Over 93% of Uganda�s population relys on wood fuel in form of either charcoal or fuelwood for cooking. Uleppi\r\nsub-county in Arua district is a typical example of such areas in Uganda where households entirely use fuelwood to meet their\r\nenergy demand for cooking. The use of fuelwood is however associated with the use of inefficient stoves that accelerate\r\ndeforestation thus increasing carbon dioxide (CO2) emissions. The use of fuelwood is also associated with a smoky\r\nenvironment that has adverse health impacts on women and children who spend long hours in the kitchen. In addition, women\r\nand children spend long hours gathering fuelwood which significantly reduces farm productivity. This project was therefore\r\naimed at design and construction of a biogas plant ideal for a household in Uleppi sub-county as an alternative to fuel wood.\r\nThe research involved sizing of the floating drum biogas digester and gasholder, economic analysis as well as estimating CO2\r\nemission reduction. For a household with an average of three heads of cattle managed in a free range system, the biogas\r\ndigester and gasholder were sized as 1.4 m3 and 0.29 m3 respectively with 0.48 m3 of biogas produced per day. At this\r\ncapacity, it was found that biogas utilization can reduce individual household consumption of wood fuel by 66.32% for a\r\nhousehold size of five persons. The carbon emission reduction for all households was estimated at 432 tons of CO2 per year.\r\nThe benefit-cost ratio was found to be 3.26, hence worthy to invest in the biogas technology. The capital recovery period for\r\n459 USD of the biogas plant installation with an economic life of 15 years at 23 % interest rate was found to be two years.
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