Assessment of Specific Methanogenic Activity from Cow Dung

The specific methanogenic activity (SMA) is a test to measure the producing potential of an anaerobic bacteria until it’s allowing a relevant organic loading rates to be applied for a selected substrate. Commonly, acetate is used as substrate for the SMA test. Anaerobic bacteria were mostly taken from an anaerobic digester and cow dung was also implemented as a source of an anaerobic bacteria. However, the results of SMA of cow dung was less reported. Therefore, this study is initiated to determine the potential of methane production from the cow dung by using the SMA test. Prior the SMA test, the cow dung was characterized for solids where the results showed that the cow dung is having 12.00 g L-1 for total solid and 10.50 g L-1 for volatile solid. The SMA test was conducted at mesophilic condition by using an automatic methane potential system test (AMPTS II) and the SMA of the cow dung was found as 0.04 in unit g COD-CH4 g-1VS-1d-1. The significance of this research is to determine the anaerobic bacteria potential of cow dung for use in the anaerobic digestion process, which offers numerous advantages for manufacturing, particularly in industrial applications such as methane production (fuel)

Assessment of Specific Methanogenic Activity from Cow Dung

The specific methanogenic activity (SMA) is a test to measure the producing potential of an anaerobic bacteria until it’s allowing a relevant organic loading rates to be applied for a selected substrate. Commonly, acetate is used as substrate for the SMA test. Anaerobic bacteria were mostly taken from an anaerobic digester and cow dung was also implemented as a source of an anaerobic bacteria. However, the results of SMA of cow dung was less reported. Therefore, this study is initiated to determine the potential of methane production from the cow dung by using the SMA test. Prior the SMA test, the cow dung was characterized for solids where the results showed that the cow dung is having 12.00 g L-1 for total solid and 10.50 g L-1 for volatile solid. The SMA test was conducted at mesophilic condition by using an automatic methane potential system test (AMPTS II) and the SMA of the cow dung was found as 0.04 in unit g COD-CH4 g-1VS-1d-1. The significance of this research is to determine the anaerobic bacteria potential of cow dung for use in the anaerobic digestion process, which offers numerous advantages for manufacturing, particularly in industrial applications such as methane production (fuel)

Methane Production from the Digestion of Thermally Treated Food Waste at 80°C

Food waste is the most suitable feedstock for anaerobic digestion. However, methane yield from the digestion of food waste is low. Therefore thermal pretreatment serves as the best solution. Also, the effect of thermal pretreatment on food waste (Malaysian dietary) before anaerobic digestion has low documentation. Hence this research aims to analyze the methane production and its kinetics from the digestion of thermally treated food waste. The result showed that thermal treatment improves the bioavailability of food waste, subsequently improve the methane production of food waste. The ultimate methane yield for thermally treated food waste at 80°C was 883.08 CH4/gVS higher than untreated food waste. The kinetic parameters observed from Modified Gompertz modeling were slightly lower from the laboratory data for both substrates. Thus, thermal pretreatment undoubtedly improved the anaerobic digestion of food waste