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KMID : 1024520070160091091
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Journal of the Environmental Sciences
2007 Volume.16 No. 9 p.1091 ~ p.1098
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Preparation of Activated Carbon from Waste Citrus Peels by ZnCl₂
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Kang Kyung-Ho
Kam Sang-Kyu
Lee Min-Gyu
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Abstract
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Activated carbon was prepared from waste citrus peels by chemical activation with . The optimal condition of carbonization was at for 1.5 hr. Activation experiments with carbonized samples prepared at optimal carboniztion condition were carried out under various conditions such as activation temperature of 400 to , activation time of 0.5 to 2.0 hr, and ratio of 100 to 300%. In order to investigate the physical properties of the activated carbons prepared, iodine adsorptivities and specific surface areas were measured and their morphologies were observed from scanning electron microscopy. As ratio increased, activation yield decreased, while iodine adsorptivity and specific surface area increased. The optimal condition of activation was at 300% ratio and for 1.5 hr, and then iodine adsorptivity and specific surface area was measured as about 862 mg/g and , respectively. SEM photography showed that the surface morphology was changed and many active pore were produced by chemical activation.
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KEYWORD
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Chemical activation, Agricultural waste, Citrus peel, Activated carbon
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