RT Journal Article
T1 Application of organosolv technology to improve the anaerobic digestion of olive oil pomace
A1 Pérez Paz, Alicia
A1 Solisio, Carlo
A1 Converti , Attilio
A1 Casazza, Alessandro Alberto
K1 2306.90 Química de Productos Naturales Orgánicos
K1 3303 Ingeniería y Tecnología Químicas
AB So far, there are few sustainable alternatives to manage the exhausted olive pomace (EOP), a dangerous waste produced by the olive oil sector. In this work, EOP resulting from organosolv pretreatment was submitted to conventional anaerobic digestion (mono-AD) or co-digestion with sewage sludge (co-AD) at different ratios using a pilot-scale stirred tank reactor. Firstly, it was observed that a shortening of the acclimation phase improved performance allowing a methane specific productivity of 575.15 LCH4 kg VS−1 d−1. Even though the mono-AD strategy was more performant than co-AD in terms of biogas specific productivity (25.50 Lbiogas kgEOP−1 d−1), all tested conditions yielded 67–70% methane and a negligible H2S content. Likewise, no significant differences between these strategies were found in terms of methane specific productivity and biodegradability that reached maximum values of 230.85 ± 19.29 LCH4 kgVS−1 d−1 and 61.3 ± 5.1%, respectively. The main differences between them were observed in the overall chemical oxygen demand consumption rate (819.10 and 656.70 gCOD L−1 d−1 for Co-AD and mono-AD, respectively) and volatile solids removal (86.5% for Co-AD and 34.8% for mono-AD) when feeding 40 g of pretreated EOP. This work highlights the positive effect of organosolv to improve AD and the feasibility of the proposal to achieve the zero waste in this sector
PB Industrial Crops and Products
SN 09266690
YR 2023
FD 2023-11-15
LK http://hdl.handle.net/11093/6706
UL http://hdl.handle.net/11093/6706
LA eng
NO Industrial Crops and Products, 204, 117249 (2023)
NO Xunta de Galicia | Ref. ED481B2018/073
DS Investigo
RD 04-dic-2024