About: Removal of fine and ultrafine particles from indoor air environments by the unipolar ion emission

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About: Removal of fine and ultrafine particles from indoor air environments by the unipolar ion emission Goto Sponge NotDistinct Permalink

An Entity of Type : schema:ScholarlyArticle, within Data Space : wasabi.inria.fr associated with source document(s)

Attributes	Values
type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
has title	Removal of fine and ultrafine particles from indoor air environments by the unipolar ion emission
Creator	Yermakov, Mikhail Grinshpun, Sergey Lee, Byung
topic	covid:45fbd8208495f2995624a522695571c9c5a36559#this
Source	Elsevier; Medline; PMC
abstract	The continuous emission of unipolar ions was evaluated in order to determine its ability to remove fine and ultrafine particles from indoor air environments. The evolution of the indoor aerosol concentration and particle size distribution was measured in real time with the ELPI in a room-size (24.3 m(3)) test chamber where the ion emitter was operating. After the results were compared with the natural decay, the air cleaning factor was determined. The particle aerodynamic size range of ∼0.04–2 μm was targeted because it represents many bioaerosol agents that cause emerging diseases, as well as those that can be used for biological warfare or in the event of bioterrorism. The particle electric charge distribution (also measured in the test chamber with the ELPI) was rapidly affected by the ion emission. It was concluded that the corona discharge ion emitters (either positive or negative), which are capable of creating an ion density of 10(5)–10(6) e(±) cm(−3), can be efficient in controlling fine and ultrafine aerosol pollutants in indoor air environments, such as a typical office or residential room. At a high ion emission rate, the particle mobility becomes sufficient so that the particle migration results in their deposition on the walls and other indoor surfaces. Within the tested ranges of the particle size and ion density, the particles were charged primarily due to the diffusion charging mechanism. The particle removal efficiency was not significantly affected by the particle size, while it increased with increasing ion emission rate and the time of emission. The performance characteristics of three commercially available ionic air purifiers, which produce unipolar ions by corona discharge at relatively high emission rates, were evaluated. A 30-minute operation of the most powerful device among those tested resulted in the removal of about 97% of 0.1 μm particles and about 95% of 1 μm particles from the air in addition to the natural decay effect.
has issue date	2004-08-12(xsd:dateTime)
bibo:doi	10.1016/j.atmosenv.2004.06.010
bibo:pmid	32834730
has license	no-cc
sha1sum (hex)	45fbd8208495f2995624a522695571c9c5a36559
schema:url	https://doi.org/10.1016/j.atmosenv.2004.06.010
resource representing a document's title	Removal of fine and ultrafine particles from indoor air environments by the unipolar ion emission
has PubMed Central identifier	PMC7319258
has PubMed identifier	32834730
schema:publication	Atmos Environ (1994)
resource representing a document's body	covid:45fbd8208495f2995624a522695571c9c5a36559#body_text
is http://vocab.deri.ie/void#inDataset of	proxy:http/ns.inria.fr/covid19/45fbd8208495f2995624a522695571c9c5a36559
is schema:about of	named entity 'ENVIRONMENTS' named entity 'size' named entity 'pollutants' named entity 'ionic air purifiers' named entity 'particles' named entity 'ions' named entity 'aerosol' named entity 'ultrafine particles' named entity 'emission' named entity 'test' named entity 'ion' named entity 'particle' named entity 'ultrafine particles' named entity 'CONTINUOUS' named entity 'CHARGE DISTRIBUTION' named entity 'SIZE' named entity 'AIR CLEANING' named entity 'AFFECTED' named entity 'FINE' named entity '240' named entity 'CONCENTRATION' named entity 'ULTRAFINE' named entity 'EFFECT' named entity 'TEST' named entity 'DUE TO' named entity 'POLLUTANTS' named entity 'CAUSE' named entity 'COMPARED' named entity 'EFFICIENCY' named entity 'CAPABLE' named entity 'SUFFICIENT' named entity 'RESIDENTIAL' named entity 'UNIPOLAR' named entity 'BIOLOGICAL WARFARE' named entity 'PARTICLE' named entity 'REAL TIME' named entity 'ELECTRIC CHARGE' named entity 'DEPOSITION' named entity 'WHERE' named entity 'DETERMINE' named entity 'TIME' named entity 'PARTICLES' named entity 'MEASURED' named entity 'DENSITY' named entity 'AIR' named entity 'OFFICE' named entity 'EMITTER' named entity 'FINE' named entity 'PARTICLES' named entity 'MINUTE' named entity 'MOBILITY' named entity 'PARTICLE SIZE' named entity 'RATES' named entity 'AEROSOL' named entity 'POSITIVE' named entity 'ELPI' named entity 'ITS' named entity 'EMISSION' named entity 'HIGH' named entity 'BIOAEROSOL' named entity 'AVAILABLE' named entity 'EVOLUTION' named entity 'RESULTS' named entity 'PERFORMANCE' named entity 'DEVICE' named entity 'INCREASED' named entity 'INCREASING' named entity 'DECAY' named entity '803' named entity 'AIR' named entity 'ULTRAFINE' named entity 'EMISSION' named entity 'CHARGING' named entity 'REMOVAL' named entity '0.1' named entity 'DIFFUSION' named entity 'INDOOR'

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