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The state of knowledge on the behavior of carbon fiber reinforced polymers (CFRP) during thermal waste treatment is low. Technical problems regarding the handling, the exhaust gas cleaning and possible health risks due to contact with treatment residues were already reported in individual studies, however.

In the course of the project, the state of knowledge on the behavior of carbon fibers in thermal processes is to be improved. The investigation will involve the process parameters and the residue composition of the CFRP waste combustion resulting from different thermal waste treatments. For that purpose, tests will be conducted in experimental plants on a laboratory scale and in three industrial faculties (a domestic and a hazardous waste incineration plant as well as a cement plant).

Within the preliminary examinations, the reaction of CFRP during thermal treatment and the effects on the structure and fate of carbon fibers will be determined. The large-scale experiments will focus on combustion residues and emission measurements in the exhaust gas. These would allow an assessment of the different processes regarding their suitability for energy recovery and the preparation for the recovery of CFRP waste, respectively. To guarantee test conditions, selected test materials will be inserted into incineration plants.

Furthermore, tests on the recycling on CFRP will be performed on laboratory scale. To this end, the compound will be subjected to solvolysis and the fibers recovered by mechanical processing. In conclusion, recommended actions will be extrapolated.

Being part of a project consortium, this project will be carried out under the direction of TEER. Project partners are the Institute for Chemical Technology and Polymer Chemistry at the Karlsruhe Institute of Technology, the Professorship Energieverfahrenstechnik at the Institute Verfahrenstechnik und Umwelttechnik (EVT) of the Dresden University of Technology, the Institute for Interdisziplinäre Innovationen – Partikeltechnologie und Rohstoffinnovationen at the Technische Hochschule Nürnberg

(iii-THN) as well as the Verein Deutscher Zementwerke e.V. (VDZ). The project is supported by the corporations MARTIN GmbH, HeidelbergCement AG and Indaver Deutschland GmbH.

The project is financed within the departmental research framework of the Federal Ministry for the Environment, Nature Conservation, Building and Nuclear Safety.

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