Fig. 13: Assessment of the permutations of the two process routes.

Assessment of the permutations of the two process routes (R1, R2) and the downstream concepts (DIST-AQ, DIST-ORG, EXT-DIST) for the enzymatically synthesized products (acetoin, 2,3-BDO). The process concepts were evaluated via specific energy demand and overall yield in a Pareto plot, including the benchmark process as reference. R2.DIST-ORG is the most favorable concept of the permutation due to the highest overall yield and the lowest specific energy demand, but still is less efficient the the benchmark process.