Effect of Activation Temperature on Characteristics of Activated Carbon from Pruned Apple Branches

Effects of activation temperature on yield, ash content, specific surface area and moisture absorption of activated carbon made from pruned apple branches with an air-based activation method were investigated, and these characteristics were compared with activated carbon from Cryptomeria japonica. The results are as follows: The yield at activation temperature of 900°C from pruned apple branches was lowest, and was lower than that of Cryptomeria japonica, while the ash yield was higher than that of Cryptomeria japonica. The specific surface area at activation temperature of 900°C from pruned apple branches was highest, and based on converted ash yield was higher than that of Cryptomeria japonica. Moisture adsorption of activated carbon from pruned apple branches increased with rising relative humidity and activation temperature, and based on converted ash yield was higher than that of Cryptomeria japonica.