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Molecules 2014, 19(11), 17424-17434; doi:10.3390/molecules191117424

Field Performance Test of an Air-Cleaner with Photocatalysis-Plasma Synergistic Reactors for Practical and Long-Term Use

1
Kanagawa Academy of Science and Technology, KSP East 407, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan
2
Photocatalysis International Research Center, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
3
PACT World Co. Ltd., Domicile 301, 1-3-1 Sugeinadazutsumi, Tama-ku, Kawasaki, Kanagawa 214-0003, Japan
4
Tanashin Denki Co. Ltd., 8-19-20 Fukasawa, Setagaya-ku, Tokyo 158-0081, Japan
5
VIX Corporation, 2-14-8 Midorigaoka, Meguro-ku, Tokyo 152-0034, Japan
*
Author to whom correspondence should be addressed.
Received: 30 August 2014 / Revised: 6 October 2014 / Accepted: 22 October 2014 / Published: 29 October 2014
(This article belongs to the Special Issue Photocatalysis)
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Abstract

A practical and long-term usable air-cleaner based on the synergy of photocatalysis and plasma treatments has been developed. A field test of the air-cleaner was carried out in an office smoking room. The results were compared to previously reported laboratory test results. Even after a treatment of 12,000 cigarettes-worth of tobacco smoke, the air-cleaner maintained high-level air-purification activity (98.9% ± 0.1% and 88% ± 1% removal of the total suspended particulate (TSP) and total volatile organic compound (TVOC) concentrations, respectively) at single-pass conditions. Although the removal ratio of TSP concentrations was 98.6% ± 0.2%, the ratio of TVOC concentrations was 43.8% after a treatment of 21,900 cigarettes-worth of tobacco smoke in the field test. These results indicate the importance of suitable maintenance of the reactors in the air-cleaner during field use. View Full-Text
Keywords: photocatalysis; plasma treatment; synergy; air-cleaner; field test; total suspended particulates; total volatile organic compounds; long-term usability photocatalysis; plasma treatment; synergy; air-cleaner; field test; total suspended particulates; total volatile organic compounds; long-term usability
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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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MDPI and ACS Style

Ochiai, T.; Ichihashi, E.; Nishida, N.; Machida, T.; Uchida, Y.; Hayashi, Y.; Morito, Y.; Fujishima, A. Field Performance Test of an Air-Cleaner with Photocatalysis-Plasma Synergistic Reactors for Practical and Long-Term Use. Molecules 2014, 19, 17424-17434.

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