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DOI : , Vol.12, No.3, 31 ~ 44, 2004
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| Title |
| Removal of Endocrine Disruptors in Drinking Water Treatment Processes |
| 최근주 Keun Joo Choi , 김상구 Sang Goo Kim , 노재순 Jae Soon Roh , 손희종 Hee Jong Son , 권기원 Ki Won Kwon , 신판세 Pan Se Shin |
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| Abstract |
| We have studied removal efficiency of three endocrine disruptors (Amitrol, Nonylphenol, Bisphenol-A) by oxidation, coagulation and adsorption processes by activated carbon (including the used carbons). Ozonation and chlorination can oxidate nonylphenol, bisphenol-A and the more dose of powder activated carbon(PAC) the more removal efficiency. Coal Based carbon had more adsorption capacity of amitrol, nonylphenol and bisphenol-A than other two carbons on isotherm test, next was wood based carbon for nonylphenol, and coconut based carbon for bisphenol-A. Used coal and coconut based carbon had higher removal efficiency for amitrol than virgin carbon with service time. Three virgin carbons had 0-20% adsorption efficiency and the used carbons had 79-90% biodegradibility for amitrol. It was showing that hydrophilic material can be removed by biodegradation. The hydrophobic materials like as nonylphenol and bisphenol-A were effectively adsorbed onto all carbons tested in this study. The adsorption capacity reduced with the operation year, and the extent of the reduction was different depending upon the carbon type and the operation year. The adsorption parameters for nonylphenol and bisphenol-A provided by this study could be valuable when GAC adsorption was considered to handle an accidental spill of nonylphenol and bisphenol-A. |
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| Key Words |
| endocrine disruptors, amitrol, nonylphenol, bisphenol-A, used carbon. biodegradation |
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