RT Journal Article
T1 Strategies for the valorisation of a protein-rich saline waste stream into polyhydroxyalkanoates (PHA)
A1 Roibás Rozas, Alba
A1 Val del Río, Ángeles
A1 Hospido Quintana, Almudena
A1 Mosquera Corral, Anuska
K1 Bioplastics
K1 High salinity wastewater
K1 Industrial wastewater
K1 Mixed microbial cultures
K1 Protein-rich waste streams
AB Saline Mussels Cooking Wastewater was valorised to produce PHA with Mixed Microbial Cultures (MMC). Due to the high protein content (1.8–5.7 g CODPROT/L), PHA accumulating capacity was below 10%, so several strategies were tested. In the acidification unit, Na(HCO3) was added, increasing protein conversion into Volatile Fatty Acids (VFA) from 10.3% to 69.2% and subsequent PHA accumulation from 6.9 to 14.7%. In the enrichment unit, the incorporation of a settling stage after the feast phase provoked a shift in the proteins’ oxidation from the feast to the famine phase, where the nitrogen released in the famine is used by the MMC for growth. This increased the biomass concentration and the tolerated COD (from 1.6 to 4.2 g VSS/L and from 2.2 to 4.38 g COD/L). Finally, varying the proteins/VFA ratio for MMC acclimation to proteins allowed increasing PHA accumulation from 8.8 to 41.5%
PB Elsevier
SN 0960-8524
YR 2021
FD 2021
LK http://hdl.handle.net/10347/26294
UL http://hdl.handle.net/10347/26294
LA eng
NO Bioresource Technology, 334 (2021), 124964
NO This research was supported by the Spanish Government (AEI) through TREASURE [CTQ2017-83225-C2-1-R] project. The authors belong to a Galician Competitive Research Group (GRC). The programme is co-funded by the FEDER (EU)
DS Minerva
RD 28 abr 2026