Dr.-Ing.  Peter Bächler

Dr.-Ing. Peter Bächler

  • Institut für Mechanische Verfahrenstechnik und Mechanik
    Karlsruher Institut für Technologie (KIT)
    Geb. 30.70
    Straße am Forum 8
    D-76131 Karlsruhe

Research Topic

Emission of Nanoparticles and their impact on Ambient Air Quality

The handling and separation of nanoparticles plays an important role in various technical processes. In the context of gas cleaning applications in power plants, nanoparticles (e.g. ash and soot) are generated during combustion processes and can be separated using electrostatic precipitators or baghouse filters. However, particle emissions are only monitored on the basis of gravimetric total dust concentrations (e.g. WGC-BREF) where even a high number of nanoparticles does not contribute significantly to the particle emission due to their small particle size. The mitigation potential of gas-cleaning technologies and the real emission of nanoparticles of industrial processes has not been investigated in detail.

Figure: Clean gas side of a baghouse filter and sampling probes

For small-scale combustion processes (e.g., domestic heating systems for houses or furnaces according to 1. BImSchV), gas cleaning technologies are only rarely applied and the exhaust is led unfiltered into the environment. The government-official limit values for particle emissions are also based on total mass concentrations that are not size-resolved and do not represent the actual emissions of potentially harmful (ultrafine) nanoparticles. This can contribute significantly to air pollution with ultrafine particles. Monitoring of ultrafine particles is becoming increasingly relevant in the context of the revision of the EU Ambient Air Quality Directive.

Figure: Temporally resolved profile of the UFP-concentration in a residential area

This research project deals with the mitigation of nanoparticle emissions in gas cleaning processes and the measurement of ultrafine particles in ambient air performing stationary and mobile indicative measurements. An important aspect of this work is the use of modern aerosol measurement technology.

                                 

Bachelor and Master Theses
Title Type Time
Publications
Title Authors Source

P. Bächler, F. Weis, S. Kohler, A. Dittler

Gefahrstoffe, 2024, 84, 01-02, 15-22, https://doi.org/10.37544/0949-8036-2024-01-02-17

P. Bächler, J. Meyer, R. Ligotski, P. Krug, A. Dittler

Process Safety and Environmental Protection, 2024, https://doi.org/10.1016/j.psep.2024.02.013 (open access)

P. Bächler, J. Meyer, A. Dittler

Chemical Engineering & Technology, 2024, 47, https://doi.org/10.1002/ceat.202300409 (open access)

P. Bächler, J. Meyer, A. Dittler

Chemical Engineering & Technology, 2023, 46, https://doi.org/10.1002/ceat.202300080 (open access)

P. Bächler, J. Meyer, A. Dittler

Chemie Ingenieur Technik, 2023, 95, No. 1-2, https://doi.org/10.1002/cite.202200116 (open access)

C.R. de Lacerda, P. Bächler, A.D. Schwarz, R. Sartim, M.L. Aguiar, A. Dittler

Chemical Engineering & Technology, 2022, 45, No. 7, 1354-1362, https://doi.org/10.1002/ceat.202200132

P. Bächler, V. Löschner, J. Meyer, A. Dittler

Process Safety and Environmental Protection, 2022, 160, 411-423, https://doi.org/10.1016/j.psep.2022.02.005

P. Bächler, J. Meyer, A. Dittler

Aerosol Science and Technology, 2022, Vol. 56, No. 4, 394-402, https://doi.org/10.1080/02786826.2022.2027335

P. Bächler, T.K. Müller, T. Warth, T. Yildiz, A. Dittler

Atmospheric Pollution Research, 2021, 12, 101059, https://doi.org/10.1016/j.apr.2021.101059 (open access)

P. Bächler, J. Szabadi, J. Meyer, A. Dittler

Journal of Aerosol Science, 2020, 150, 105644, https://doi.org/10.1016/j.jaerosci.2020.105644 (open access)

P. Bächler, J. Meyer, A. Dittler

Gefahrstoffe Reinhaltung der Luft 79, 2019, 79, Nr. 11-12, 443-450

Conference Contributions
Title Conference Authors

14th World Filtration Congress

Bächler, P., Meyer, J., Ligotski, R., Krug, P., Dittler, A.

Jahrestreffen der DECHEMA-Fachgruppen Aerosoltechnik (AT), Gasreinigung (GAS), Mehrphasenströmung (MPH) und Partikelmesstechnik (PMT)

P. Bächler, J. Meyer, A. Dittler

FILTECH 2023, The Filtration Event

P. Bächler, J. Meyer, A. Dittler

Jahrestreffen der ProcessNet-Fachgruppen Abfallbehandlung und Wertstoffrückgewinnung, Energieverfahrenstechnik, Gasreinigung, Hochtemperaturtechnik, Rohstoffe

P. Bächler, J. Meyer, A. Dittler

FILTECH 2022, The Filtration Event

P. Bächler, J. Meyer, A. Dittler

AFS FILTCON 2021

P. Bächler, V. Löschner, J. Meyer, A. Dittler

AFS FILTCON 2021

V. Löschner, P. Bächler, J. Meyer, A. Dittler

Jahrestreffen der ProcessNet-Fachgruppen Gasreinigung und Partikelmesstechnik 2021

P. Bächler, V. Löschner, J. Meyer, A. Dittler

Online Industrieworkshop: „Digitalisierung in der Trenntechnik“

P. Bächler, J. Meyer, A. Dittler

Jahrestreffen der ProcessNet-Fachgruppen Computational Fluid Dynamics und Gasreinigung

P. Bächler, J. Szabadi, J. Meyer, A. Dittler

FILTECH 2019 - The Filtration Event

P. Bächler, J. Meyer, A. Dittler

Jahrestreffen der ProcessNet-Fachgruppen Mechanische Flüssigkeitsabtrennung und Gasreinigung

P. Bächler, A. D. Schwarz, J. Meyer, A. Dittler