abstract |
The present invention relates generally to a process for producing products, in particular alcohols, by microbial fermentation. In particular, the present invention relates to a method for increasing the efficacy of fermentation by providing a process for producing a treated permeate which is used to treat the fermented broth and then pass it back to the bioreactor. The present invention provides a method of treating permeants producing at least one gaseous product to be used in at least one step of a fermentation process using at least one processing step. |