Bioethanol essentially has two types of application:
- It can be used as a motor fuel, in practically pure state or blended in different proportions with conventional 95-octane fuel (depending on whether the percentage of biofuel is 5%, 10% or 85%, these blends are E5, E10, E85 respectively). In this form it can be used to power automobiles. In some countries it is also used in buses and industrial vehicles.
- Bioethanol is also used as an additive for traditional petrols in the form of Ethyl tertiary butyl ether (ETBE). The ethanol is mixed with isobutene (a non-renewable petroleum derivative) to form ETBE. Because of its high octane rate.
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