The invention aims at providing a method for improving
fermentation efficiency of anaerobic qi-eating microorganisms. The method for improving the
fermentation efficiency of the anaerobic qi-eating microorganisms comprises the following steps: firstly carrying out
filtration interception on an anaerobic qi-eating
microorganism bacterial liquid in a
fermentation system by virtue of a hollow
cellulose membrane, then carrying out back flushing by virtue of a culture medium, and carrying out fermentation on intercepted thalli again. The method for improving the fermentation efficiency of the anaerobic qi-eating microorganisms has the advantages that
interconnection between a fermentation tank and a hollow
cellulose membrane component is realized in a gaseous fermentation process of the anaerobic qi-eating microorganisms, so that fermentation liquor circulates between the inner cavity of the hollow
cellulose membrane and the fermentation tank; meanwhile, a
peristaltic pump connected with the outer wall of the hollow cellulose membrane component is used for pumping and drainage, realizing suction
filtration on the fermentation liquor and intercepting the thalli, then a fresh culture medium is used for washing the thalli adhered in the cavity of the hollow cellulose membrane into the fermentation tank, and repeated and
continuous fermentation is carried out; and the method for improving the fermentation efficiency of the anaerobic qi-eating microorganisms can be used for improving
biomass accumulation of anaerobic qi-eating
clostridia in the gaseous fermentation process and effectively improving yield of ethyl
alcohol, butyl
alcohol and hexyl
alcohol which are produced by utilizing synthesis gas.