Luke O. Ajiuka, Olawole A. Kuti
Crude oil exhaustion and greenhouse emissions have remained a global concern till date. Domestic production of biofuel blends and micro-emulsion as substitutes for conventional fuel in tackling greenhouse gas emission has challenges like feedstock inadequacy, fuel-energy content, compatibility, oxidation stability and other automotive fuel property issues. Strategies to address these issues are discussed in this study. Case study of Nigeria shows that an annual conversion rate of 6.9/3.3% (2.1: 1) of cassava wastes will meet its E10/E5 blend from local production capacity. An effort has been made to correlate existing ethanol and biodiesel yields, E₁ and E₂ with expected oil yield as a function of gasoline and diesel shares, α₁ and α₂ per hectare of cultivation, to generate total oil yield per desired short and medium term biofuel targets utilizing selected feedstock at applicable yield bounds. A typical E10 gasohol from cassava will need 16,133 and 28,543 hectares from cassava plantation to meet its annual short and medium term biofuel targets. The R²-square value of 0.6402 for CF/SPel and 0.9044 for CF/SPlub is an indication that more liter/tonne volume of ethanol could be produced from CF/SPel except for in consistency when ammonia extract and urea are used as nitrogen source. Specific energy for direct ethanol fuel cell (DEFC) from daily production capacity equivalence of E10 per annum is estimated at 2.34GWh/Kg. Biofuel and fuel cells are good alternatives to express replacement of fossil fuel in automotive application.
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author={Luke O. Ajiuka and Olawole A. Kuti},
year={2026},
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