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Plasma-enhanced electrostatic precipitation (PE-ESP) of restaurant smoke emissions.

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Title: Plasma-enhanced electrostatic precipitation (PE-ESP) of restaurant smoke emissions.
Authors: Zhang, Boxin1 (AUTHOR), Schrock, Derek2 (AUTHOR), Pavin, Fuoad2 (AUTHOR), Livchak, Andrey2 (AUTHOR), Thomas, Mark3 (AUTHOR), Murthy, Sunil3 (AUTHOR), Singleton, Dan3 (AUTHOR), Cronin, Stephen B.1,4,5 (AUTHOR) scronin@usc.edu
Source: Environmental Science & Pollution Research. Feb2026, Vol. 33 Issue 7, p2578-2587. 10p.
Subject Terms: *Electrostatic precipitation, *Particulate matter, *Plasma flow, *Nanoparticles, *Odor control, *Smoked foods, *Aerosols
Abstract: The remediation of nanoscale particulate matter generated during restaurant cooking processes presents a unique challenge, characterized by higher flow rates than most engines but at significantly lower pollutant concentrations. As such, it combines the worst aspects of both scenarios. We present a novel solution to this persistent challenge using transient plasma generated by high-voltage (20 kV) nanosecond pulse discharge. This approach has recently demonstrated potential for enhancing electrostatic precipitation (ESP) in capturing oil-based aerosol particles from restaurant emissions and diesel particulates.(Jang, Yoo et al. 2023) However, prior studies have been limited to small-scale systems operating at low flow rates (~ 2.8 CFM, i.e., 0.0013 m3/s). Here, we report particulate matter (PM) mass concentrations plotted over 7-min cooking cycles with 24 hamburgers at 1000X higher flow rates than those reported previously. At flow rates of 2000 and 3000 cubic feet per minute (CFM), i.e., 0.94 m3/s and 1.416 m3/s, we achieve 93.7% and 86.9% reduction in PM, respectively. This system uses a total of 805 Watts of electrical power, which is less than 5% of a typical rooftop blower power (i.e., 18 kW). This system provides the additional benefit of reducing odor. The PE-ESP enables the system to operate at significantly higher flow rates (3000 CFM, i.e., 1.416 m3/s) than current filter-based technologies without creating a large backpressure on the fan (i.e., blower). In fact, our system produces a pressure drop of just 0.85 inches of water gauge (inwg) (212 Pa) at 2000 CFM (0.94 m3/s) and 1.91 inwg (476 Pa) at 3000 CFM (1.416 m3/s), which is considerably lower than current filter-based technologies and well below the blower limit, which can only tolerate a pressure drop of up to 10 inwg (2494 Pa) and represents a relatively firm design constraint. This plasma-enhanced approach demonstrates the potential for deploying such a system to restaurants to improve the efficacy of the remediation of smoke. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
FullText Text:
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DbLabel: Energy & Power Source
An: 192253622
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PubType: Academic Journal
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  Data: Plasma-enhanced electrostatic precipitation (PE-ESP) of restaurant smoke emissions.
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  Data: <searchLink fieldCode="JN" term="%22Environmental+Science+%26+Pollution+Research%22">Environmental Science & Pollution Research</searchLink>. Feb2026, Vol. 33 Issue 7, p2578-2587. 10p.
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  Data: *<searchLink fieldCode="DE" term="%22Electrostatic+precipitation%22">Electrostatic precipitation</searchLink><br />*<searchLink fieldCode="DE" term="%22Particulate+matter%22">Particulate matter</searchLink><br />*<searchLink fieldCode="DE" term="%22Plasma+flow%22">Plasma flow</searchLink><br />*<searchLink fieldCode="DE" term="%22Nanoparticles%22">Nanoparticles</searchLink><br />*<searchLink fieldCode="DE" term="%22Odor+control%22">Odor control</searchLink><br />*<searchLink fieldCode="DE" term="%22Smoked+foods%22">Smoked foods</searchLink><br />*<searchLink fieldCode="DE" term="%22Aerosols%22">Aerosols</searchLink>
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  Label: Abstract
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  Data: The remediation of nanoscale particulate matter generated during restaurant cooking processes presents a unique challenge, characterized by higher flow rates than most engines but at significantly lower pollutant concentrations. As such, it combines the worst aspects of both scenarios. We present a novel solution to this persistent challenge using transient plasma generated by high-voltage (20 kV) nanosecond pulse discharge. This approach has recently demonstrated potential for enhancing electrostatic precipitation (ESP) in capturing oil-based aerosol particles from restaurant emissions and diesel particulates.(Jang, Yoo et al. 2023) However, prior studies have been limited to small-scale systems operating at low flow rates (~ 2.8 CFM, i.e., 0.0013 m3/s). Here, we report particulate matter (PM) mass concentrations plotted over 7-min cooking cycles with 24 hamburgers at 1000X higher flow rates than those reported previously. At flow rates of 2000 and 3000 cubic feet per minute (CFM), i.e., 0.94 m3/s and 1.416 m3/s, we achieve 93.7% and 86.9% reduction in PM, respectively. This system uses a total of 805 Watts of electrical power, which is less than 5% of a typical rooftop blower power (i.e., 18 kW). This system provides the additional benefit of reducing odor. The PE-ESP enables the system to operate at significantly higher flow rates (3000 CFM, i.e., 1.416 m3/s) than current filter-based technologies without creating a large backpressure on the fan (i.e., blower). In fact, our system produces a pressure drop of just 0.85 inches of water gauge (inwg) (212 Pa) at 2000 CFM (0.94 m3/s) and 1.91 inwg (476 Pa) at 3000 CFM (1.416 m3/s), which is considerably lower than current filter-based technologies and well below the blower limit, which can only tolerate a pressure drop of up to 10 inwg (2494 Pa) and represents a relatively firm design constraint. This plasma-enhanced approach demonstrates the potential for deploying such a system to restaurants to improve the efficacy of the remediation of smoke. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=192253622
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        Value: 10.1007/s11356-026-37448-x
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        Text: English
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        StartPage: 2578
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      – SubjectFull: Electrostatic precipitation
        Type: general
      – SubjectFull: Particulate matter
        Type: general
      – SubjectFull: Plasma flow
        Type: general
      – SubjectFull: Nanoparticles
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      – SubjectFull: Odor control
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      – SubjectFull: Smoked foods
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      – SubjectFull: Aerosols
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      – TitleFull: Plasma-enhanced electrostatic precipitation (PE-ESP) of restaurant smoke emissions.
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              Text: Feb2026
              Type: published
              Y: 2026
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