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Instruments 2018, 2(3), 13; https://doi.org/10.3390/instruments2030013

A Simple Electrostatic Device for Eliminating Tobacco Sidestream Smoke to Prevent Passive Smoking

1
Laboratory of Phytoprotection Science and Technology, Faculty of Agriculture, Kindai University, Nara 631-8505, Japan
2
Pharmaceutical Research and Technology Institute, Kindai University, Osaka 577-8502, Japan
3
Anti-Aging Centers, Kindai University, Osaka 577-8502, Japan
4
Plant Center, Institute of Advanced Technology, Kindai University, Wakayama 642-0017, Japan
5
Research Institute of Environment, Agriculture and Fisheries, Osaka 583-0862, Japan
6
T-CUBE, Earth Environmental Service Co., Ltd., Osaka 567-0085, Japan
7
Research Association of Electric Field Screen Supporters, Nara 631-8505, Japan
*
Author to whom correspondence should be addressed.
Received: 16 June 2018 / Revised: 19 July 2018 / Accepted: 20 July 2018 / Published: 22 July 2018
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Abstract

An electrostatic apparatus was constructed to capture tobacco sidestream smoke. This apparatus consisted of a perforated polypropylene plate with metal spikes and a grounded metal net arrayed in parallel at a defined interval. Spikes were negatively charged to positively polarize the net and an electric field was formed between the opposite charges of the spike tips and the grounded net. Discharge from the spike tips occurred, which depended on the pole distance and the voltage applied to the spikes. At lower voltages (<12.1 kV) that do not cause arc discharge from the tips, a corona discharge occurred with the generation of an ionic wind from the spiked plate to the net. This discharge increased in direct proportion to the applied voltage and relative humidity, while a larger corona discharge generated a stronger ionic wind. The ionic wind involved negative ions and the number of negative ions in the wind increased with increasing applied voltage. The optimal voltage (10 kV) generated sufficient negative ions to ionize smoke particles in the electric field, before the ionized smoke particles were successfully captured by the oppositely charged metal net. Thus, this study provides an experimental basis for the practical application of an electrostatic-based method to prevent the production of tobacco sidestream smoke that leads to passive smoking by non-smokers.
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Keywords: electrostatic smoke eliminator; corona discharge; ionic wind; negative ions; fine smoke particles electrostatic smoke eliminator; corona discharge; ionic wind; negative ions; fine smoke particles
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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    Link: https://www.dropbox.com/s/okl2soe8lr9g0tm/Video%201.mp4?dl=0
    Description: Trapping of tobacco smoke by the ESE. In this video, the voltage generators were switched on and off repeatedly, as indicated by the switching sound. Note that the smoke was completely prevented from passing through the ESE when a voltage of 10 kV was applied.
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Matsuda, Y.; Kakutani, K.; Nonomura, T.; Takikawa, Y.; Okada, K.; Shibao, M.; Miyama, K.; Yokoo, S.; Kusakari, S.-I.; Toyoda, H. A Simple Electrostatic Device for Eliminating Tobacco Sidestream Smoke to Prevent Passive Smoking. Instruments 2018, 2, 13.

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