The performance of a three-stage process for polyhydroxyalkanoate (PHA) bioproduction from olive oil mill effluents (OME) has been investigated. In the first anaerobic stage OME were fermented in packed bed biofilm reactors into volatile fatty acids (VFAs), that increased 14% of the overall COD. This VFA-rich effluent was fed to the second stage, operated in aerobic Sequencing Batch Reactor (SBR), to enrich mixed cultures able to store PHAs. In the third step the storage response of the consortia was exploited by aerobic batch conditions, where the maximum concentration of produced PHA linearly increased with the substrate fed. About half of the stored PHAs were produced from substrates other than VFAs, mostly alcohols.
Biotech production of polyhydroxyalcanoates from olive mill wastewater / Bertin, Lorenzo; M., Villano; M., Majone; M., Beccari; Bettini, Cristina; Fava, Fabio. - (2009), pp. 399-405. (Intervento presentato al convegno Ecomondo 2009 tenutosi a Rimini nel 28-31 ottobre 2009).
Biotech production of polyhydroxyalcanoates from olive mill wastewater
BERTIN, LORENZO;
2009-01-01
Abstract
The performance of a three-stage process for polyhydroxyalkanoate (PHA) bioproduction from olive oil mill effluents (OME) has been investigated. In the first anaerobic stage OME were fermented in packed bed biofilm reactors into volatile fatty acids (VFAs), that increased 14% of the overall COD. This VFA-rich effluent was fed to the second stage, operated in aerobic Sequencing Batch Reactor (SBR), to enrich mixed cultures able to store PHAs. In the third step the storage response of the consortia was exploited by aerobic batch conditions, where the maximum concentration of produced PHA linearly increased with the substrate fed. About half of the stored PHAs were produced from substrates other than VFAs, mostly alcohols.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
