| dc.description.abstract | Renewable energy sources are essential as alternative fuels to substitute
fossil energy sources, particularly petroleum, whose reserves continue to decline if
their utilization is not properly controlled. Indonesia also needs to strengthen its
renewable energy sector in order to produce alternative products that can replace
petroleum-based fuels. However, the utilization of biogas as a fuel for electricity
generation remains very limited due to the fact that the biogas produced is neither
sufficiently pure nor available in large quantities. To address this issue, a filtration
process is required to purify the biogas, while the fermentation conditions must be
optimized by maintaining a neutral pH. The application of a sulfur filter can be
used to purify the biogas, whereas Fly Ash Bottom Ash (FABA), as an industrial
by-product, can be utilized to neutralize the acidic environment resulting from the
fermentation of cow manure. Therefore, this study was conducted to examine the
effect of using a sulfur filter and FABA on electricity generation from a generator.
The method employed in this research was anaerobic fermentation of organic
materials, specifically cow manure and rice straw, with varying Carbon/Nitrogen
(C/N) ratios of 26, 28, and 30, which were calculated using the Goal Seek feature
in Microsoft Excel. The results of the study indicated that cow manure and rice
straw fermented for 21 days at an average temperature of 29.87 °C and an average
pH of 7 produced the highest gas mass of 1368,06 grams, an average electrical
power output of 202 Watts, and an optimum generator rotational speed of 277.2
rpm. | en_US |
