RT Conference_Proceedings
T1 Exploring hydraulic and organic overload effects in a xylose-fed SBR
A1 Iglesias Riobó, Juan
A1 Mauricio Iglesias, Miguel
A1 Carballa Arcos, Marta
K1 Chain elongation
K1 Organic loading rate
K1 Xylose
AB This study compares the impact of hydraulic and organic overload in a sequential batch reactor (SBR) fermenting xylose as substrate. Before overloading (SBR reference, SBR-R), the system was operated with an HRT of1 day and an OLR of 12 g COD/L·d, resulting in a SRT of 3.5 days, with complete xylose conversion and a considerable caproic acid production (0.11 Cmol/Cmol-s. Decreasing HRT (hydraulic overload) in SBR-H (HRT 0.5 days; OLR 24 g COD/L·d) led to non biomass retention (HRT=SRT), lower xylose conversion (65%) and negligible caproic acid formation. In contrast, doubling the feeding xylose concentration (organic overload) in SBR-O (HRT 1 day; OLR 24 g COD/L·d) resulted in a similar performance as the SBR-R with lower SRT (2.5 days) and higher butyric acid production. Results suggest the system under the conditions applied is more sensitive to the hydraulic overload than to the organic overload.
YR 2024
FD 2024-06-03
LK http://hdl.handle.net/10347/34749
UL http://hdl.handle.net/10347/34749
LA eng
NO This research was framed in CELL4CHEM project (PCI2021-121989, ERACoBioTech 3rd call) funded by MICIU/AEI/10.13039/501100011033 and the European Union NextGenerationEU/PRTR. The authors belong to a Galician Competitive Research Group (ED431C-2021/37).
DS Minerva
RD 28 abr 2026