SMELLPROCESS - Reduction of Emissions concerning Pelletsproduction

  • Pöllinger-Zierler, Barbara (Co-Investigator (CoI))

Project: Research project

Project Details


Goal of this project is the characterization of emissions from wood pellets. A great variety of
volatile organic compounds (VOCs) is emitted from stored pellets. Recent works focused on
carbon monoxide (CO) emission and their release mechanisms in general. In cooperation with wood pellet producers the awareness towards the frequently
occurring smell problems emerged. As an example, malodors occasionally developed at the
customer’s site, which were characterized as “cat pee”. In these cases a complete substitution
of the pellets became necessary.
This project aims at several problems in practice:
• Characterization of different raw materials (splinters, chips, chaff) and types of wood
(e.g. spruce, pine, fir) and the quality of the produced pellets
• Identification of VOCs in the raw material and in pellets with and without off-flavour
• Measurement of CO in pellets with and without malodors
• Analysis and exact determination of single VOCs, which are carrying malodors and
subsequent comparison to reference samples
• Comparison between pellets from industrial practice and laboratory presses
• Causal research for malodors in industry with pelletizing experiments in the laboratory
• Investigation of microorganisms which could be responsible for malodors due to
production of secondary metabolites
• Extensive characterization of malodors with combined methods of instrumental analytics
and human sensor technology as well as gas chromatography-olfactometry (GC-O)
• Implementation of the obtained results in close cooperation with producers and retailers
Effective start/end date1/09/1531/08/16