| Popis: |
Energy play an influencing role in the development of key sectors of the nation's economy such as industry, transport and agriculture. Ethanol from cassava, a potential alternative and renewable fuel of the future, may required far more energy during its creation than its energy content after production.The energy requirement in the production of ethanol from cassava was determined, and pattern of energy consumption was investigated. A small scale dry-mill production process was set up for the production of the ethanol. Mathematical expressions were used to evaluate the energy requirement for each of the unit operations. Total energy input and output of cassava ethanol production were 38394.50MJ/ha and 28431.95MJ/ha, respectively. Energy use was 0.74, energy productivity was 0.034 and the Net Energy Value (NEV) was 0.75. This indicated that energy was not efficiently used and the fact that the NEV was less than 1.0 means that cassava ethanol production is not feasible from energetic standpoint and at a small scale level. |
