multistage process to convert c1 carbon source into an end product, multistage system, and multistage biological process to convert co to ethanol.

摘要

These are multistage biological processes and systems for converting a carbon source c1 into desired end products. The processes comprise dividing a gas-containing substrate in parallel between multiple stages of bioreactor. successively feeds the liquid products in series from a first bioreactor stage to upstream bioreactor stages. Operation can be simplified by avoiding the requirement for separation and recycling of microorganism at each stage. Furthermore, the mass transfer of vapor and general liquid to the combined stages is very favorable, which leads to high end product productivity with low by-product metabolite productivity in comparison.