Al-Mallahi et al. (2016) aimed to investigate the appropriate conditions for the codigestion of NaOH-pretreated 2POMW with food waste. The authors concluded that the inhibition of methane gas production was strongly related to the high concentration of oleic VX-222 inside the reactor. The 20% NaOH-pretreated 2POMW which had the highest sCOD caused the highest increase in methane gas production of 503.6 mL CH4/g-VS (2POMW) when was applied in a mixing ratio of 4.3%.
Alagoz et al. (2015) investigated the effects of both co-digestion process and the different sludge pre-treatment methods on the biogas production from olive pomace and wastewater sludges.
Regarding OMSW fermentation, there is a lack of studies focused on the production of bioethanol using this biomass resource.
Haagensen et al. (2009) investigated the pre-treatment and ethanol fermentation potential of olive pulp. Wet oxidation and enzymatic hydrolysis have been applied and different concentrations of enzymes and enzymatic durations have been tested. The effect of treatment methods was evaluated based on the obtained ethanol yield in a subsequent fermentation step. Highest ethanol production was obtained when only enzymatic pre-treatment was applied, and the authors concluded that wet oxidation is not a recommended pre-treatment process for olive pulp. The advantages of simultaneous saccharification and fermentation process (SSF) over separate hydrolysis and fermentation process (SHF) with regard to process contamination were also highlighted.
Alagoz et al. (2015) investigated the effects of both co-digestion process and the different sludge pre-treatment methods on the biogas production from olive pomace and wastewater sludges.
Regarding OMSW fermentation, there is a lack of studies focused on the production of bioethanol using this biomass resource.
Haagensen et al. (2009) investigated the pre-treatment and ethanol fermentation potential of olive pulp. Wet oxidation and enzymatic hydrolysis have been applied and different concentrations of enzymes and enzymatic durations have been tested. The effect of treatment methods was evaluated based on the obtained ethanol yield in a subsequent fermentation step. Highest ethanol production was obtained when only enzymatic pre-treatment was applied, and the authors concluded that wet oxidation is not a recommended pre-treatment process for olive pulp. The advantages of simultaneous saccharification and fermentation process (SSF) over separate hydrolysis and fermentation process (SHF) with regard to process contamination were also highlighted.