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- W1837017992 abstract "There is a growing trend to consider organic wastes as potential sources of renewable energy and value-add products. Fermentation products have emerged as attractive value-add option due to relative easy production and broad application range. However, pre-fermentation and extraction of soluble products may impact down-stream treatment processes, particularly energy recovery by anaerobic digestion. This paper investigates primary sludge pre-fermentation at different temperatures (20, 37, 55, and 70 °C), treatment times (12, 24, 48, and 72 h), and oxygen availability (semi-aerobic, anaerobic); and its impact on anaerobic digestion. Pre-fermentation at 20 and 37 °C succeeded for VFA production with acetate and propionate being major products. Pre-fermentation at 37, 55, and 70 °C resulted in higher solubilisation yield but it reduced sludge methane potential by 20%. Under semi-aerobic conditions, pre-fermentation allowed both VFA recovery (43 g CODVFA kg−1 VS) and improved methane potential. The latter phenomenon was linked to fungi that colonised the sludge top layer during pre-fermentation." @default.
- W1837017992 created "2016-06-24" @default.
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- W1837017992 date "2016-01-01" @default.
- W1837017992 modified "2023-10-03" @default.
- W1837017992 title "Semi-aerobic fermentation as a novel pre-treatment to obtain VFA and increase methane yield from primary sludge" @default.
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- W1837017992 doi "https://doi.org/10.1016/j.biortech.2015.10.085" @default.
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