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http://dx.doi.org/10.5322/JESI.2013.22.8.999

Electrochemical Degradation of Phenol Using Dimensionally Stable Anode  

Kim, Dong-Seog (Department of Environmental Science, Catholic University of Daegu)
Park, Young-Seek (Faculty of Liberal Education, Daegu University)
Publication Information
Journal of Environmental Science International / v.22, no.8, 2013 , pp. 999-1007 More about this Journal
Abstract
Electrochemical degradation of phenol was evaluated at DSA (dimensionally stable anode), JP202 (Ru, 25%; Ir, 25%; other, 50%) electrode for being a treatment method in non-biodegradable organic compounds such as phenol. Experiments were conducted to examine the effects of applied current (1.0~4.0 A), electrolyte type (NaCl, KCl, $Na_2SO_4$, $H_2SO_4$) and concentration (0.5~3.0 g/L), initial phenol concentration (12.5~100.0 mg/L) on phenol degradation and $UV_{254}$ absorbance as indirect indicator of by-product degraded phenol. It was found that phenol concentration decreased from around 50 mg/L to zero after 10 min of electrolysis with 2.5 g/L NaCl as supporting electrolyte at the current of 3.5 A. Although phenol could be completely electrochemical degraded by JP202 anode, the degradation of phenol COD was required oxidation time over 60 min due to the generation of by-products. $UV_{254}$ absorbance can see the impact of as an indirect indicator of the creation and destruction of by-product. The initial removal rate of phenol is 5.63 times faster than the initial COD removal rate.
Keywords
Electrochemical process; Phenol degradation; $UV_{254}$; Electrolyte; Dimensionally stable anode;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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