Yes, there are, but I’m not sure if you can buy your own personal biofueled lamp. A team in India compared energy efficiency between a kerosene lamp and a standard latern powered by crude jatropha oil, which is 100% biofuel. The biofuel made the flame appear yellow and the biofuel lamp laster three times longer than the kerosene lamp. A good deal for jatropha oil. There is another lamp ($200), shown in the second link below that is powered by biodiesel.
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