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.

Isern-Cazorla L., Mineo A., Suarez-Ojeda M.E., Mannina G. (2023). Effect of organic loading rate on the production of Polyhydroxyalkanoates from sewage sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT, 343 [10.1016/j.jenvman.2023.118272].

Effect of organic loading rate on the production of Polyhydroxyalkanoates from sewage sludge

Mineo A.
Secondo
Data Curation
;
Mannina G.
Ultimo
Writing – Review & Editing
2023-10-01

Abstract

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.
1-ott-2023
Settore ICAR/03 - Ingegneria Sanitaria-Ambientale
Isern-Cazorla L., Mineo A., Suarez-Ojeda M.E., Mannina G. (2023). Effect of organic loading rate on the production of Polyhydroxyalkanoates from sewage sludge. JOURNAL OF ENVIRONMENTAL MANAGEMENT, 343 [10.1016/j.jenvman.2023.118272].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/596513
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