A novel polymer-arrayed electrostatic precipitator with electrical resistance material for the removal of fine particles

Yun, Seong Jin; Min, Byung Ryul; Seo, Youngjin

doi:10.1016/j.jaerosci.2012.10.005

Cited by 16 publications

(4 citation statements)

References 12 publications

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“…The differences among the four groups were statistically significant (p < 0.001), while the four different types of steel alloys (plain steel, zinc plated steel, high carbon steel, and alloy steel) were not significantly different (p > 0.05). The results presented in Figure 6 show a trend similar to that found by Yun et al (2013) in which the collection efficiency of a polymer-arrayed collector increased as the resistivity (inversely proportional to conductivity) of the conductive ink covering a polyethylene terephthalate (PET) film (i.e., the electrode) increased. Similar to the setup used by Yun et al (2013), the conductive material in our setup (EPSS collection electrode) was covered by a substance (superhydrophobic material) substance and we observed a similar trend.…”

Section: Collection Of Psl Particles and E Colisupporting

confidence: 77%

Development and Optimization of the Electrostatic Precipitator with Superhydrophobic Surface (EPSS) Mark II for Collection of Bioaerosols

Han

Fennell

Mainelis

2015

Aerosol Science and Technology

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We recently developed an electrostatic collector for bioaerosols that electrostatically deposits biological particles onto a 3.2 mm electrode covered by a superhydrophobic substance. The deposited biological particles are removed and collected by rolling water droplets (20 or 40 microliter) which results in high concentration rates. The collector has been improved further by integrating it with an electrical charger. Here, we describe the development and optimization of the charger and collection chamber, while maximizing collection efficiency and minimizing particle loss. The resulting sampler is made of static dissipative material (e.g., Delrin), is shaped as a closed half cylinder, and is integrated with a charger. The sampler's round top section contains eight carbon fiber brushes (ion sources to charge particles), while its flat bottom section holds a rectangular collection electrode (254 £ 3.2 mm) made of pressed carbon fiber and coated with a superhydrophobic material.The optimized configuration of the EPSS Mark II had a collection efficiency of up to 84% when sampling airborne Escherichia coli at 10 L/min and for 10 min. The bacteria were accumulated in rolling water droplets as small as 20 microliters, and the sampler achieved sample concentration rates of up to 4.2 £ 10 5 /min. When the sampler was operated for a longer time period (60 min), its collection efficiency was 72%. The efficiency decrease was most likely due to a reduced particle removal from the electrode, but the difference was not statistically significant. Since the EPSS Mark II shows satisfactory collection efficiency and high sample concentration rate, it could serve as a basis for developing a field-deployable version of the sampler.

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Section: Collection Of Psl Particles and E Colisupporting

confidence: 77%

Development and Optimization of the Electrostatic Precipitator with Superhydrophobic Surface (EPSS) Mark II for Collection of Bioaerosols

Han

Fennell

Mainelis

2015

Aerosol Science and Technology

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“…The order of the ozone generation rate with thin metal wires is Ti > Ta > Mo > Ni > Cu > Pd > Ag. Besides thin metal wires commonly used in traditional ESP, carbon nanotubes and carbon fiber ionizers have been used as a corona discharge device in recent studies [51,54,56]. Lower ozone generation rates have been observed in these novel prototypes and such a reduction has been attributed to the decrease in discharge electrode diameter.…”

Section: Factors Affecting the Ozone Generation Ratementioning

confidence: 99%

Electrostatic Precipitators as an Indoor Air Cleaner—A Literature Review

et al. 2020

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Many people spend most of their time in an indoor environment. There is a positive relationship between indoor environmental quality and the health, wellbeing, and productivity of occupants in buildings. The indoor environment is affected by pollutants, such as gases and particles. Pollutants can be removed from the indoor environment in various ways. Air cleaning devices are commonly marketed as benefitting the removal of air pollutants and consequently, improving indoor air quality. Depending on the type of cleaning technology, air cleaners may generate undesired and toxic by-products. Different air filtration technologies such as electrostatic precipitators have been introduced to the market. The electrostatic precipitator (ESP) has been used in buildings because it can remove particles while only causes low pressure drops. Electrostatic precipitators can be either in-duct or standalone units. This review aims to give an overview of ESP use, methods for testing this product, the performance of existing ESPs in removing pollutants, their by-products, and the existing market for ESPs.

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“…To enhance the field strength between the electrode plates and reduce ozone generation, an intense field dielectric (IFD), also called a micro-electrostatic filter, was proposed. It encapsulates the metal electrode in the dielectric material to achieve high efficiency, low resistance, and low ozone emission [35][36][37]. In the research on the plate-type microelectrostatic filter, the researchers have proved that the resistance of the plate-type microelectrostatic filters is only 14 Pa at 1.0 m/s, and the initial PM2.5 filtration efficiency can also reach 99.8%.…”

Section: Introductionmentioning

confidence: 99%

Simulation Study of a Novel Cylindrical Micro-Electrostatic Particulate Air Filter with High Filtration Efficiency and Low Resistance

Liu

Kong

et al. 2021

Buildings

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The purification of indoor pathogenic microorganisms has become a topic of concern. The use of nonwoven media air filters causes high resistance, and the problem of noise limited their application under high air volume. Thus, we propose a micro-electrostatic filter, which has improved performance compared to an electrostatic filter, with a new type of cylindrical structure to tackle indoor pathogenic microbial aerosol pollution. Through simulation, it is found that the filtration performance of a cylindrical structure is better than that of a plate structure under all simulation conditions. For particles larger than 1 μm, the shortest theoretical length of the dust collecting plate required for the cylindrical structure is 34% shorter than that for the plate structure. For 0.1 μm particles, the filtration efficiency of the cylindrical structure is nearly 20~30% (the maximum value is 29.76%) higher than that of the plate structure, while the air velocity is 1.5 m/s~2.5 m/s. The resistance of the cylindrical micro-electrostatic filter is only half of that of the combined plate type micro-electrostatic filter, indicating that the cartridge structure has enormous energy-saving potential. The introduction of the quality factor further proves that the integrated filtration performance of the cartridge micro-electrostatic filter is better. The application of cylindrical micro-electrostatic filters in HVAC systems can help improve indoor air quality and reduce health risks.

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A novel polymer-arrayed electrostatic precipitator with electrical resistance material for the removal of fine particles

Cited by 16 publications

References 12 publications

Development and Optimization of the Electrostatic Precipitator with Superhydrophobic Surface (EPSS) Mark II for Collection of Bioaerosols

Development and Optimization of the Electrostatic Precipitator with Superhydrophobic Surface (EPSS) Mark II for Collection of Bioaerosols

Electrostatic Precipitators as an Indoor Air Cleaner—A Literature Review

Simulation Study of a Novel Cylindrical Micro-Electrostatic Particulate Air Filter with High Filtration Efficiency and Low Resistance

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