マイクロ・ナノバブル水の洗浄に関わる基本性能

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タイトル別名
  • Fundamental properties involved in the washing for the micro/nano-bubble water
  • マイクロ ・ ナノバブルスイ ノ センジョウ ニ カカワル キホン セイノウ

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In recent years, there is growing interest in the cleaning industry in the commercial viability of micro-bubble technologies, which exploit the characteristics of micro-bubbles of maicro-bubbles. As part of an exploration of the commercial applications of micro-bubble technology, this study examines conditions for micro/nano-bubble generation using dissolved oxygen (DO) as an indicator. We evaluated as detergency indicators the surface tension of micro/nano-bubble water and evaluated the detergency of a mixture of micro/nano-bubble water and surfactant using artificially-soiled cloths. The results indicated that micro/nano-bubble water with longer bubble generation times tended to exhibit lower and longer-lasting surface tension, thus enabling us to explain the quantitative nature of micro/nano-bubble generation. We confirmed that the combination of micro/nano-bubble water with surfactant (LAS) exhibits lower surface tension than tap water and surfactant. However, we were unable to confirm a significant increase in detergency for the former ; this may point to a need to improve our test methods. We conclude that vapor present in water as minute bubbles reduces apparent surface tension when used in combination with surfactants, an encouraging result for the potential feasibility of applying micro/nano-bubblewater technology to water-based washing systems.

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