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Understanding ethanol blending -K Bharat Kumar

-The Hindu

How is ethanol extracted? What are the environmental concerns with respect to this process?

The story so far: Prime Minister Narendra Modi announced that India has achieved its target of blending 10% sugarcane-extracted ethanol in petrol, ahead of schedule. Addressing the nation from the Red Fort on the 76th Independence Day, he rooted for energy independence stating that, “we need to be Aatmanirbhar (self-sufficient) in our energy sector”. India is one of the world’s biggest oil importing nations.

What is ethanol blending?

Blending ethanol with petrol to burn less fossil fuel while running vehicles is called ethanol blending. Ethanol is an agricultural by-product which is mainly obtained from the processing of sugar from sugarcane, but also from other sources such as rice husk or maize. Currently, 10% of the petrol that powers your vehicle is ethanol. Though we have had an E10 — or 10% ethanol as policy for a while, it is only this year that we have achieved that proportion. India’s aim is to increase this ratio to 20% originally by 2030 but in 2021, when NITI Aayog put out the ethanol roadmap, that deadline was advanced to 2025.

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