The exploration of biomass fuels encourages the reduction of world atmospheric pollution and global warming. In addition, the depletion of non renewable energy sources such as fossil fuels induces the development of technologies to harness new and renewable energy sources. Abundant of fruit waste can be re-utilized in the bioethanol production. Hence, it can reduce pollution and waste materials, thus helps in waste disposal management. This study was investigated to evaluate the feasibility of the utilization of mango waste, Mangifera indica L. cv Chokanan to produce bioethanol via fermentation by yeast, Saccharomyces cerevisiae. The highest production of bioethanol yield could be obtained from mango pulp in the yeast concentration of 3 g/L at the temperature of 30°C that yielded 15 % (v/v) of ethanol. The ethanol production increased with the increase of fermentation time until five days of incubation. Total soluble solid (TSS), glucose and pH were reduced after fermentation. The trace elements (Pb, Al, Cu, Ca and Mg), viscosity and acid values of the bioethanol were found to be within the ASTM (American Society for Testing and Materials) standard, specifications with less hazardous element. Furthermore, the engine test showed that hydrocarbon, NO, CO and CO2 content were significantly lower in E5 (5 % bioethanol with 95 % gasoline) and E10 (10 % bioethanol with 90 % gasoline) than in E0 (100% gasoline) having less fuel consumption. The results showed that bioethanol fuel can be produced from mango waste and can be used in petrol engine in combination with pure petrol fuel, and fuel consumption can be reduced by using mango waste.
Bioethanol Production from Mango Waste (Mangifera indica L. cv chokanan): Biomass as Renewable Energy - ResearchGate. Available from: http://www.researchgate.net/publication/263581609_Bioethanol_Production_from_Mango_Waste_%28Mangifera_indica_L._cv_chokanan%29_Biomass_as_Renewable_Energy [accessed May 23, 2015].