Pilot-Scale Acidogenic Fermentation of Reground Pasta Byproduct for Polyhydroxyalkanoate Production with Mixed Microbial Cultures.

ABSTRACT: The production of polyhydroxyalkanoates (PHAs) has been herein investigated by using an organic acid mixture originated from a pilot-scale acidogenic fermentation (AF) of reground pasta (RP) byproduct. The pilot-scale AF process was conducted either under no pH control or with the pH maintained at a value of 5.90, with the two obtained fermented mixtures termed RP-fermented 1 and RP-fermented 2, respectively. The fermented mixtures were fed to a lab-scale sequencing batch reactor (SBR), operated at short hydraulic retention time (HRT, 0.5 days) and sludge retention time (SRT, 1 day) and at two values of the applied organic loading rate (OLR) of 2.12 gCOD_ACIDS/Ld and 4.25 gCOD_ACIDS/Ld. During all of the SBR operating conditions, a high selective microbial pressure was

SUBMITTER: Salvatori G 

PROVIDER: S-EPMC11881138 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature