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Engineering ToolBox > Ethanol Bio-fuel from Raw Materials
Ethanol can be used as an gasoline extender in "gasohol" which is petrol (gasoline) with up to approximately 25% ethanol. Ethanol can be produced by fermentation of different raw materials. Ethanol yields for some common raw materials are indicated below:
| Material | Ethanol Yield | |
| (liter ethanol / kg raw material) | (liter ethanol / m2 area land) | |
| Cassava roots | 0.18 | 0.05 - 0.4 |
| Maize grain | 0.36 | 0.03 - 0.2 |
| Sugar cane stalks | 0.07 | 0.04 - 1.2 |
| Sweet potato roots | 0.12 | 0.1 - 0.5 |
| Wood | 0.16 | 0.02 - 0.4 |