Adsorption Properties of Organic Compounds with Different Molecular Sizes on Activated Carbons with Different Pore Diameters
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概要
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Activated carbons (ACs) ware prepared from bamboo with ZnCl2 activation and the influences of specific surface area and pore size distribution on the adsorption of dyes such as 2-naphthol (2-N, MW: 144), methylene blue (MB, MW: 320) and congo red (CR, MW: 697) were investigated using each prepared AC. Activated carbons with different mesopore volumes and same surface chemistry could be prepared by ZnCl2 activation. Especially, the sample activated with the ZnCl2/BC mass ratio of 6 (Z6) showed remarkable developments of both specific surface area and mesopore volume exhibiting as high as 2050 m2/g and 1.1 cm3/g, respectively. In the result of each adsorption experiment, it was revealed that MB and CR were adsorbed on mesoporous AC more efficiently than microporous AC, and none of the CR adsorption onto microporous AC was observed, whereas the adsorption amount of small molecular size of 2-N was dependent on the specific surface area rather than mesopore volume.
著者
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Amano Yoshimasa
Graduate School Of Engineering Chiba University
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OISHI Shohei
Graduate School of Engineering, Chiba University
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MACHIDA Motoi
Safety and Health Organization, Chiba University
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