{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T03:34:02Z","timestamp":1788406442470,"version":"build-2803163510"},"reference-count":64,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2022,6,12]],"date-time":"2022-06-12T00:00:00Z","timestamp":1654992000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJERPH"],"abstract":"<jats:p>This study investigated the single-pass performance of a negative corona electrostatic precipitators (ESP) in removing suspended particulates (PM2.5 and PM10), formaldehyde (HCHO), and bioaerosols (bacteria and fungi) and measured the ozone (O3) concentration generated by ESP. The experimental results revealed that if the operational conditions for the ESP were set to high voltage (\u221210.5 kV) and low air flow rate (2.4 m3\/min), ESP had optimal air pollutant removal efficiency. In the laboratory system, its PM2.5 and PM10 removal rates both reached 99% at optimal conditions, and its HCHO removal rate was 55%. In field tests, its PM2.5, PM10, HCHO, bacteria, and fungi removal rates reached 89%, 90%, 46%, 69%, and 85% respectively. The ESP in the laboratory system (\u221210.5 kV and 2.4 m3\/min) generated 7.374 ppm of O3 under optimal conditions. Under the same operational conditions, O3 generated by ESP in the food waste storage room and the meeting room were 1.347 ppm and 1.749 ppm, respectively. The removal of HCHO and bioaerosols was primarily attributed to their destruction in the corona, as well as ozone oxidation, and collection on the dust collection plate.<\/jats:p>","DOI":"10.3390\/ijerph19127209","type":"journal-article","created":{"date-parts":[[2022,6,12]],"date-time":"2022-06-12T09:26:48Z","timestamp":1655026008000},"page":"7209","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["The Assessment of Indoor Formaldehyde and Bioaerosol Removal by Using Negative Discharge Electrostatic Air Cleaners"],"prefix":"10.3390","volume":"19","author":[{"given":"Chao-Yun","family":"Liu","sequence":"first","affiliation":[{"name":"Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 106344, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chao-Heng","family":"Tseng","sequence":"additional","affiliation":[{"name":"Institute of Environmental Engineering and Management, National Taipei University of Technology, Taipei 106344, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kai-Feng","family":"Wang","sequence":"additional","affiliation":[{"name":"Union Professional Group of Architecture, Taipei 110057, Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,6,12]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"133","DOI":"10.1016\/j.elstat.2006.07.012","article-title":"Modern electrostatic devices and methods for exhaust gas cleaning: A brief review","volume":"65","author":"Jaworek","year":"2007","journal-title":"J. Electrost."},{"key":"ref_2","first-page":"315","article-title":"A semi-empirical approach to predict the total collectionefficiency of electrostatic precip-itators","volume":"148","author":"Zhao","year":"2012","journal-title":"Chem. Eng. Commun."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"741","DOI":"10.1001\/archpediatrics.2011.111","article-title":"A randomized trial of air cleaners and a health coach to improve indoor air quality for inner-city children with asthma and secondhand smoke exposure","volume":"165","author":"Butz","year":"2011","journal-title":"Arch. Pediatr. Adolesc. Med."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1111\/j.1600-0668.2005.00331.x","article-title":"The effects of intervention with local electrostatic air cleaners on airborne dust and the health of office employees","volume":"15","author":"Skulberg","year":"2005","journal-title":"Indoor Air"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"2842","DOI":"10.1109\/TPS.2013.2253133","article-title":"Removal of Fine and Ul-trafine Particles from Air by Microelectrostatic Precipitation","volume":"41","author":"Mermigkas","year":"2013","journal-title":"IEEE Trans. Plasma Sci."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"5003","DOI":"10.1016\/j.atmosenv.2008.02.011","article-title":"Ultrafine particle removal and generation by portable air cleaners","volume":"42","author":"Waring","year":"2008","journal-title":"Atmos. Environ."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"129","DOI":"10.1034\/j.1600-0668.2002.09136.x","article-title":"Effect of face velocity and the nature of aerosol on the col-lection of submicrometer particles by electrostatic precipitator","volume":"12","author":"Morawska","year":"2002","journal-title":"Indoor Air"},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Mizuno, A. (2009, January 4\u20138). Recent Development of Electrostatic Technologies in Environmental Remediation. Proceedings of the 2009 IEEE Industry Applications Society Annual Meeting, Houston, TX, USA.","DOI":"10.1109\/IAS.2009.5324817"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1080\/027868299304732","article-title":"Collection of Airborne Microorgan-isms by Electrostatic Precipitation","volume":"30","author":"Mainelis","year":"1999","journal-title":"Aerosol Sci. Technol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"734","DOI":"10.1016\/j.elstat.2013.04.002","article-title":"Physical and microbial collection efficiencies of an electro-static precipitator for abating airborne particulates in postharvest agricultural processing","volume":"71","author":"Koide","year":"2013","journal-title":"J. Electrost."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"512","DOI":"10.1109\/TIA.2008.916724","article-title":"High-Efficiency Portable Electrostatic Air Cleaner with Insulated Electrodes (January 2007)","volume":"44","author":"Botvinnik","year":"2008","journal-title":"IEEE Trans. Ind. Appl."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"A1","DOI":"10.1088\/0741-3335\/49\/5A\/S01","article-title":"Industrial applications of atmospheric non-thermal plasma in environmental remediation","volume":"49","author":"Mizuno","year":"2006","journal-title":"Plasma Phys. Control Fusion"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"44","DOI":"10.1016\/j.chemosphere.2018.07.080","article-title":"Removal effect of the low-low temperature electrostatic pre-cipitator on polycyclic aromatic hydrocarbons","volume":"211","author":"Li","year":"2018","journal-title":"Chemosphere"},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"903","DOI":"10.1080\/02786826.2017.1329516","article-title":"Design and development of a self-contained personal electrostatic bioaerosol sampler (PEBS) with a wire-to-wire charger","volume":"51","author":"Han","year":"2017","journal-title":"Aerosol Sci. Technol."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1016\/j.jaerosci.2017.12.014","article-title":"A novel electrostatic precipitator-type small air purifier with a carbon fiber ionizer and an activated carbon fiber filter","volume":"117","author":"Kim","year":"2018","journal-title":"J. Aerosol Sci."},{"key":"ref_16","unstructured":"Hensel, K., Pawlat, J., Takashima, K., and Mizuno, A. (2003, January 5). Treatment of HCHO using corona discharge and pellet catalysts. Proceedings of the 30th International Conference on Plasma Science, Jeju, Korea."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"012004","DOI":"10.1088\/1755-1315\/435\/1\/012004","article-title":"Experimental Study on the Removal of Formaldehyde by Plasma-Catalyst","volume":"435","author":"Yuan","year":"2020","journal-title":"IOP Conf. Ser. Earth Environ. Sci."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"314","DOI":"10.1016\/j.cej.2011.04.011","article-title":"Removal of low-concentration formaldehyde in air by DC corona discharge plasma","volume":"171","author":"Wan","year":"2011","journal-title":"Chem. Eng. J."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"465203","DOI":"10.1088\/1361-6463\/ab382a","article-title":"Role of O3 in the removal of HCHO using a DC streamer plasma","volume":"52","author":"He","year":"2019","journal-title":"J. Phys. D Appl. Phys."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"248","DOI":"10.1016\/j.jcs.2010.01.007","article-title":"Application of ozone in grain processing","volume":"51","author":"Tiwari","year":"2010","journal-title":"J. Cereal Sci."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"542","DOI":"10.1109\/28.55962","article-title":"The effect of corona wire heating on the downstream ozone concentration profiles in an air-cleaning wire-duct electrostatic precipitator","volume":"26","author":"Ohkubo","year":"1990","journal-title":"IEEE Trans. Ind. Appl."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"504","DOI":"10.1109\/28.137427","article-title":"Ozone generation in DC-energized electrostatic precipitators","volume":"28","author":"Viner","year":"1992","journal-title":"IEEE Trans. Ind. Appl."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"792","DOI":"10.1080\/027868201753227343","article-title":"Filtration Characteristics of a Miniature Electrostatic Precipitator","volume":"35","author":"Huang","year":"2001","journal-title":"Aerosol Sci. Technol."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"689","DOI":"10.1080\/02786829708965505","article-title":"Ozone Generation by Indoor, Electrostatic Air Cleaners","volume":"27","author":"Boelter","year":"1997","journal-title":"Aerosol Sci. Technol."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"622","DOI":"10.1016\/0021-8502(86)90173-4","article-title":"Optimization of Filtration Efficiency and Ozone Pro-duction of the Electrostatic Precipitator","volume":"17","author":"Hautanen","year":"1986","journal-title":"J. Aerosol Sci."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"1242","DOI":"10.1111\/j.1365-2621.2001.tb15196.x","article-title":"Microbiological Aspects of Ozone Applications in Food: A Review","volume":"66","author":"Khadre","year":"2001","journal-title":"J. Food Sci."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/j.tifs.2009.01.049","article-title":"Modelling approaches to ozone processing of liquid foods","volume":"20","author":"Cullen","year":"2009","journal-title":"Trends Food Sci. Technol."},{"key":"ref_28","unstructured":"(2012). Standard Method of Total Bacteria Count of Indoor Air (Standard No. NIEA E301.12C)."},{"key":"ref_29","unstructured":"(2012). Standard Method of Total Fungi Count of Indoor Air (Standard No. NIEA 401.12C)."},{"key":"ref_30","unstructured":"Hinds, W.C. (1999). Aerosol Technology: Properties, Behavior, and Measurement of Airborne Particles, John-Wiley and Sons."},{"key":"ref_31","first-page":"355","article-title":"Bewegung und ladung der elektrizit\u00e4tstr\u00e4ger im zylinderkondensator","volume":"68","author":"Deutsch","year":"1922","journal-title":"Ann. Der Physik."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"613","DOI":"10.1109\/TDEI.2011.5739468","article-title":"Negative corona inception voltages in rod-plane gaps at various air pressures and humidities","volume":"18","author":"Bian","year":"2011","journal-title":"IEEE Trans. Dielectr. Electr. Insul."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"1720","DOI":"10.1109\/TDEI.2013.6633702","article-title":"Effect of humidity on negative corona discharge of electrostatic precipitators","volume":"20","author":"Wang","year":"2013","journal-title":"IEEE Trans. Dielectr. Electr. Insul."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1961","DOI":"10.1088\/0022-3727\/35\/16\/310","article-title":"Simultaneous removal of aerosol particles, NOx and SO2, from incense smokes by a DC electrostatic precipitator with dielectric barrier discharge precharges","volume":"35","author":"Kawada","year":"2002","journal-title":"J. Phys. D Appl. Phys."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"1509","DOI":"10.1088\/0022-3727\/12\/9\/013","article-title":"Mechanism of ozone generation in air-fed ozonisers","volume":"12","author":"Yagi","year":"1979","journal-title":"J. Phys. D Appl. Phys."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"61","DOI":"10.1111\/ina.12174","article-title":"Indoor bioaerosol dynamics","volume":"26","author":"Nazaroff","year":"2014","journal-title":"Indoor Air"},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"16014","DOI":"10.1007\/s11356-015-4793-z","article-title":"Assessment of bioaerosol contamination (bacteria and fungi) in the largest urban wastewater treatment plant in the Middle East","volume":"22","author":"Niazi","year":"2015","journal-title":"Environ. Sci. Pollut. Res."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"12","DOI":"10.3390\/md6010012","article-title":"Actinomycetes from Sediments in the Trondheim Fjord, Norway: Diversity and Biological Activity","volume":"6","author":"Bredholt","year":"2008","journal-title":"Mar. Drugs"},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1080\/15459620490424357","article-title":"Assessment of Electrical Charge on Airborne Microorganisms by a New Bioaerosol Sampling Method","volume":"1","author":"Lee","year":"2004","journal-title":"J. Occup. Environ. Hyg."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1087","DOI":"10.1016\/S0021-8502(01)00039-8","article-title":"Electrical charges on air-borne microorganisms","volume":"32","author":"Mainelis","year":"2001","journal-title":"Aerosol Sci."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"1417","DOI":"10.1016\/S0021-8502(02)00091-5","article-title":"Collection of airborne microorganisms by a new electrostatic precipitator","volume":"33","author":"Mainelis","year":"2002","journal-title":"J. Aerosol Sci."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"204","DOI":"10.1016\/j.elstat.2012.11.029","article-title":"Electrostatic precipitation of airborne bio-aerosols","volume":"71","author":"Xu","year":"2013","journal-title":"J. Electrost."},{"key":"ref_43","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1002\/bit.10290","article-title":"Effect of electrical charges and fileds on injury and viability of airborne bacteria","volume":"79","author":"Mainelis","year":"2002","journal-title":"Biotechnol. Bioeng."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S0378-5173(01)00752-9","article-title":"Low-temperature sterilization using gas plasmas: A review of the experiments and an analysis of the inactivation mechanisms","volume":"226","author":"Moisan","year":"2001","journal-title":"Int. J. Pharm."},{"key":"ref_45","doi-asserted-by":"crossref","first-page":"181","DOI":"10.1021\/es00001a023","article-title":"Destruction of Formaldehyde with Dielectric Barrier Discharge Plasmas","volume":"29","author":"Chang","year":"1995","journal-title":"Environ. Sci. Technol."},{"key":"ref_46","doi-asserted-by":"crossref","first-page":"242","DOI":"10.1080\/1073161X.1993.10467131","article-title":"Corona Destruction: An Innova-tive Control Technology for VOCs and Air Toxics","volume":"4","author":"Nunez","year":"1993","journal-title":"Air Waste"},{"key":"ref_47","doi-asserted-by":"crossref","first-page":"354032","DOI":"10.1155\/2012\/354032","article-title":"Synergistic Effect of Nanophotocatalysis and Nonthermal Plasma on the Removal of Indoor HCHO","volume":"2012","author":"Lu","year":"2012","journal-title":"Int. J. Photoenergy"},{"key":"ref_48","doi-asserted-by":"crossref","first-page":"1090","DOI":"10.1016\/j.jhazmat.2009.10.034","article-title":"Formaldehyde removal from gas streams by means of NaNO2 dielectric barrier discharge plasma","volume":"175","author":"Liang","year":"2010","journal-title":"J. Hazard. Mater."},{"key":"ref_49","doi-asserted-by":"crossref","first-page":"116964","DOI":"10.1016\/j.seppur.2020.116964","article-title":"Electrostatic precipitator for fine and ultrafine particle removal from indoor air environments","volume":"247","author":"Chen","year":"2020","journal-title":"Sep. Purif. Technol."},{"key":"ref_50","doi-asserted-by":"crossref","first-page":"489","DOI":"10.1109\/TIGA.1969.4181060","article-title":"Ozone Generation in Positive Corona Electrostatic Precipitators","volume":"IGA-5","author":"Castle","year":"1969","journal-title":"IEEE Trans. Ind. Gen. Appl."},{"key":"ref_51","first-page":"2037","article-title":"Long-term ozone generation from electrostatic air cleaners","volume":"3","author":"Tanasomwang","year":"1997","journal-title":"IEEE Ind. Appl. Soc."},{"key":"ref_52","doi-asserted-by":"crossref","first-page":"471","DOI":"10.1111\/php.13391","article-title":"Ozone Generation by Ultraviolet Lamps","volume":"97","author":"Claus","year":"2021","journal-title":"Photochem. Photobiol."},{"key":"ref_53","doi-asserted-by":"crossref","first-page":"669","DOI":"10.1016\/j.tsf.2005.08.266","article-title":"Oxygen atom behaviour in the non thermal plasma","volume":"506\u2013507","author":"Oda","year":"2006","journal-title":"Thin Solid Film."},{"key":"ref_54","doi-asserted-by":"crossref","first-page":"31","DOI":"10.1080\/01919512.2013.721286","article-title":"Dimensional Analysis of Detrimental Ozone Generation by Negative Wire-to-Plate Corona Discharge in Both Dry and Humid Air","volume":"35","author":"Bo","year":"2013","journal-title":"Ozone Sci. Eng."},{"key":"ref_55","doi-asserted-by":"crossref","first-page":"808","DOI":"10.1109\/TPS.2005.844530","article-title":"Effect of relative humidity on electron distribution and ozone production by DC coronas in air","volume":"33","author":"Chen","year":"2005","journal-title":"IEEE Trans. Plasma Sci."},{"key":"ref_56","doi-asserted-by":"crossref","first-page":"035202","DOI":"10.1088\/0022-3727\/42\/3\/035202","article-title":"Numerical modelling of ozone production in a wire-cylinder corona discharge and compari-son with a wire-plate corona discharge","volume":"42","author":"Wang","year":"2008","journal-title":"J. Phys. D Appl. Phys."},{"key":"ref_57","doi-asserted-by":"crossref","first-page":"380","DOI":"10.1016\/j.jhazmat.2011.09.044","article-title":"The roles of various plasma species in the plasma and plasma-catalytic removal of low-concentration formaldehyde in air","volume":"196","author":"Fan","year":"2011","journal-title":"J. Hazard. Mater."},{"key":"ref_58","doi-asserted-by":"crossref","first-page":"5829","DOI":"10.1016\/j.surfcoat.2005.08.124","article-title":"Pulse-modulated, high-frequency plasma sterilization at atmospheric-pressure","volume":"200","author":"Ohkawa","year":"2006","journal-title":"Surf. Coat. Technol."},{"key":"ref_59","doi-asserted-by":"crossref","first-page":"41.1","DOI":"10.1088\/1367-2630\/5\/1\/341","article-title":"Plasma interaction with microbes","volume":"5","author":"Laroussi","year":"2003","journal-title":"New J. Phys."},{"key":"ref_60","doi-asserted-by":"crossref","first-page":"1102","DOI":"10.1136\/jcp.36.10.1102","article-title":"Ozone killing action against bacterial and fungal species; microbiological testing of a domestic ozone generator","volume":"36","author":"Dyas","year":"1983","journal-title":"J. Clin. Pathol."},{"key":"ref_61","doi-asserted-by":"crossref","first-page":"1187","DOI":"10.1139\/m69-215","article-title":"Effects of ozone on the germination of fungus spores","volume":"15","author":"Hibben","year":"1969","journal-title":"Can. J. Microbiol."},{"key":"ref_62","doi-asserted-by":"crossref","first-page":"533","DOI":"10.1080\/15428110308984851","article-title":"Surface Germicidal Effects of Ozone for Microorganisms","volume":"64","author":"Li","year":"2003","journal-title":"Am. Ind. Hyg. Assoc."},{"key":"ref_63","doi-asserted-by":"crossref","first-page":"29","DOI":"10.1016\/j.atmosenv.2014.02.020","article-title":"Impact of HVAC filter on indoor air quality in terms of ozone removal and carbonyls generation","volume":"89","author":"Lin","year":"2014","journal-title":"Atmos. Environ."},{"key":"ref_64","doi-asserted-by":"crossref","first-page":"589","DOI":"10.1080\/00028899908984478","article-title":"Evaluation of Activated Carbon Filters for Removal of Ozone at the PPB Level","volume":"60","author":"Lee","year":"1999","journal-title":"Am. Ind. Hyg. Assoc. J."}],"container-title":["International Journal of Environmental Research and Public Health"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1660-4601\/19\/12\/7209\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T23:28:26Z","timestamp":1760138906000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1660-4601\/19\/12\/7209"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,6,12]]},"references-count":64,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2022,6]]}},"alternative-id":["ijerph19127209"],"URL":"https:\/\/doi.org\/10.3390\/ijerph19127209","relation":{},"ISSN":["1660-4601"],"issn-type":[{"value":"1660-4601","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,6,12]]}}}