6533b7d4fe1ef96bd1261e65
RESEARCH PRODUCT
Effect of organic loading rate on the production of Polyhydroxyalkanoates from sewage sludge
Laura Isern-cazorlaAntonio MineoMaría Eugenia Suárez-ojedaGiorgio Manninasubject
HistoryEnvironmental EngineeringPolymers and PlasticsSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleGeneral MedicineBusiness and International ManagementManagement Monitoring Policy and LawWaste Management and DisposalIndustrial and Manufacturing EngineeringAerobic dynamic feeding Polyhydroxyalkanoates Resource recovery from wastewater Selection Sequencing batch reactor Sewage sludgedescription
The aim of this work was to study the effect of organic loading rate on the production of Polyhydroxyalkanoates (PHA) from sewage sludge. Synthesis of PHA using sewage sludge as platform was achieved in this work. Three pilot-scale selection-sequencing batch reactors (S-SBR) were used for obtaining a culture able to accumulate PHA following a strategy of aerobic dynamic feeding (ADF) at different volumetric organic-loading-rate (vOLR): 1.3, 1.8 and 0.8 g COD L-1 d-1 for S-SBR 1, S-SBR 2 and S-SBR 3, respectively. Decreasing the vOLR enhanced the general performance of the process as for organic matter removal (from 99.2% ± 0.3% in S-SBR-3 to 92 ± 2 in S-SBR-2) while the opposite trend was recorded for PHA production (6.0 PHA % w/w in S-SBR-3 vs 13.7 PHA % w/w in S-SBR-2 at the end of the feast phase). Furthermore, indirect and direct emissions, as N2O, were evaluated during the process for the first time. Finally, three accumulation tests were performed achieving 24% w/w.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2023-10-01 |