Generally, when we compare environmental impacts from production of CNC61 and CNC64, which are CNC materials for different end-use applications, CNC61 exhibits lower or similar environmental impacts due to the higher process yield. This is correct for both scenarios with and without acid recycling, see Figure . Although we always aim to minimize environmental impact of a material, we need to keep in mind that the overall impact will ultimately depend on material's end-use application. Based on the obtained results, we can conclude that introduction of acid recycling within CNC production through evaporation technology results in higher resources consumption and provides little environmental benefit. Partial acid recycling could be a solution for an improvement of environmental impacts between no recycling and full acid recycling scenarios.