Boreskov Institute of Catalysis SB RAS, Novosibirsk, Russia

PP-39FERMENTATION PROCESSES OF FREE AND IMMOBILIZED CELLSOF CLOSTRIDIUM ACETOBUTYLICUM ON DIFFERENT MEDIANikolskaya A.B. 1 , Efremenko E.N. 1,2 , Varfolomeev S.D. 1,21 Institute of Biochemical Physics RAS, Moscow, anickolskaya@mail.ru2 Chemical Enzymology Department, Chemical Faculty MSU, MoscowFermentation processes using anaerobic microorganisms provide a promisingpath for converting biomass and agricultural wastes into fuels. Acetone-butanolethanolfermentation with the strict anaerobic bacterium Clostridium acetobutylicumwas one of the most extended processes in industry but its application was limited bylow yields and product concentrations. However this process allows to produce oneof the most important biofuels today – hydrogen and butanol – simultaneously. Fromthis point of view it is interesting to develop methods for increasing the productivity ofClostridium acetobutylicum cells. One of methods is carrying out the cellimmobilization of microorganisms, which allows to create and save high cellconcentrations in reactor, provides continuous operation stability of biocatalyticsystem and reduces power inputs for process in general. In this investigation theimmobilization of cells Clostridium acetobutylicum into cryogel of poly(vinyl alcohol)was carried out and fermentation processes of different media were studied.Acknowledgements. The authors gratefully acknowledge financial support from program offundamental investigations of Presidium RAS «Chemical aspects of energetics».128