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The Treatment of LNAPL(BETXlMTBE) Contaminated Groundwater Applying Photo-assisted Fenton Reaction with Various Fe(III) Chelator  

Park, Jong-Hun (Department of Chemical Engineering, Hanyang University)
Do, Si-Hyun (Department of Chemical Engineering, Hanyang University)
Lee, Hong-Kyun (Department of Chemical Engineering, Hanyang University)
Jo, Young-Hoon (Department of Chemical Engineering, Hanyang University)
Kong, Sung-Ho (Department of Chemical Engineering, Hanyang University)
Publication Information
Journal of Soil and Groundwater Environment / v.14, no.2, 2009 , pp. 26-32 More about this Journal
Abstract
In this study, the degradation of BTEX (benzene, toluene, ethylbenzene, xylene) was tested in both (Fe$^{3+}$+chelating agent)/H$_2$O$_2$system [Fe(III) 1 mM, oxalate 6 mM, H$_2$O$_2$ 3%, and pH 6] and UV/(Fe3++ chelating agent)lHzOz system [UV dose 17.4 kWhlL, Fe(III) 1mM, oxalate 6 mM,H$_2$O$_2$ 1%, and pH 6]. The types of chelating agents used in experiments were catechol, NTA, gallic, acetyl acetone, succinic, acetate, EDTA, citrate, malonate, and oxalate and the optimum chelating agent for BTEX degradation was determined. The results showed that acetate was the optimum chelating agent for BTEX degradation in both (Fe$^{3+}$+chelating agent)/H$_2$O$_2$ and UV/(Fe$^{3+}$+chelating agent)/H$_2$O$_2$ system, and UV radiation enhanced the degradation of BTEX with any types of chelating agents. Moreover, UV/(Fe$^{3+}$+chelating agent)/H$_2$O$_2$ system, which chelating agent was acetate, removed effectively mixtures of BTEX and MTBE (methyl tert-butyl ether) when the concentration of both BTEX and MTBE was 200 mg/L, respectively. In this system, BTEX was degraded completely and 85% of MTBE was degraded at the reaction time of 180 min. Therefore, UV/((Fe$^{3+}$+chelating agent)/H$_2$O$_2$ system with acetate as a chelating agent removed not only BTEX but also BTEX and MTBE, effectively.
Keywords
BTEX; MTBE; Chelating agents; UV/((Fe$^{3+}$+chelating agent)/H$_2$O$_2$ system;
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Times Cited By KSCI : 1  (Citation Analysis)
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