Numerical Modelling and Simulation of Chemical Reactions in a Nano-Pulse Discharged Bubble for Water Treatment

HE Yuchen (何雨辰); Satoshi UEHARA; Hidemasa TAKANA; Hideya NISHIYAMA

doi:10.1088/1009-0630/18/9/09

Plasma Science and Technology > 2016 > 18(9): 924-932. > DOI: 10.1088/1009-0630/18/9/09

HE Yuchen (何雨辰), Satoshi UEHARA, Hidemasa TAKANA, Hideya NISHIYAMA. Numerical Modelling and Simulation of Chemical Reactions in a Nano-Pulse Discharged Bubble for Water Treatment[J]. Plasma Science and Technology, 2016, 18(9): 924-932. DOI: 10.1088/1009-0630/18/9/09

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Numerical Modelling and Simulation of Chemical Reactions in a Nano-Pulse Discharged Bubble for Water Treatment

1 Graduate school of Engineering, Tohoku University 6-6-01, Aza-Aoba Aramaki, Aoba, Sendai, Miyagi 980-8579, Japan 2 Institute of Fluid Science, Tohoku University 2-1-1, Katahira, Aoba, Sendai, Miyagi 980-8577, Japan

Funds: supported partially by Japan Society for the Promotion of Science (JSPS) KAKENHI (No. 26249015)

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Received Date: November 04, 2015

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Abstract

Abstract

A zero-dimensional model to simulate a nano-pulse-discharged bubble in water was developed. The model consists of gas and liquid phases corresponding to the inside and outside of the bubble, respectively. The diffusions of chemical species from the gas to the liquid phase through the bubble interface was also investigated. The initial gas is Ar, but includes a little H₂O and O₂ in the bubble. The time evolution of the OH concentration in the liquid phase was mainly investigated as an important species for water treatment. It was shown that OH was generated in the bubble and then diffused into the liquid. With the application of a continuous nano-pulse discharge, more OH radicals were generated as the frequency increased at a low voltage for a given power consumption.
- chemical reaction model,
- water purification,
- bubble discharge,
- diffusion

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