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%0 Thesis
%A Harhues, Tobias
%T Process integration and intensification of electrochemical reactions for biomass valorization
%V 44
%I Rheinisch-Westfälische Technische Hochschule Aachen
%V Dissertation
%C Aachen
%M RWTH-2024-06302
%B Aachener Verfahrenstechnik series - AVT.CVT - chemical process engineering
%P 1 Online-Ressource : Illustrationen
%D 2024
%Z Veröffentlicht auf dem Publikationsserver der RWTH Aachen University
%Z Dissertation, Rheinisch-Westfälische Technische Hochschule Aachen, 2024
%X The consumption of fossil resources as the carbon feedstock for the chemical industry is a major source of the global CO2 emissions that can be counteracted by replacing fossil carbon with sustainable sources such as hemicellulosic biomass. However, the replacement requires novel processes and, in part, products that have been proposed with the concept of the biorefinery. Yet, these processes do not include electrochemical conversion methods, as research on electrochemical reactions has mostly been limited to the catalyst and reactor levels. Their implementation into process chains still needs to be demonstrated. This work aims to integrate electrochemical processes into two process chains to yield 2,5-furandicarboxylic acid (FDCA) and 2-butanone. It reveals the possibility of eradicating intermediate purification steps when integrating electrochemical conversion with the preceding chemocatalytic or microbial processes. Additionally, a structured approach towards paired electrolysis for biomass valorization is presented and implemented to combine the two reactions and show the potential to increase the energy efficiency of paired electrolysis. For the reduction of acetoin to 2-butanone, the fermentation supernatant from the microbial synthesis of acetoin was directly used as the electrolyte without intermediate purification. The pH in the electrochemical cell was adapted to the fermentation supernatant, which resulted in a yield of 45
%F PUB:(DE-HGF)11 ; PUB:(DE-HGF)3
%9 Dissertation / PhD ThesisBook
%R 10.18154/RWTH-2024-06302
%U https://publications.rwth-aachen.de/record/988599