Development of Photocatalytic Water Treatment Device for Accelerating Reaction Rate

加快反应速度的光催化水处理装置的开发

• 批准号: 14205078
• 负责人: OHGAKI Shinichiro
• 金额: $ 28.79万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14205078/
• 关键词: Photocatalvsis; Water treatment; Algae; Visible light photocatalvsis; Light wave length; Photosynthesis; Bromate; 二酸化チタン; 臭素酸イオン; 還元反応; Langmuir-Hinshelwood式; 化学量論; 反応速度; 光触媒担持膜; 共存物質; 高度酸化水処理; フェノール; メチレンブルー; ゼータ電位; ラジカル生成

A photocatalytic reaction device was developed using a glass fiber filter coated with titanium dioxide powder commercially available. This device showed a higher performance than other previously developed photocatalytic device for water treatment in terms of reaction rate per unit light soucrce.Bromate ion and phenol was used as a model substances for reduction and oxidation, respectively. This device was analyzed in a continuous constant flow state, using a black light lump as the light source. Reaction rate both of phenol and bromate was explained using a newly developed model following the Langmuir-Hinshelwood equation, including surface reaction, competition with other substances and adsorption, as well as reduction and oxidation.Photocatalysis were also successfully used for suppress of algal growth coated on a transparent wall, probably because photosynthesis provided oxygen used in a photocatalytic reaction.Inactivation by UV radiation as well as the advance effect of photocatalytic reaction was studied. Decomposition of nucleic acids of bacteriophage was determined using RT-PCR. UV radiation did decompose the nucleic acids, while photocatalytic reaction did not enhance decomposition so much.

使用市售的涂覆有二氧化钛粉末的玻璃纤维过滤器开发了光催化反应装置。以溴酸根离子和苯酚分别作为还原和氧化的模型物质，该装置在单位光源反应速率方面表现出比以往开发的光催化水处理装置更高的性能。在连续恒流状态下分析该装置，使用黑光块作为光源。采用Langmuir-Hinshelwood方程解释了苯酚和溴酸盐的反应速率，包括表面反应、与其他物质的竞争和吸附以及还原和氧化，并成功地将光催化剂用于抑制透明壁上的藻类生长。可能是由于光合作用提供了光催化反应所需的氧气，本文研究了紫外线对光催化反应的钝化作用以及光催化反应的促进作用。用RT-PCR法测定噬菌体核酸的降解情况。紫外线辐射确实分解了核酸，而光催化反应并没有那么多地促进分解。

项目成果

Spectral impact of inactivating light on photoreactivation of Escherichia coli

灭活光对大肠杆菌光复活的光谱影响

• 发表时间: 2005
• 期刊: Journal of Environmental Engineering and Science 4・Suppl.1
• 作者: Oguma;K.;H.Katayama;S.Ohgaki
• 通讯作者: S.Ohgaki

膜光触媒による藻類及び光合成細菌付着の抑制に及ぼす透過光の影響

透射光对膜光催化剂抑制藻类和光合细菌粘附的影响

• 发表时间: 2003
• 期刊: 環境工学研究論文集 40
• 作者: 洪静蘭;大瀧雅寛
• 通讯作者: 大瀧雅寛

洪静蘭, 大瀧雅寛: "膜光触媒による藻類及び光合成細菌付着の抑制に及ぼす透過光の影響"環境工学研究論文集. 40. 573-578 (2003)

洪景然，大泷正宏：“膜光催化剂透射光对抑制藻类和光合细菌粘附的影响”环境工程研究杂志40. 573-578（2003）。

Photoreactivation of Legionella pneumophila after inactivation by low- or medium-pressure ultraviolet lamp.

• DOI: 10.1016/j.watres.2004.03.024
• 发表时间: 2004-06
• 期刊: Water research
• 影响因子: 12.8
• 作者: K. Oguma;H. Katayama;S. Ohgaki

Role of Nutrients in Producing the Growth Inhibitory Effect on Bacteria in UV-irradiated Water

营养物质对紫外线照射水中细菌产生生长抑制作用的作用

• 发表时间: 2003
• 期刊: Environmental Engineering Research(in Japanese) 40
• 作者: Sakai H.;H.Katayama;S.Ohgaki
• 通讯作者: S.Ohgaki