| Evaluation of physical properties and adsorption capacity of regenerated granular activated carbons (GACs) |
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학술지명 Korean J. Chem. Eng
저자 채선하,김성수,박노석,정우창
발표일 2013-04-30
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The objectives of this study were to evaluate the variation in physical properties and investigate the adsorptioncapacity after regeneration of granular activated carbon (GAC). A correlation analysis was conducted to examinethe relationship between the iodide number and loss rate. The experimental results showed that the loss rate of regeneratedcarbon should be related to the usage time of GAC. Physical properties including the effective size and uniformitycoefficient were similar to those of virgin GAC. This result indicates that the function of GAC as an adsorption mediummay be recovered completely. Although the iodine number and specific surface area of the regenerated GAC were smallerthan those of virgin GAC, the cumulative pore volume of the former was larger. The removal efficiency of organicmatter from the regenerated GAC column was equal to or slightly higher than that from the virgin GAC column. Consequently,regeneration may increase the number of mesopores which are responsible for the removal of organic matter. |