Abstract
According to the rational analyses of the portions of different speciffc gravities separated from lignite, the so-called woody structure is concentrated in the portion of lower specific gravity, and the active carbon prepared from this fraction by carbonising and activating with steam, was superior in adsorption power to the carbon from the other fraction.Comparative tests were also carried out on the adsorption power, of active carbons from the woody as well as coaly lignites, and it was shown that the woody lignite, is more satisfactory than the coaly lignite.It may be concluded, therefore, that satisfactory active carbon can be made by choosing a lignite rich in the so-called woody structure.
