High-performance inertial impaction filters for particulate matter removal

dc.contributor.authorZhang, Xiaoweien
dc.contributor.authorZhang, Weien
dc.contributor.authorYi, Mingqiangen
dc.contributor.authorWang, Yingjieen
dc.contributor.authorWang, Pengjunen
dc.contributor.authorXu, Junen
dc.contributor.authorNiu, Fengleien
dc.contributor.authorLin, Fengen
dc.contributor.departmentChemistryen
dc.date.accessioned2018-12-13T19:40:51Zen
dc.date.available2018-12-13T19:40:51Zen
dc.date.issued2018-03-19en
dc.description.abstractAirborne particulate matter (PM) is causing more and more serious air pollution and threatening the public health. However, existing air filter technologies with the easy-to-block manner can rarely meet the requirements of high-performance PM filters. Here we propose a conceptually new type of inertial impaction filters for rapidly high-efficiency PM removal. Under the airflow velocity of 8.0 m/s, the real inertial impaction filters show high PM removal efficiencies of up to 97.77 +/- 1.53% and 99.47 +/- 0.45% for PM2.5 and PM10, respectively. Compared with the traditional air filters reported previously, the inertia impaction filters exhibit extremely low pressure drop of 5-10 Pa and high quality factor (QF) values of 0.380 Pa-1 and 0.524 Pa-1 for PM2.5 and PM10, respectively. These greatly improved QF values are achieved through a series of inertial separation processes. The feature dimension of filtration channel is dozens of times larger than PM average size, which greatly decreases airflow resistance. Particularly, this inertial structure can be made of various types of materials, which shows great potential for low-cost fabrication of large-area devices. As a stand-alone device or incorporated with the existing PM air filter, this inertial impaction filter will bring great benefits to the public health.en
dc.description.notesThis work was supported by National Natural Science Foundation of China (NSFC) (61704094, 11635005, 61735008, 11774155, and 61474068), Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), and K. C. Wong Magna Fund in Ningbo University. We thank Dr. Paul Lum from Biomolecular Nano Center at University of California at Berkeley for the fabrications of inertia impaction filters.en
dc.description.sponsorshipNational Natural Science Foundation of China (NSFC) [61704094, 11635005, 61735008, 11774155, 61474068]; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD); K. C. Wong Magna Fund in Ningbo Universityen
dc.format.extent8 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1038/s41598-018-23257-xen
dc.identifier.issn2045-2322en
dc.identifier.other4757en
dc.identifier.pmid29555991en
dc.identifier.urihttp://hdl.handle.net/10919/86379en
dc.identifier.volume8en
dc.language.isoen_USen
dc.publisherSpringer Natureen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectefficient pm2.5 removalen
dc.subjectnanofiber air filtersen
dc.subjectaerosol-particlesen
dc.subjectfiltrationen
dc.subjectcollectionen
dc.subjectsampleren
dc.subjectpollutionen
dc.subjectdepositionen
dc.subjectcylindersen
dc.subjectmembranesen
dc.titleHigh-performance inertial impaction filters for particulate matter removalen
dc.title.serialScientific Reportsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
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