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Research work of the stabilizing and collapsing mechanism of nano-bubble

纳米气泡稳定与溃灭机理研究工作

基本信息

批准号：
17201028
负责人：
TAKAHASHI Masayoshi
金额：
$ 28.37万
依托单位：
National Institute of Advanced Industrial Science and Technology (AIST)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

Nano-bubble is a real new technology developed in research we have been conducting on the collapse of micro-bubbles for a new wastewater treatment method. Nano-bubbles, with diameters less than 1μm, do not ascend perceptibly and stabilize for several months in water. In addition, nano-bubbles show some intriguing properties. Both freshwater and marine fish survived simultaneously for several months in an aquarium filled with water containing oxygen nano-bubbles. Ozone nano-bubbles can be retained for several months in water and have a strong disinfecting ability, as demonstrated by the destruction of viruses inside oyster bodies. In the research we were clarifying the mechanism of stability of the tiny bubbles. Although small bubbles tend to be dissolved in the surrounding water very first, nano-bubbles can be existed for several months in the aqueous solution. As the results, the followings became clear.* The concentration of the surface electric charge (ions) was confirmed at the col … More lapsing process of the microbubble.* Free-radicals were generated at the collapsing process.* The collapsing process is a phenomenon with a temporary break, and this leads to the stabilization of the tiny gas bubble.* The stabilization of the tiny bubbles was related to the condensed electrolytes surrounding the gas-water interface of the tiny bubble.* When the nano-bubbles were generated by the forcibly collapsing process, the tiny bubble stabilized for several months in water.* For mechanism of the stabilization, a salting-out phenomenon with the ion concentration at the surface is regarded as the subject.* The stabilization of the tiny bubbles might be destroyed by the drastic change of pH of the aqueous solution. About the application of the engineering, big influence was accepted by the germination and initial growth of the seeds such as sprouts Japanese radishes by the oxygen nano bubble. The negative effect of salt for the initial growth tended to be suppressed by the tiny bobbles. By the treatment of atomization of the water containing the ozone nano-bubbles more than 80% of the ability for oxidation was still maintained, and environmental sterilization can be used as a practical application. These results were published or submitted to the science journals such as Journal of Physical Chemistry. Less

纳米气泡是一项真正的新技术，我们一直在研究微气泡的破裂，以实现一种新的废水处理方法。直径小于 1μm 的纳米气泡不会明显上升，并可在水中稳定数月。此外，纳米气泡还表现出一些有趣的特性。淡水鱼和海水鱼在充满含氧纳米气泡的水的水族箱中同时存活了几个月。臭氧纳米气泡可以在水中保留数月，具有很强的消毒能力，对牡蛎体内病毒的破坏就证明了这一点。在研究中，我们正在阐明微小气泡的稳定性机制。虽然小气泡往往首先溶解在周围的水中，但纳米气泡可以在水溶液中存在几个月。结果，以下结果变得清晰。*在微泡的塌陷过程中确认了表面电荷（离子）的浓度。*在塌陷过程中产生了自由基。*塌陷过程是一种暂时破裂的现象，这导致了微小气泡的稳定。*微小气泡的稳定与周围的冷凝电解质有关。 * 当通过强制破裂过程产生纳米气泡时，微小气泡在水中稳定了几个月。 * 对于稳定机制，以表面离子浓度的盐析现象为主题。 * 微小气泡的稳定性可能会因水溶液pH值的急剧变化而被破坏。关于该工程的应用，氧纳米气泡对发芽、萝卜等种子的发芽和初期生长产生了很大的影响。盐对初始生长的负面影响往往会被微小的气泡所抑制。含臭氧纳米气泡的水经雾化处理后，仍保持80%以上的氧化能力，可实际应用到环境消毒。这些成果发表或提交给Journal of Physical Chemistry等科学期刊。较少的