The project

Safe classrooms

The project "Air cleaning in the classroom" is a research project that involves building physics and virology for air purification in classrooms.

Air cleaning is a scientifically proven method to significantly reduce aerosol concentrations in indoor spaces and thus the risk of SARS-CoV-2 contamination, provided that good equipment with a sufficiently high capacity is used. That is why we want to effectively investigate how much air cleaning can reduce infections.

An additional final goal of this project is that we hope to end the mandatory face masks in classrooms, on the basis that good air purification is used and accepted by the government.

For the large-scale research project, air purifiers are carefully being selected, if necessary, analysed in a laboratory test, and then installed in the classrooms. Measurements are taken of temperature, humidity, aerosol concentrations, virus load in the air, CO2, and possibly the virus captured by the air purifier.

In addition, records are kept of ventilation through open windows and doors and of the number of infections in the classrooms.

Masks in Classroom

The core team


prof. dr. ir. Bert Blocken

TUe, The Netherlands

KU Leuven, Belgium

Leen Peteers profile picture.jpg

dr. ir. Leen Peeters

Th!nk E, Belgium


prof. dr. Marc Van Ranst

KU Leuven, Belgium

The Advisory Board

Committee Chairs

Caroline Gennez

Flemish Member of Parliament
Chairwoman University Association Brussels


Thierry Marchal

Program director Healthcare Solutions, Ansys

Secretary General Avicenna Alliance

(In alphabetical order by last name)