The growing energy crisis, mainly the depletion of fossil fuels, is a global problem; therefore, it has become imperative to search for n alternative fuel source to meet the energy demand.

FREMONT, CA: The rapidly growing human population and industries have to lead to high demand for energy. The major part of the demand is fulfilled by non-renewable fossil fuels, which as high in cost, depletes faster, and is a prime reason behind pollution. Thus the need to produce energy from alternative sources like solar, wind, geothermal, hydroelectric source and biosources have become very popular among the researchers. The energy produced by biosources has proved to be the most effective replacement for fossil fuels. Biodiesel is produced from numerous sources like edible oils, non-edible oils, and other sources such as refinery waste. Here are three methods used for biodiesel production.

Ultrasound Technology

Ultrasound cavitations are advantageous over conventional mixing and increase the mass transfer between the feed oil and the reactants in the transesterification process. It is a cost-efficient process in comparison to the mechanical agitation and supplies the activation energy to the transesterification process. The process improves the overall reaction rate, increases the biodiesel yield, and lowers the reaction time.

Reactive Distillation 

It is a process where chemical reaction and product separation happens together in the same unit. The process does not require post-processing separation and purification. As a result, it reduces the number of process units and decreasing the cost of production.


The process involves decomposition of biomass at high temperature in the inert atmosphere for producing liquid oil, gas products, and bio-char. It is one of the most commonly used methods for the conversion of waste materials into useful products. Biodiesel share almost similar properties with diesel fuel. It can wither be used for the combustion process or be modified into liquid transport fuels.

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