Both biological and petrochemical processes—the hydration of ethylene and the fermentation of carbohydrates with yeast—are used to make ethanol. Which method is more cost-effective depending on current petroleum and grain feedstock prices. In India, sugarcane is used to produce ethanol. The most popular source of ethanol in domestic production is corn. Although less typical, it may also be manufactured using cellulosic feedstocks including agricultural byproducts and wood. 

These have a special zero liquid discharge guarantee and are utilised in the fermentation, distillation, and evaporation processes in the alcohol producing sectors. Vacuum, azeotropic, extractive, batch, and steam distillation are all examples of large-scale industrial distillation uses. Continuous, steady-state fractional distillation is most frequently employed in petrochemical, chemical, and natural gas processing facilities, as well as petroleum refineries.

• Design and Manufacture of: