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Abstract

An integrated process for producing polyhydroxyalkanoates and bioethanol including:

(a) feeding a part of the lignocellulosic hydrolyzate to a first fermentation device in the presence of one microorganism capable of using sugars with six carbon atoms and organic acids, obtaining a first fermentation broth;(b) subjecting the first broth to separation obtaining an aqueous suspension of cellular biomass having one polyhydroxyalkanoate and an aqueous phase having sugars with five carbon atoms in a quantity greater than or equal to 10 g/L;(c) optionally, feeding a part of the aqueous phase from step (b), to a second fermentation device, obtaining a second fermentation broth (inoculum);(d) feeding at least a part of the aqueous phase from step (b) and, optionally, the second broth and/or at least a part of lignocellulosic hydrolyzate, to a third fermentation device, obtaining a third fermentation broth; and(e) subjecting the third broth to separation obtaining bioethanol.

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First Claim