Adsorption Characteristics of Coals and Chars.

摘要

The report describes results of an examination of a wide range of American coals and contractor chars as regards their abilities to remove organic molecules from water and compares them with commercially-available activated carbons. Adsorption of dyes on total of 40coals varying in rank from anthracite to lignite was studied. Some uptake of dye on all coals studied could be measured. However,adsorption capacities varied widely with rank,with high volatile-C (HVC) bituminous coals generally showing greatest capacity. Rate of dye uptake by one of the more promising HVC bituminous coals was some 30times slower than that of an activated carbon over a 2-hour period. In contrast,rate of uptake of dye by the activated carbon was only about 3times more rapid than that found for a high-capacity char sample.