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Effect of Reactivation of Activated Carbon on Adsorption of Natural Organic Matter  

Hong, Seongho (숭실대학교 환경.화학공학과)
Choi, Jusol (숭실대학교 환경.화학공학과)
Publication Information
Journal of Korean Society of Water and Wastewater / v.21, no.3, 2007 , pp. 323-329 More about this Journal
Abstract
There is no certain definition about advanced drinking water treatment but it is generally known as activated carbon process, membrane process or ozone process which can remove non-conventional pollutants such as taste and odor compounds, and micro-pollutants. There are more than 20 processes related to activated carbon as adsorber or biological activated carbon in Korea. The saturated carbon by pollutants can be reused by reactivation. However, the effect of reactivation on activated carbon is not well-understood in terms of changing physical properties of carbon to adsorption capacity of natural organic matter (NOM). In this study, the effects of reactivation on physical properties of activated carbon were investigated by isotherm and breakthrough of NOM. Ash content was increased from 8% to 13.3%. Iodine number is commonly used as an indicator for performance of reactivation. The iodine number was decreased about 20% after reactivating twice. The degree of reactivation can be evaluated by not only iodine number but also apparent density.
Keywords
adsorption; GAC; reactivation; NOM;
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