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Content archived on 2019-03-12

SCREENING OF CELLULOLYTIC ANAEROBIC BACTERIA, CELLULOLYTIC CONFERMENTATIONS WITH METHANIC AND ACETOBUTYLIC FERMENTATION (IN THE FRAMEWORK OF THE RECYCLING OF CELLULOSIC URBAN AND INDUSTRIAL WASTES).(SUPP. AGRE. CONTRACT 091).

Objective



CELLULOSE IS THE MOST ABUNDANT ORGANIC COMPOUND IN WASTES FROM FOREST PRODUCTS, AGRICULTURE, FRUITS AND VEGETABLES. THE BEST UTILISATION OF THIS CELLULOSE COULD BE OBTAINED BY FERMENTATION TO PRODUCE CH4, H2, ALCOHOLS, SOLVENTS... IN THIS PROCESS, ANAEROBIC CELLULOLYTIC BACTERIA PLAY AN ESSENTIAL FUNCTION, UNFORTUNATELY LITTLE INFORMATION IS AVAILABLE ABOUT THESE BACTERIA. ONLY TWO ANAEROBIC CELLULOLYTIC BACTERIA HAVE BEEN ISOLATED: CLOSTRIDIUM CELLOBIOPARUM AND CLOSTRIDIUM THERMOCELLUM, SO IT IS A NECCESSITY TO SCREEN THESE BACTERIA, TO DETERMINE THEIR PROPERTIES AND TO SELECT THE SPECIES THAT MAY BE THE MOST ACTIVE. FROM THESE STUDIES IT WILL BE POSSIBLE TO FIND OPTIMUM FERMENTATION CONDITIONS. IN OUR LABORATORY A NEW SPECIES OF AN ANAEROBIC THERMOPHILE CELLULOLYTIC BACTERIA WAS ISOLATED; ITS ACTION ON CELLULOSIC SUBSTRATES IS UNDER INVESTIGATION. NOW WORK IS UNDERTAKEN TO ISOLATE CELLULOLYTIC, MESOPHILIC CLOSTRIDIA WITH PURE ISOLATES, STUDIED COMBINAISONS OF CELLULOLYTIC BACTERIA AND METHANOGENIC BACTERIA OR ACETONE-BUTANOL PRODUCING BACTERIA WILL BE UNDER INVESTIGATION. THIS APPROACH SHOULD PROVIDE BASIC INFORMATION FOR THE EXPLOITATION OF CELLULOSE AS A SOURCE OF FUEL AND CHEMICAL FEEDSTOCK.

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Coordinator

Université de Nancy I (Université Henri Poincaré)
EU contribution
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Address
INSTITUT NATIONAL POLYTECHNIQUE DE LORRAINE (INLP) 24 RUE LIONNAIS
54013 NANCY
France

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