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Lee Jae – One of the best experts on this subject based on the ideXlab platform.

  • Analysis of Yellow Sand Dust and Performance Evaluation of Plasma Air Cleaning Systems for Removing Yellow Sand Dust
    Journal of Desert Research, 2003
    Co-Authors: Lee Jae

    Abstract:

    The size distribution and mass concentration of Yellow sand dust observed in China and Korea are analyzed, and the removal efficiency of a plasma Air Cleaning System based on the principle of electrostatic precipitation is evaluated for improving indoor Air quality. Mass median diameter of Yellow sand dust sampled in Beijing and Seoul ranges from 7.0 to 8.0 μm with the mass concentration of 300~\{1 462\} μg\5m-3. For the single\|pass test, the efficiency of dust removal increases with increasing particle size and decreasing flow rate. The removal efficiency of Yellow sand dust in the plasma Air Cleaning System at the face velocity of 1.0 m\5s\+\{-1\} is larger than 80%. For the multi\|pass test in occupied spaces, the operation time required to reduce Yellow sand dust concentration from the initial concentration of 300 μg\5m-3 to 150 μg\5m-3, the criteria of indoor Air quality, is 10 minutes for the test room of 27 m3. The plasma Air Cleaning System is suitable for the removal of Yellow sand dust for maintaining suitable indoor Air quality.

Zhong Lin Wang – One of the best experts on this subject based on the ideXlab platform.

  • Triboelectric nanogenerator as a new technology for effective PM2.5 removing with zero ozone emission
    Elsevier, 2018
    Co-Authors: Zhong Lin Wang

    Abstract:

    Particles matters (PMs) have raised serious concerns due to their great impact on human health. Coupling triboelectric effect and electrostatic induction, triboelectric nanogenerator (TENG) has demonstrated as a practical sustainable power source for portable devices. The characteristics of TENG, such as high electric field and high output power, make it a promising technology in Air Cleaning applications. Here, the mechanism of the TENG and its application in self-powered Air Cleaning technologies are reviewed. Using the TENG as a voltage source, a self-powered Air Cleaning System for removing SO2 and PMs is developed; and the removal efficiency of nanofiber filters is greatly enhanced due to electrostatic attraction. More importantly, the technology is not only most effective for removing nano-scale particles that cannot be effectively filtered using conventional fiber-film filters, but also produces no ozone emission. Besides being an independent power supply, a vibration TENG based triboelectric filter is designed to effectively capture the PMs from automobile exhaust fumes. Hence, the TENG demonstrates its great potential in self-powered Air Cleaning applications. Keywords: Triboelectric nanogenerator, Power source, Particulate matter, Air Cleaning, Nanofiber filte

  • Self-powered Cleaning of Air pollution by wind driven triboelectric nanogenerator
    Nano Energy, 2015
    Co-Authors: Shuwen Chen, Caizhen Gao, Wei Tang, Huarui Zhu, Yu Han, Qianwen Jiang, Xia Cao, Zhong Lin Wang

    Abstract:

    Abstract Air pollution is one of the major challenges faced by the human kind, but Cleaning of Air is a horrendous task and hugely expensive, because of its large scope and the cost of energy. Up to now, all of the Air Cleaning Systems are generally driven by external power, making it rather expensive and infeasible. Here, we introduce the first self-powered Air Cleaning System focusing on sulfur dioxide (SO2) and dust removal as driven by the electricity generated by natural wind, with the use of rotating triboelectric nanogenerator (R-TENG). Distinguished from traditional approach of electrostatic precipitation by applying a voltage of thousand volt, our technology takes the advantages of high output voltage of R-TENG, typically in the order of a few hundreds volt. This self-powered Air Cleaning System not only adsorbs dust particles in Air, but also oxidizes SO2 without producing byproducts. Therefore, it could be potential for easing the haze–fog situation, which is one of the most important directions in self-powered electrochemistry.

D. L. Kuhlers – One of the best experts on this subject based on the ideXlab platform.

  • Microbial Reduction Efficiencies of Filtration, Electrostatic Polarization, and UV Components of a Germicidal Air Cleaning System
    Journal of Food Science, 2002
    Co-Authors: C. J. Cundith, Chris R. Kerth, W. R. Jones, T. A. Mccaskey, D. L. Kuhlers

    Abstract:

    This study determined the effectiveness of components of a germicidal AirCleaning System involving filtration, electrostatic polarization, and UV light on the reduction of Airborne bacteria and molds. The filter alone, filter and electrostatic polarization combined, and the filter, electrostatic polarization, and UV light were found to be effective (P < 0.05) in reducing a given concentration of M. luteus and S. marcescens by 90 to 92%. The same components were also found to be effective (P < 0.05) in reducing indigenous Airborne bacteria and molds from ambient Air in processing plant production conditions by 62 to 77% after only 1 pass through the filtration System. A germicidal Air-filtration System utilizing electrostatic polarization and ultraviolet light can be used to reduce the chance of contaminating surfaces with Airborne bacteria and molds.

  • AirCleaning System Effectiveness for Control of Airborne Microbes in a Meat-processing Plant
    Journal of Food Science, 2002
    Co-Authors: C. J. Cundith, Chris R. Kerth, W. R. Jones, T. A. Caskey, D. L. Kuhlers

    Abstract:

    The effectiveness of duct-mounted and console wall-mounted germicidal Air Cleaning units on the reduc- tion of Airborne microbes was determined. Preliminary Air samples were collected and Airborne bacteria and molds were monitored over time in the retail sales room, processing room, aging cooler and chill cooler of the Auburn Univ. Meat Laboratory. Log 10 cfu/m 3 bacteria and molds were not reduced by filtration of fresh Air in the Air duct of the sales room (P > 0.05). After at least 18 h of filtration, 3 or 4 console filtration units operated simultaneously were effective (P 0.05) at reducing Airborne bacteria and molds under controlled conditions in the processing room, aging cooler, and chill cooler. Three console filtration units reduced (P 0.05) Airborne molds under production conditions in the processing room. These data suggest that an electrostatically polarized filter medium combined with scanning UV light is effective in reducing Airborne microorganisms in a small processing plant.