Decomposition of Oxalic Acid by O<sub>3</sub>/H<sub>2</sub>O<sub>2</sub> Advanced Oxidation Process
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- HAMASAKI Tatsuhide
- Osaka Sangyo University
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- JIE Xu
- Osaka Sangyo University
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- CHEN Yunqi
- Osaka Sangyo University
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- MIZUNO Tadao
- Kyoto University
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- TSUNO Hiroshi
- Osaka Sangyo University
Bibliographic Information
- Other Title
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- <b>オゾン/過酸化水素促進酸化法によるシュウ酸の</b><b>分解 </b>
- オゾン/過酸化水素促進酸化法によるシュウ酸の分解
- オゾン/カサンカスイソ ソクシン サンカホウ ニ ヨル シュウサン ノ ブンカイ
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Abstract
<p>An O3/H2O2 advanced oxidation process was experimentally examined for leaching radioactive cesium from contaminated sewage sludge since the excessive oxalic acid from the conventional method of coprecipitation with ferrocyanide complex salts disturbs the process of radioactive cesium removal. The most suitable condition for leaching radioactive cesium was a pH of 3,which subsequently mineralized the oxalic acid effectively. According to this study, 30 ㎎/L of hydrogen peroxide was an appropriate concentration. TOC was reduced from 100 ㎎/L to 40 ㎎/L within 40 minutes. The ozone requirement per TOC removal was 1.9 ㎎ O3/㎎ C. Therefore, it proved that one molecule of ozone was needed to mineralize one molecule of oxalic acid. Oxalic acid was effectively decomposed at a pH of 3. Therefore, an O3/H2O2 advanced oxidation process using a multistage reactor with 30 ㎎/L of hydrogen peroxide was recommended.</p>
Journal
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- Journal of Environmental Conservation Engineering
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Journal of Environmental Conservation Engineering 46 (8), 430-440, 2017
Society of Environmental Conservation Engineering
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Details 詳細情報について
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- CRID
- 1390001204593476352
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- NII Article ID
- 130006078449
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- NII Book ID
- AN00046213
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- ISSN
- 18828590
- 03889459
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- NDL BIB ID
- 028485839
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed