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http://dx.doi.org/10.4491/KSEE.2012.34.11.715

Generation of Free Chlorine Using $RuO_2$/ Ti Electrode with Various Amount of Ru  

Lee, JunCheol (Graduate School of Energy and Environment, Seoul National University of Science & Technology)
Pak, DaeWon (Graduate School of Energy and Environment, Seoul National University of Science & Technology)
Publication Information
Journal of Korean Society of Environmental Engineers / v.34, no.11, 2012 , pp. 715-719 More about this Journal
Abstract
We investigated the effects of electrochemical characteristics and generation of chlorine by the different amount of Ru coating which was prepared for $RuO_2$/Ti electrode coated with 1.5 mg, 2.5 mg, 5.5 mg, 8.5 mg Ru per unit area ($cm^2$). As a Result of the cycle voltammetry experiments, chlorine overvoltage of Ru-coated electrodes showed to be the nearly sustained value of approximately 1.15V (vs. Ag/AgCl). By contrary, According to the results of the AC impedance spectroscopy and potentiodynamic polarization tests, the amount of Ru per unit area ($cm^2$) included 2.5 mg, 3.5 mg as $RuO_2$/Ti offered the highest levels of durability which was electrode resistance and corrosion rate appeared to be $0.4582{\Omega}$, $0.5267{\Omega}$ and 0.082 mm/yr, 0.058 mm/yr, respectively. It was also observed that generation of chlorine coated with 3.5 mg per unit area ($cm^2$) was the highest value of 15.2 mg/L.
Keywords
$RuO_2$/Ti Electrode; Cyclic Votammetry; Potentiodynamic Polarization; AC Impedance Spectroscopy; Free Chlorine;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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