Aerosol Workshop

9.00-9.45: 

Aerosol particles: formation and interaction with water vapor

By Prof. Merete Bilde, Department of Chemistry, Aarhus University

Abstract: Aerosol particles are nano- and micro-particles in the air. They affect human health, air quality and climate.  Aerosol particles are chemically complex particles containing organic as well as inorganic molecules. This talk will address formation and properties of air-borne nano- and microparticles in the atmosphere. In particular, their interaction with water vapor.  

10:00-10.45:

Possibilities and limitations of low-cost PM sensors

By Christof Asbach, Dr. Ing. (Lecturer, Unit Head Air Quality and Filtration), Institut für Energie- und Umwelttechnik e. V. (IUTA), Department for Air Quality & Filtration, Duisburg, Germany.

Abstract: A large variety of low cost sensors for airborne dust concentrations have become available over the last few years. These sensors offer numerous new possibilities to researchers, occupational hygienists as well as the general public through citizen science activities. In order to elucidate possibilities and limitations, we studied in detail the response of different sensor types for application in ambient and workplace PM concentration measurements. All sensors have undergone a thorough lab study using a variety of test aerosols, representing a wide range of typical size distributions and refractive indices. In addition, ambient and workplace measurements were carried out. The results show that under controlled laboratory conditions, the sensor output can be highly correlated with reference concentrations. However, in both workplace as well as atmospheric measurements, the sensor performance was biased by various influencing factors. Most of all, the relative humidity caused the main discrepancies. In extreme cases, the ambient PM10 concentration was overestimated by a factor of up to ten. The presentation will provide an overview of existing low cost sensors and discuss their possibilities and limitations for different applications.

11.00-11.20:

DigiMON – Smart monitoring of infrastructure and occupational environment

By Ismo Kalevi Koponen, ik@force.dk
Force.dk

Abstract: Infrastructural building projects such as Fehmarnbelt connection, new Storstrømsbro and other similar large construction projects have a huge potential to drive increased digitalization infrastructure solutions with positive social impacts. The potential is linked to e.g. rapid development in sensor systems, Internet of Things, Big Data and advanced data analytics that creates the opportunity for the development of smarter and more cost-effective solutions. This applies both in terms of being able to predict and plan infrastructural maintenance and through emissions monitoring, to reduce the negative effects on people and nature. FORCE and the Alexandra Institute together have unique complementary competencies and have in activity plan established a strategic collaboration around development and demonstration of new solutions for smart monitoring of infrastructure facilities with the Fehmarnbelt as a starting point. Here we present the ideas and the progress of two work packages; Smart monitoring of gasses and particles in the working environment and monitoring of dust in the surrounding environment near larger construction sites.

11.30-12.00:

Aerosol measurement equipment demonstration

By Ana Sofia Godinho da Fonseca, agf@nfa.dk
The National Research Center for the Working Environment (NFA) in Denmark.

Abstract: Demonstration with hands-on possibilities of aerosol measurement equipment.

If you are interested in this, you may also want to join 
Anders Brostrøms PhD defence 10th Dec 13.00

 

Time

Wed 11 Dec 19
9:00 - 12:00

Organizer

DTU Nanolab

Where

DTU Nanolab Building 347 Seminar room 061