RT Journal Article
T1 Thermal hydrolysis pre-treatment has no positive influence on volatile fatty acids production from sewage sludge
A1 Castro Fernández, Ander
A1 Taboada Santos, Antón
A1 Balboa Méndez, Sabela
A1 Lema Rodicio, Juan Manuel
K1 Sewage sludge
K1 Volatile fatty acids
K1 Thermal hydrolysis pre-treatmentp
K1 HMicrobiology analysis
AB The study compares the potential to produce volatile fatty acids (VFA) from sewage sludge, both raw and thermally pre-treated in two modes of operation. In batch mode, raw sludge at pH 8 obtained the highest maximum VFA yield (0.41 g COD-VFA/g CODfed) whereas pre-treated sludge achieved a lower value (0.27 g COD-VFA/g CODfed). The operation of 5-L continuous reactors showed that thermal hydrolysis pre-treatment (THP) did not have any significant influence on VFA yields, averaging 15.1 % g COD-VFA/g COD with raw sludge and 16.6 % g COD-VFA/g COD with pre-treated one. Microbial community analysis showed that phylum Firmicutes was predominant in both reactors and that the enzymatic profiles involved in VFA production were very similar regardless of the substrate fed
PB Elsevier
YR 2023
FD 2023
LK http://hdl.handle.net/10347/30609
UL http://hdl.handle.net/10347/30609
LA eng
NO Bioresource Technology 376 (2023) 128839
NO This work is part of the ECOVAL and CIGAT CIRCULAR projects, which are funded by Interreg Sudoe (SOE4/P1/E1104) and by the Xunta de Galicia and Viaqua (IN853C2022/03), respectively. Juan M. Lema belongs to the Galician competitive research group ED431C-2021/37 co-funded by Xunta de Galicia and ERDF (EU)
DS Minerva
RD 3 may 2026