tests showed that there is an optimal micropore structure in the activated chars which allows maximum adsorption capacities for NO
x
and SO
2.