CovidV1, Main, Exploration, bibRecord, 001077

Capture of viral particles in soft X-ray-enhanced corona systems: Charge distribution and transport characteristics

Identifieur interne : 001077 ( Main/Exploration ); précédent : 001076; suivant : 001078

Capture of viral particles in soft X-ray-enhanced corona systems: Charge distribution and transport characteristics

Auteurs : Christopher J. Jr Hogan [États-Unis] ; Myong-Hwa Lee [États-Unis] ; Pratim Biswas [États-Unis]

Source :

Aerosol science and technology [ 0278-6826 ] ; 2004.

RBID : Pascal:04-0419697

Descripteurs français

Pascal (Inist)
- Capture, Particule, Rayon X mou, Distribution, Propriété transport, Nanoparticule, Bactériophage.

English descriptors

KwdEn :
- Capture, Distribution, Nanoparticle, Particle, Phage, Soft X ray, Transport properties.

Abstract

The charge distribution of airborne MS2 bacteriophage nanoparticles and the efficiency of electrical-mobility-based capture mechanisms with bipolar charging were studied. MS2 virions form large agglomerated particles in a suspension. The average charge on airborne MS2 virions can be as high as one unit charge (negatively charged). The application of both soft X-ray irradiation and alpha rays from a Po-210 bipolar charger was shown to not only reduce the average charge on MS2 virion particles but also partially fragment the larger MS2 virion agglomerates, thereby increasing the number of ultrafine MS2 virion particles. A cylindrical electrostatic precipitator with a mounted soft X-ray emitter was used to determine the effectiveness of electrical capture methods for virus particles. At low applied voltages, it was found that the capture efficiency of ultrafine virus particles can be increased by applying in situ soft X-ray irradiation with electrostatic precipitation. It has also been shown that in the presence of both a positive and negative corona, virus particles are readily captured with log removal values exceeding 4. The unit developed and demonstrated in this work is a compact, low-pressure drop system that can be readily mounted in ventilation ducts or air supply systems to remove ultrafine particles such as viruses.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000054
to stream PascalFrancis, to step Curation: 000005
to stream PascalFrancis, to step Checkpoint: 000054
to stream Main, to step Merge: 001088
to stream Main, to step Curation: 001077

Le document en format XML

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<front><div type="abstract" xml:lang="en">The charge distribution of airborne MS2 bacteriophage nanoparticles and the efficiency of electrical-mobility-based capture mechanisms with bipolar charging were studied. MS2 virions form large agglomerated particles in a suspension. The average charge on airborne MS2 virions can be as high as one unit charge (negatively charged). The application of both soft X-ray irradiation and alpha rays from a Po-210 bipolar charger was shown to not only reduce the average charge on MS2 virion particles but also partially fragment the larger MS2 virion agglomerates, thereby increasing the number of ultrafine MS2 virion particles. A cylindrical electrostatic precipitator with a mounted soft X-ray emitter was used to determine the effectiveness of electrical capture methods for virus particles. At low applied voltages, it was found that the capture efficiency of ultrafine virus particles can be increased by applying in situ soft X-ray irradiation with electrostatic precipitation. It has also been shown that in the presence of both a positive and negative corona, virus particles are readily captured with log removal values exceeding 4. The unit developed and demonstrated in this work is a compact, low-pressure drop system that can be readily mounted in ventilation ducts or air supply systems to remove ultrafine particles such as viruses.</div>
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Capture of viral particles in soft X-ray-enhanced corona systems: Charge distribution and transport characteristics

Capture of viral particles in soft X-ray-enhanced corona systems: Charge distribution and transport characteristics

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri