PRODUCTION OF ETHANOL FROM TROPICAL FRUIT JUICE PASTEURIZATION WASTE. CASE OF THE COMPANY MADAGASCAR PREMIUM EXOTICA (MPE)

PHYSICAL SCIENCE AND ENVIRONMENT

The east coast of Madagascar is an area rich in tropical fruits that are highly prized on the European market. Among these fruits, we can mention: passion fruit, soursop, guava, lychee and pineapple. Several companies are involved in the processing of these tropical fruits, including the company MPE or "Madagascar Premium Exotica" which produces tropical fruit juice and puree through pasteurization. The production of fruit juice and purée generates a lot of waste representing on average 6% to 10% of the raw fruit. The problem of BEP is the rational management of this waste. The present research work focused on lychee and pineapple waste. Its purpose is: first, the production of bioethanol through the energy recovery of the waste from pasteurization of these fruits; second, the contribution to the solution of the BEP waste rational management problem. Bioethanol is a renewable, ecological and alternative energy source to wood energy. The methodology adopted for the realization of this research work is both qualitative and quantitative. and requires a priori the passage through the following activities: collecting bibliographic and webographic data, going down to the BEP company level to see first-hand the reality of the waste to be treated, experimentation work in the laboratory, data analysis and processing and writing this research work. The results of this work showed that fruit waste has a huge potential in sugars. To manage this waste rationally, the solution is the application of fermentation technology followed by distillation and then rectification in order to transform it into bioethanol. The economic feasibility study for the establishment of a waste processing distillery unit within the company is interesting with a profitability index of 1.33, i.e. the investment of 1 MGA will lead to a net profit of 0.33 MGA. In addition, the Internal Rate of Return is 28.45% which is much higher than the bank rate.

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