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Treatment of barn exhaust air by photocatalytic cleaning systems

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Thüringer Ministerium für Landwirtschaft, Forsten, Umwelt und Naturschutz

Federal State



Beethovenstraße 3
99096 Erfurt

Website: External link to the authority

Project Title

Treatment of barn exhaust air by photocatalytic cleaning systems

Project description

The increasing demand for animal food in Germany and worldwide leads to an intensification of farm animal husbandry. The stable housing is associated with emissions, which are transported via ventilation systems in a very concentrated form to the outside. The main airborne pollutant emissions can be classified as chemical and biological pollutants. According to the TA Luft in the 2015 amendment, there are emission limits for the captured air from stabling facilities with regard to dust and ammonia. Other relevant compounds, such as nitrous oxide and methane as climate-damaging gases are not or not sufficiently removed with conventional exhaust air treatment plants. The legal requirements on bioaerosols for limiting microbial emissions become binding. In the planned project, the photocatalytic oxidation in relation to the reduction of all emission-relevant substances, including sanitation, will be developed for the first time and tested on a laboratory scale. For this an adequate online measuring technique with telemetric data transmission has to be developed for the later demonstration plant.

Final report

Results and the Final report will be found here, as soon as the project is completed.

Results focusing on practice orientation

The goal of the project (laboratory model) is to develop the fundamentals for technically and microbiologically safe, modularly retrofittable and upgradable stable air systems based on photocatalysis. Thus, in contrast to other methods of exhaust air treatment climate-damaging exhaust air components can be significantly reduced. In contrast to systems according to the prior art, no residues or wastewater accumulate, so that there is no additional disposal or treatment problem. The planned novel process and the procedural implementation should be cost-effective and robust. With a hygienic and chemically toxicologically safe exhaust air treatment, agricultural businesses as well as the environment (in the broadest sense) can benefit directly, in the medium and long term. The requested project is up to date and extensive with the growing legal requirements.

Key words

  • Farming practice/activity
  • Animal husbandry

Main funding source

Rural development 2014-2020 for Operational Groups (in the sense of Art 56 of Reg.1305/2013)

OG contact information

Materialforschungs- und prüfanstalt an der Bauhaus-Universität Weimar (MFPA)
Dr. rer. nat. Peter Kulle
Coudraystraße 9
99423 Weimar

Phone: +49 3643 564 352

Email: peter.kulle@mfpa.de

Type of OG partners

  • Farmer
  • Farmer
  • Farmer

Begin of project


Project status


Total budget applied for in EUR






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