Production of volatile fatty acids through co -digestion of sewage sludge and external organic waste: Effect of substrate proportions and long- term operation
Waste Management(2020)
Abstract
•Co-digestion of sewage sludge and organic waste for VFA production was studied.•Acetic acid dominated in short-term operation in batch mode.•An increasing proportion of organic waste increased valeric and caproic acid.•Caproic acid dominated during long-term operation in semi-continuous mode.•VFA-rich liquid achieved higher denitrification rate than acetate and methanol.
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Key words
Volatile fatty acids,Co-digestion,Sewage sludge,Caproic acid,Denitrification,External carbon source
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