The paper investigated the use of cattle dung as an alternative and renewable energy source for Nigerian rural laboratories. The non- availability of electric power supply in most Nigerian rural areas has made it difficult for the researchers in the areas to utilize their wealth of knowledge and experience for reasonable and developmental scientific researches. A digester made of mild steel of radius 0.3m, length 0.6m and 2mm thickness was used based on the design pressure of 1.7MN/m2 (16.93 bars). Both pressure and thermometer gauges were installed on the top surface of the digester. Pressures and temperatures were monitored at 12 noon daily, for two weeks. The biogas was compressed in to a gas cylinder after being refined through aqueous sodium hydroxide using a spooter. The compressed gas was then tested for combustion. The results indicated that cattle dung had a short hydraulic retention time of 13 days for combustion of the biogas to occur. Chromatography results showed that 56.20% CH4, 39.51% CO2, 0.53% NH3, 1.92% CO, and 1.84% H2S were the constituents of the unrefined biogas while the refined one comprised 70.29% CH4, 27.82% CO2, 0.00% NH3, 1.55% CO, and 0.34% H2S. The calorific values of the raw and refined biogas were 19.15MJ/m3 and 22.62 MJ/m3 respectively.
PAPER TITLE :CATTLE DUNG BIOGAS AS A RENEWABLE ENERGY SOURCE FOR RURAL LABORATORIES
JOURNAL Of SUSTAINABLE TECHNOLOGY | VOLUME 4 NUMBER 1 2013
- Author(s) : ADEGUN, I.K. and YARU, S.S