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Projects & Publications

Projects & Publications

 

 

News

 

Nanofiltration Combined with Laminar Vertical Flow to Minimize Virus Infection Risk

New Publication

Lift cabs are hotspots for the transmission of viruses and bacteria. But it doesn't have to stay that way. NCA has the solution.

A feasibility study funded by the Hightech Zentrum Aargau HTZ showed that the NanoCleanAir system reliably eliminates aerosols in offices, doctors' surgeries, classrooms, lifts and offices. «Interested commercial enterprises,» says Mayer, «are welcome to contact us.» Contact us!

Article in the magazine 2022, MISSION INNOVATION, HTZ (in German)

Baublatt, 13.12.2021
  • News

NanoCleanAir in the press

NZZ am Sonntag, article (pdf, in German) 

NanoCleanAir in the press

Aargauer Zeitung online,
Article (pdf, in German)

Archive

  • Nanofiltration Combined with Laminar Vertical Flow to Minimize Virus Infection Risk. European filter trade fair, March 8-10, 2022, Cologne, Germany (pdf)
  • A Versatile Filter Test System to Assess Removal Efficiency for Viruses in Aerosols. Aerosol Air Qual. Res. 21, 210224 (2021). https://doi.org/10.4209/aaqr.210224 (open access article)
  • Workshop Virenfilter BAFU UTF Projekt 655.03.21, 20.10.2021.
    Representatives of 6 federal offices visit the school in Lenzburg to get on-site information about of the current status of the pilot project "Virus protection in classrooms".
    Agenda (pdf, in German)
  • NanoCleanAir in der Presse, 19.10.2021: Tages-Anzeiger online, Caricature on the front page (pdf)
  • NanoCleanAir in the press, 19.10.2021: Tages-Anzeiger online, Article (pdf, in German)
  • USA operates virus protection intensively in classrooms.
    25.02.2021, EPA webinar, report by Prof. em. Jan Czerwinski
  • Investigation of a typical aircraft recirculating air filter for nanoparticles and viruses.
    06.12.2020, NCA Report 04.1e/20 (pdf), Heinz Burtscher

Projects

Pilot project, classroom

Virus protection in classrooms

  • Prof. Dr. Heinz Burtscher, Institute for Sensor Technology and Electronics at FHNW Windisch, T. Rüggeberg und P. Specht

  • Further information

For a classroom at the Rudolf Steiner School in Lenzburg, a pilot system for virus protection was developed and installed in cooperation between NanoCleanAir (NCA) and the University of Applied Sciences, Northwestern Switzerland. The aim is to create a flow that is as vertical as possible upwards in the room in order to minimize the exchange of air between the learners. 

19.10.2022: Handover of the world's first classroom with highly efficient air purification of fine dust, viruses, bacteria and allergens to the Rudolf Steiner Sonderschule Lenzburg / AG.

Filter efficiency measurements with MS2 bacteriophages

  • Prof. Barbara Rothen-Rutishauser and Prof. Alke Fink
    Swiss NanoAnalytics, Adolphe Merkle Institute, University of Fribourg
  • Publication

The test system designed by the FHNW can be used to determine the filter efficiency of a virus model particle, the MS2 bacteriophage. For this purpose, the MS2 bacteriophages are nebulized in a stream of air and then collected before and after the filter. With this optimized approach, we were able to determine the filter efficiency for the NanoCleanAir®.

Filterprüfstand

Purification of contaminated air from nanoparticles and viruses

  • Prof. Dr. Heinz Burtscher, Institute for Sensor Technology and Electronics at FHNW Windisch
  • Further information

The concentration of soot particles in vehicle cabins is very high. To reduce this, a filter system called "Nanocleaner" was developed, which separates the particles with an efficiency of > 99%. The air coming into the cabin from outside is cleaned.

Publications

A.Mayer, J.Mayer, H.Burtscher, J.Czerwinski, Th.Lutz, R.Mayer; B.Rothen-Rutishauser; J.Frey; Chr.Lämmle, T.Rüggeberg, P.Specht (2022). Nanofiltration must be combined with laminar vertical flow to minimize virus infection risk (pdf). Proceeding for the WFC13, Oct. 6-9,2022, San Diego, USA.

Mayer A., Mayer J., Burtscher H., Czerwinski J., Lutz Th., Mayer R., Rothen-Rutishauser B., Frey J., Lämmle Chr., Rüggeberg T., Specht P. (2022). Nanofiltration Combined with Laminar Vertical Flow to Minimize Virus Infection Risk (pdf). Europäische Filtermesse, March 8-10, 2022, Cologne, Germany, www.filtech.de

Rüggeberg, T., Milosevic, A., Specht, P., Mayer, A., Frey, J., Petri-Fink, A., Burtscher, H., Rothen-Rutishauser, B. (2021). A Versatile Filter Test System to Assess Removal Efficiency for Viruses in Aerosols. Aerosol Air Qual. Res. 21, 210224. https://doi.org/10.4209/aaqr.210224

Burtscher H., Th. Lutz & A. Mayer (2019) A New Periodic Technical Inspection for Particle Emissions of Vehicles. Emission Control Sci. and Technol. 5(3), 279-287. DOI 10.1007/s40825-019-00128-z.
https://www.springerprofessional.de/a-new-periodic-technical-inspection-for-particle-emissions-of-ve/16930710

Burtscher H. (2020) Application of a Spark Discharge Generator for Production of Combustion-Like Aerosols. In 'Spark Ablation, Building Blocks for Nanotechnology', 1st Edition, Ed. Andreas Schmidt-Ott. Jenny Stanford Publishing.
https://www.routledge.com/Spark-Ablation-Building-Blocks-for-Nanotechnology/Schmidt-Ott/p/book/9789814800822

Mayer A., H Burtscher, S Loretz, M Kasper and J Czerwinski (2018) High air pollution in vehicle cabins due to traffic nanoparticle emission exposure and a solution for in-use vehicles. IOP Conf. Series: Materials Science and Engineering 421 (2018) 032018, doi:10.1088/1757-899X/421/3/032018.
https://iopscience.iop.org/article/10.1088/1757-899X/421/3/032018

Burtscher H.(2019) Feldmesstechnik für Aerosolpartikel. Proc. 14. Dresdner Sensorsymposium. 10.5162/14dss2019/1.3, https://www.ama-science.org/proceedings/listing/2768.
https://www.ama-science.org/proceedings/details/3506

Czerwinski, J.; Comte, P.; Engelmann, D.; Heeb, N.; Muñoz, M.; Bonsack, P.; Hensel, V.; Mayer, A.: PN-Emissions of Gasoline Cars MPI and Potentials of GPF. SAE Technical Paper 2018-01-0363, Detroit, April 2018. DOI:10.4271/2018-01-0363.

Czerwinski, J.; Comte, P.; Engelmann, D.; Bonsack, P.: Non-legislated emissions and PN of two passenger cars with gasoline-butanol blends. PTNSS Journal Combustion Engines. 2018, 172(1), 64-72. DOI:10.19206/CE-2018-108.

Czerwinski, J.; Comte, P.; Engelmann, D.; Mayer, A.; Lutz, Th.; Hensel, V.: Considerations of Periodical Technical Inspection of Vehicles with deNOx Systems. SAE Technical Paper 2019-01-0744, Detroit, April 2019. DOI:10.4271/2019-01-0744.

A.Mayer@nanocleanair.ch

NanoCleanAir GmbH
Fohrhölzlistrasse 14 b
CH-5443 Niederrohrdorf