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  • Title: Photofermentative production of hydrogen and poly-β-hydroxybutyrate from dark fermentation products.
    Author: Luongo V, Ghimire A, Frunzo L, Fabbricino M, d'Antonio G, Pirozzi F, Esposito G.
    Journal: Bioresour Technol; 2017 Mar; 228():171-175. PubMed ID: 28063359.
    Abstract:
    The aim of this work is to investigate the hydrogen and poly-β-hydroxybutyrate (PHB) production during the photofermentative treatment of the effluent from a dark fermentation reactor fed with the organic fraction of municipal solid waste. Two different inocula, an adapted culture of Rhodobacter sphaeroides AV1b and a mixed consortium of purple non sulphur bacteria have been investigated under the same operational conditions. Different hydrogen productivities of 364 and 559NmL H2 L-1 were observed for the Rhodobacter sphaeroides and the mixed culture consortium tests, respectively: the consortium of PNSB resulted 1.5-fold more productive than the pure culture. On the other hand, Rhodobacter sphaeroides culture showed a higher PHB productivity (155mg PHB g COD-1) than the mixed culture (55mg PHB g COD-1). In all the tests, the concomitant H2 and PHB production was associated to a dissolved COD removal higher than 80%.
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