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http://dx.doi.org/10.4491/KSEE.2016.38.6.329

Composite Oxidizing Agents Generation Using Electrolysis of Dilute Hydrochloric Acid  

Kang, Shin-Young (Department of Environmental Engineering, Daegu University)
Park, Jong-Hun (Department of Environmental Engineering, Daegu University)
Kim, Sang-Hyoun (Department of Environmental Engineering, Daegu University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.38, no.6, 2016 , pp. 329-333 More about this Journal
Abstract
Disinfection by electrolysis would be useful for small wastewater treatment plant, combined sewer overflow, ballast water, swimming pool, and fish farming, where the transport, storage, and the use of chlorine gas is limited. This study investigated the feasibility of the electrolysis of dilute hydrochloric acid (HCl) for disinfection. The effects of HCl concentration, voltage and reaction time on the generation of oxidizing agents, HOCl, $O_3$, and $H_2O_2$, were examined in a series of batch test. The highest current efficiency was 99.3% which was found at 2.2%, 3 V, and 5 min of HCl concentration, voltage, and reaction time, respectively. Continuous electrolysis at 2.2% HCl, 3 V, and 5 min of the hydraulic retention time showed 97.4% of the current efficiency. Addition of sodium chloride up to 20 g/L linearly increased the oxidizing agents production. 92.2% of total coliforms were removed by the contact with the electrolyzed water.
Keywords
Electrolysis; Oxidizing Agent; Current Efficiency; Voltage; Dilute Hydrochloric Acid;
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Times Cited By KSCI : 1  (Citation Analysis)
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