ABSTRACT
This study evaluated the effects of temperature on the methane yield and production rate in 1L batch digesters. Two trials were conducted using both substrates of pre-digested dairy manure slurry from a high loading continuously fed digester and raw dairy manure slurry. Digester temperature were 42.5,35, 20,15,10 and 5oC. The results showed that the methane yield was drastically lower for temperatures below 20oC. The methane production rate increased as the digester temperature was increased and an exponential relationship was obtained.HomePageKeywords: Methane digestion, Dairy manure slurry, Temperature dependency, Batch operation, Psychrophilic digestion