A Physico-Chemical Study of Wood Charcoal from a Cinder Block Kiln

The small producer cannot usually afford the expense of investing in equipment for activating his charcoal and must find a market for inactivated charcoal produced in kilns. This report covers work done on charcoals produced in cinder kilns in Georgia with oak wood and in Wisconsin with sugar maple wood without activation. Compared to commercially activated charcoal, these charcoal samples showed a relative efficiency of from 11 to 21 percent in their ability to absorb iodine from solution. In order of decreasing efficiency were oak, sugar maple, hardwood, and pine. These charcoal samples adsorbed a greater weight per gram of charcoal of acids from solution than they did bases.

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