초록
<P><B>Abstract</B></P> <P>This study investigated the temperature dependency of CH<SUB>4</SUB> emission from pre-storage of animal manure prior to anaerobic digestion at 15, 20, 25 and 30 °C using lab-scale anaerobic digesters. The manure was added and removed daily to simulate the pre-storage process at biogas plants. CH<SUB>4</SUB> emission accounted for 1–46% of total CH<SUB>4</SUB> potential from pig manure (PM) and 1–2% of that from cattle manure (CM) at the investigated temperatures, with significant increases above 25 °C. Addition of food waste (FW) reduced the CH<SUB>4</SUB> emission when storage temperature was 20 °C or lower for PM and 25 °C or lower for CM due to volatile fatty acid accumulation and lower pH (<5.5) but emissions increased with higher storage temperatures.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The temperature dependency of CH<SUB>4</SUB> emissions during storage of manure was evaluated. </LI> <LI> The effect of co-storage of manure with food waste was investigated. </LI> <LI> Food waste addition inhibited CH<SUB>4</SUB> emission at lower temperatures. </LI> <LI> Emission at higher temperatures increased with addition of food waste. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>