Realities, Potential And Availability Of Slaughterhouse Waste: A Guarantee Of Sustainable Development From Agroenergy Valorization By Biomethanization. Case Of Ankadindratombo, Rural Commune Of Alasora Madagascar

Abstract

In order to develop the country, non-oil producing countries practice the policy of diversifying energy sources, as is the case with the valorization of slaughterhouse waste in Ankadindratombo, in the rural commune of Alasora, Analamanga region. This slaughterhouse has daily fermentable waste of 4360 kg from the slaughter of 100 heads of zebus and 20 heads of pigs. These wastes are not valorized until now, but they are potential resources for the development of the said commune. This research work has made it possible to valorize this waste by the technology of biomethanization. The infrastructure to be set up requires a digester with a useful volume of 91560 l or 92 m³. The proposed model is the type of digester with floating bell. This valorization will make it possible to obtain 5958,67 kg of biological fertilizer per day and 74 127 l per month of biomethane gas, an alternative energy source to wood energy. The financial study showed that the implementation of this infrastructure requires an initial investment of 125 120 940 Ar, with a Net Present Value of 39 230 217,17 MGA, an Index of Profitability (Ip) of 1,31 and Internal Rate of Return (IRR) of 39, 7%.

In short, this research work is a contribution to the search for a viable and reliable solution to valorize the waste of slaughterhouses of Ankadindratombo for agro energy purposes.