Improving the Biodegradability of Non-Biodegradable Compounds Using Photo-Fenton Reaction
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- TOKUMURA Masahiro
- Department of Environment Systems, the University of Tokyo, Japan
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- HATAYAMA Rurika
- Department of Applied Chemistry, Toyo University, Japan
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- KAWASE Yoshinori
- Department of Applied Chemistry, Toyo University, Japan
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- YANAGISAWA Yukio
- Department of Environment Systems, the University of Tokyo, Japan
抄録
The feasibility of using the photo-Fenton reaction to improve the biodegradability of non-biodegradable compounds that originated from sewage was examined. Non-biodegradable compounds are degraded by hydroxyl (OH) radicals generated by the photo-Fenton reaction. During the degradation of non-biodegradable compounds, biodegradable intermediates such as organic acids are produced, resulting in improved biodegradability. The results of an experiment, in which a filtered supernatant solution of activated sludge from a sewage treatment plant was used, confirmed that the 5-day biochemical oxygen demand (BOD5) increased with decreasing total organic carbon (TOC) concentration as a result of the photo-Fenton reaction. This increased the ratio of BOD5 to TOC, which indicated that the biodegradability was improved. Although many non-biodegradable compounds have electron-dense structures, many biodegradable compounds have electron-lucent structures. Hydroxyl radicals, which are an oxidant in the photo-Fenton reaction, act as an electrophilic agent. In the degradation experiments using a mixture of biodegradable and non-biodegradable compounds, OH radicals preferentially attacked non-biodegradable compounds, and biodegradable compounds accumulated in the solution. As a result, the biodegradability was improved.
収録刊行物
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- Journal of Water and Environment Technology
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Journal of Water and Environment Technology 11 (2), 121-130, 2013
公益社団法人 日本水環境学会
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詳細情報 詳細情報について
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- CRID
- 1390282680156251904
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- NII論文ID
- 130003363010
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- ISSN
- 13482165
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- 抄録ライセンスフラグ
- 使用不可