In the concept of the circular bioeconomy, biotechnological processes are seen as a great opportunity and offering huge potential for producing bio-based chemicals such as organic acids, which can be further processed in the chemical industry to produce bioplastics, among other things. Raw material costs have a significant impact on the economic viability of bioprocesses, making the use of residual materials increasingly important. However, this cost advantage is offset by the complex and changing composition of these materials, which poses a number of challenges in terms of their handling, pre-treatment and processing, and ultimately their use as substrates in bioprocesses.
The production residues and wastewater generated during the separation and purification of fermentation products represent a critical aspect for current processes in the long term. For these reasons, it is essential to tap into alternative raw material sources and residual materials, make the overall process more efficient (on an industrial scale!) and develop new downstream processes for product separation and purification.