PMID- 31514016 OWN - NLM STAT- MEDLINE DCOM- 20200424 LR - 20200424 IS - 1096-0953 (Electronic) IS - 0013-9351 (Linking) VI - 178 DP - 2019 Nov TI - First results on transient plasma-based remediation of nanoscale particulate matter in restaurant smoke emissions. PG - 108635 LID - S0013-9351(19)30432-3 [pii] LID - 10.1016/j.envres.2019.108635 [doi] AB - Recent studies have shown that nanoscale particulate matter produced in commercial charbroiling processes represents a serious health hazard and has been linked to various forms of cancer and cardiopulmonary disease. In this study, we propose a highly effective method for treating restaurant smoke emissions using a transient pulsed plasma reactor produced by nanosecond high voltage pulses. We measure the size and relative mass distributions of particulate matter (PM) produced in commercial charbroiling processes (e.g., cooking of hamburger meat) both with and without the plasma treatment. Here, the plasma discharge is produced in a 3" diameter cylindrical reactor with a 5-10 ns high voltage (17 kV) pulse generator. The distribution of untreated nanoparticle sizes is peaked around 125-150 nm in diameter, as measured using a scanning mobility particle sizer (SMPS) spectrometer. With plasma treatment, we observe up to a 55-fold reduction in relative particle mass and a significant reduction in the nanoparticle size distribution using this method. The effectiveness of the nanoscale PM remediation increases with both the pulse repetition rate and pulse voltage, demonstrating the scalability of this approach for treating particulate matter at higher flow rates and larger diameter reactors. CI - Copyright (c) 2019 Elsevier Inc. All rights reserved. FAU - Yang, Sisi AU - Yang S AD - Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA. FAU - Subramanian, Sriram AU - Subramanian S AD - Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA. FAU - Singleton, Dan AU - Singleton D AD - Transient Plasma Systems, Inc., Torrance, CA 90501, USA. FAU - Schroeder, Christi AU - Schroeder C AD - Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA. FAU - Schroeder, William AU - Schroeder W AD - Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA. FAU - Gundersen, Martin A AU - Gundersen MA AD - Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA; Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA. FAU - Cronin, Stephen B AU - Cronin SB AD - Ming Hsieh Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA; Department of Physics and Astronomy, University of Southern California, Los Angeles, CA 90089, USA. Electronic address: scronin@usc.edu. LA - eng PT - Journal Article DEP - 20190809 PL - Netherlands TA - Environ Res JT - Environmental research JID - 0147621 RN - 0 (Air Pollutants) RN - 0 (Particulate Matter) RN - 0 (Smoke) SB - IM MH - *Air Pollutants MH - *Cooking MH - Environmental Monitoring MH - Environmental Restoration and Remediation/*methods MH - Particle Size MH - *Particulate Matter MH - Restaurants/*statistics & numerical data MH - Smoke OTO - NOTNLM OT - Charbroiler emission OT - Nanoparticles OT - Particulate matter OT - Plasma OT - Remediation EDAT- 2019/09/13 06:00 MHDA- 2020/04/25 06:00 CRDT- 2019/09/13 06:00 PHST- 2019/05/15 00:00 [received] PHST- 2019/08/06 00:00 [revised] PHST- 2019/08/06 00:00 [accepted] PHST- 2019/09/13 06:00 [pubmed] PHST- 2020/04/25 06:00 [medline] PHST- 2019/09/13 06:00 [entrez] AID - S0013-9351(19)30432-3 [pii] AID - 10.1016/j.envres.2019.108635 [doi] PST - ppublish SO - Environ Res. 2019 Nov;178:108635. doi: 10.1016/j.envres.2019.108635. Epub 2019 Aug 9.