The project meeting of year 3 will be held on the 4th of September at the facilities of Pure Air Solutions in Zwolle (The Netherlands). The project meeting is included in the summer school on “Air Bio Treatment” that will take place during the first week of September together with the researchers of the TrainonSEC project. During this interesting week, researchers will share and discuss the work that has been carried out during the first three years of the project, to plan the research to be done during the fourth year, and as well as to exchange knowledge with the research performed in the TrainonSEC project.