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%.
Photofermentative production of hydrogen and poly-β-hydroxybutyrate from dark fermentation products / Luongo, Vincenzo; Ghimire, Anish; Frunzo, Luigi; Fabbricino, Massimiliano; D'Antonio, Giuseppe; Pirozzi, Francesco; Esposito, Giovanni. - In: BIORESOURCE TECHNOLOGY. - ISSN 0960-8524. - 228:(2017), pp. 171-175-175. [10.1016/j.biortech.2016.12.079]
Photofermentative production of hydrogen and poly-β-hydroxybutyrate from dark fermentation products
LUONGO, VINCENZO;FRUNZO, LUIGI;FABBRICINO, MASSIMILIANO;D'ANTONIO, GIUSEPPE;PIROZZI, FRANCESCO;Esposito, Giovanni
2017
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%.File | Dimensione | Formato | |
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