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Removal Characteristics of Tetracycline, Oxytetracycline, Trimethoprime and Caffeine in Biological Activated Carbon Process  

Son, Hee-Jong (Water Quality Institute, Busan Water Authority)
Hwang, Young-Do (Water Quality Institute, Busan Water Authority)
Yoo, Pyung-Jong (Water Quality Institute, Busan Water Authority)
Publication Information
Journal of Korean Society of Environmental Engineers / v.31, no.3, 2009 , pp. 186-192 More about this Journal
Abstract
In this study, The effects of three different activated carbon materials (each coal, coconut and wood based activated carbons), empty bed contact time (EBCT) and water temperature on the removal of pharmaceutical 4 species (oxytetracycline, tetracycline, trimethoprime and caffeine) in BAC filters were investigated. Experiments were conducted at three water temperature (5, 15 and $25^{\circ}C$) and four EBCTs (5, 10, 15 and 20 min). The results indicated that coal based BAC retained more attached bacterial biomass on the surface of the activated carbon than the other BAC, increasing EBCT or increasing water temperature increased the pharmaceutical 4 species removal in BAC columns. In the coal-based BAC columns, removal efficiencies of oxytetracycline and tetracycline were 87~100% and removal efficiencies of trimethoprime and caffeine were 72~99% for EBCT 5~20 min at $25^{\circ}C$. The kinetic analysis suggested a firstorder reaction model for pharmaceutical 4 species removal at various water temperatures (5~$25^{\circ}C$). The pseudo-first-order reaction rate constants and half-lives were also calculated for pharmaceutical 4 species removal at 5~$25^{\circ}C$. The reaction rate and half-lives of pharmaceutical 4 species ranging from 0.0360~0.3954 $min^{-1}$ and 1.75 to 19.25 min various water temperatures and EBCTs, could be used to assist water utilities in designing and operating BAC filters.
Keywords
Biological Activated Carbon; Pharmaceutical Compounds; Biodegradation; Water Temperature; Empty Bed Contact Time;
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Times Cited By KSCI : 1  (Citation Analysis)
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