Research work of the dissociation of toxic organic materials in aqueous solution using hotspot generation by micro-bubble

微气泡热点发生解离水溶液中有毒有机物质的研究工作

• 批准号: 14380282
• 负责人: TAKAHASHI Masayoshi
• 金额: $ 6.98万
• 依托单位: National Institute of Advanced Industrial Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14380282/
• 关键词: Micro-bubble; Collapsing; Free-radical; Waist water treatment; Organic chemical; Electron spin resonance; Nano-bubble; Ozone; 電子線スピン共鳴法; 廃水処理; 有害化学物質

We succeed to generate a lot of free-radical, such as OH, in aqueous solution by collapsing micro-bubbles firstly in the world. Free-radical was evaluated by the method of Electron Spin Resonance with the spin trap material of DMPO. And we demonstrated that the free-radical generation by micro-bubble is several thousands times as effective as that by ultrasound.We also conducted the practical investigations of the waist water treatment and demonstrated that by using our technology most of the organic material was dissociate to carbon dioxide and water in the waist water from a fishery factory with COD more than 2000mg/L and waist water more than 200t/day. The efficiency of the process of collapsing of micro-bubble was accelerated by small amount of ozone, but the amount was less than 1/10 of the estimated volume which was required from the point of stoichiometry of the treated organic material.We finally succeed to produce the nano-bubble by the collapsing technology of micro-bubble in the aqueous solution with some amount of electrolytes. The size of nano-bubble is 100-200nm, and the bubble can be stable for more than one month. Ozone nano-bubble can be used as the strong sterilizer with small damage to environment, and oxygen nano-bubble was confirmed the physiological activation to aqueous creatures.

我们在国际上首次成功地利用微气泡的破裂在水溶液中产生了大量的OH等自由基。以DMPO为自旋捕获材料，用电子自旋共振法测定自由基。同时，我们还对某水产厂的中水进行了实际处理研究，结果表明，该工艺可将COD> 2000 mg/L、中水> 200 t/d的中水中大部分有机物分解为二氧化碳和水。少量的臭氧可以加速微气泡的破碎过程，但臭氧的加入量不到处理有机物所需体积的1/10，最终在含有一定量电解质的水溶液中成功制备出纳米级的微气泡。纳米气泡的尺寸为100- 200 nm，气泡可以稳定一个月以上。臭氧纳米气泡可作为强杀菌剂，对环境破坏小，而氧气纳米气泡已被证实对水生生物具有生理激活作用。

项目成果

高橋正好ほか: "エコテクノロジー"丸善株式会社. 215 (2004)

高桥正义等人：《生态技术》丸善株式会社 215（2004）

Masayoshi Takahashi et al.: "Raman Spectroscopi Investigation of the Phase Behavior and Phase Transitions in Ploymethyl methacrylate-Carbon Dioxide System"Journal of Polymer Science B. 41. 2214-2217 (2003)

Masayoshi Takahashi 等：“聚甲基丙烯酸甲酯-二氧化碳体系中相行为和相变的拉曼光谱研究”高分子科学杂志 B.41.2214-2217 (2003)

Masayoshi Takahashi et al.: "Kinetic Characteristic of Bubble Nucleation in Superheated Water using Fluid Inclusions"Journal of Physical Society of Japan. 71-9. 2174-2177 (2002)

Masayoshi Takahashi 等人：“利用流体包裹体研究过热水中气泡成核的动力学特征”日本物理学会杂志。

Masayoshi Takahashi et al.: "Effect of Shrinking Microbubble on Gas Hydrate Formation"Journal of Physical Chemistry B. 107-10. 2171-2173 (2003)

Masayoshi Takahashi 等人：“收缩微泡对气体水合物形成的影响”物理化学杂志 B.107-10。

Masayoshi Takahashi et al.: "Kinetic Characteristic of Bubble Nucleation in Superheated Water using Fluid Inclusions"(2002)

Masayoshi Takahashi 等人：“利用流体包裹体研究过热水中气泡成核的动力学特征”(20​​02)