Effect of acetate and butyrate cycling on maximizing fermentative production of 1,3 propanediol from industrial waste glycerol and soil based bacterial innocula

摘要

The ever increasing demand for fuel has made the biodiesel industry an attractive alternative energy source. However this also leads, simultaneously, to a large glycerol production, which though not hazardous per se, has been described as the wastebasket of the biodiesel process. [1]. The bio-fermentation of crude glycerol to 1, 3-propanediol as a value added product gives a recourse to capitalizing on the current over capacity of glycerol. The differential in the price between glycerol and 1,3 propanediol makes this an attractive economic proposition.