Effect of Separation of Ozonation and Electrolysis on Effective Use of Ozone in Ozone-Electrolysis Process |
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Authors: | Naoyuki Kishimoto Takahiro Nakagawa Hirokazu Okada Hiroshi Mizutani |
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Affiliation: | 1. Faculty of Science and Technology , Ryukoku University , Otsu, 520-2194, Japan;2. OPTEX Co., Ltd. , Ogoto, Otsu, 520-0101, Japan;3. Mitsubishi Heavy Industries Environmental &4. Chemical Engineering Co. Ltd. , Yokohama, 220-0012, Japan |
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Abstract: | For improving the ozone consumption efficiency (OCE) of the ozone-electrolysis process, an ozone-electrolysis system with an independent electrolytic cell from an ozone contactor (indirect ozone injection system) and a three-dimensional electrode were introduced in this study. The reactor successfully enhanced the OCE and the ratio of 1,4-dioxane degradation rate to ozone injection rate (RDO) in comparison with the previous reactor. The three-dimensional electrode also contributed the improvement of the OCE and the RDO due to lowering the current density on the cathode. As the indirect ozone injection system allows higher degree of freedom for the reactor design, it is useful for application of ozone-electrolysis to practical water treatments. |
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Keywords: | Ozone Electrolysis Reactor design Efficiency Advanced oxidation |
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