The world’s population continuously grows at a quarter million people per day. This fast-growing population had raised the world energy consumption up to 474 × 1018 J per year with 80 to 90 percent derived from the combustion of fossil fuels. It is estimated that the fossil energy will be lasted in 42 years. Rice husk is an alternative of non-fossil energy that may be utilized in traditional way of cooking (burning it in a traditional stove). However, burning the husk produces some carbon gasses that may pollute the air. In order to reduce the gas pollution, the gas may be mixed with kerosene and water using sonochemical technique to produce dry steam. This steam is a good fuel for a traditional stove. It is confirmed that 1 liter of water can be boiled in 11 minutes when the temperature of the water is 95°C while the stove is 264°C. the sonochemical technique had successfully increased the efficiency of the energy consumption of the stove up to 17%. The carbonized fuel is also not expensive since its cost is only around $ 6 C (IDR 570) for boiling 1 liter of water.

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