Title:
Self-fermentation: Innovative Pretreatment for Use High Concentration of Olive Mill Wastewater in Anaerobic Digestion Plant
Author(s):
Signorini, A., Lembo, G., Massini, G., Pizzichini, D., Fenice, M.
Document(s):
Paper
Poster
Abstract:
This study aimed to evaluate the impact of self fermentation on methane production as biological pretreatment of olive mill wastewater (OMW). The self-fermentation was carried out at room temperature without mixing and at natural light cycle. The batch assays were performed at the influent substrate concentration of 36.7 g VS/l (OMW 100%), 18,4 g VS/l (OMW 50%) and 9.2 g VS/l (OMW 25%). The methane production was performed at 37°C in mixing condition. The results of methane production were compared with those obtained using untreated OMW . The results of this study showed that the self fermentation process is a very effective pretreatment to produce methane. Only the self-fermented samples have produced methane from undiluted OMW and a maximum cumulative methane production of 7583 ± 138 mlCH4/L and a yield of 246 ± 10 mlCH4/ gVS were obtained. A yield increase of +13.5% at OMW dilution of 50% was also achieved as compared to untreated OMW results. Interestingly, in the anaerobic digestion of untreated OMW, high hydrogen yields, with an average value of 46.8 ± 1.9 mlH2/gVS, were obtained. Moreover a depletion around 20% v/v of polyphenols was recorded for all experimental set.
Keywords:
methane production, olive mill wastewater, self fermentation, biological pretreatment, phenols, hydrogen production
Topic:
Biomass Conversion Technologies for Heating, Cooling and Electricity
Subtopic:
Anaerobic digestion for biogas production
Event:
24th European Biomass Conference and Exhibition
Session:
2CV.3.79
Pages:
965 - 969
ISBN:
978-88-89407-165
Paper DOI:
10.5071/24thEUBCE2016-2CV.3.79
Price:
FREE
