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Biogas and Bio-fertilizer Production Potential of Abattoir Waste as Means of Sustainable Waste Management Option in Hawassa City, Southern Ethiopia
SINDIBU, T; SOLOMON, SS & ERMIAS, D
Abstract
The purpose of this study was to assess abattoir waste generation in Hawassa Municipality Abattoir
(HMA) andits potential to produce biogas and bio-fertilizer employing a cross-sectional design and mathematical
computation based on standard coefficients. The study demonstrated that HMA generates 885,881.6Kg of abattoir waste
per year and using anaerobic digestion about 46,951.72m3/year of biogas can be produced. This waste has the potential of
generating a total energy of 246,027.01KWh/year. The biogas or energy from the waste can replace the biomass (firewood
and charcoal) and the expensive fossil fuels. Using the produced46, 951.72m3/year biogas could reduce the annual CO2
emission of 150,600.10Kg/kWh from kerosene, 150,600.10Kg/kWh from petrol, 132,882.50Kg/kWh from diesel or
132,882.50Kg/kWh from LPG use. The abattoir will be able to produce an estimated 65,112.3 Kg/year dry bio-fertilizer
from biogas technology and this bio-fertilizer can be supplied to local farmers for crop production or can be used by city
municipality for growing plants used for beautification. This obtainable bio- fertilizer is valued 29,951.66 USDper annum
and to a certain extent will contribute to the reduction of domestic demand of chemical fertilizer thus will reduce the
annual budget. As a long-term and sustainable waste management solution, installing anaerobic digestion plant is
recommended, but using proper disposal method among the existing would serve as a short-term solution.
Keywords
Abattoir; Bio-fertilizer; Biogas; Energy; Hawassa; Waste
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