A PROCESS FOR CARRYING OUT MICROBIOLOGICAL FERMENTATIONS IN A DEVICE COMPRISING A FIXED SYSTEM OF AN OPEN CELL FOAM AS WELL AS A DEVICE FOR CARRYING OUT SUCH PROCESSES

摘要

A process for carrying out micro-biological fermentations, wherein a nutrient liquid and, if necessary, gases are passed through a fixed system of open cell polyurethane foam units, which system comprises at least two adjacent foam layers (1) each having a flat main surface (2) and an embossed main surface, (3) wherein in the subsequent layers (1) said embossed surface (3) of a foam layer (1) is positioned against the flat surface (2) of the adjacent foam layer (1).