HORTICULTURE

Detailed explanation-1: -Distillation, the present method of separating ethanol from the fermentation broth, is an energy-intensive one and frequently uses more energy than is available from the ethanol recovered.

Detailed explanation-2: -Distilling the Ethanol You will later have to back calculate how much ethanol we could have distilled from the large fermentation. Water and ethanol form an azeotrope; a 95% ethanol/5% water combination boils at 78.15° C. Pure ethanol boils at 78.3°C and water boils at 100°C.

Detailed explanation-3: -Ethanol is prepared from ethene by hydration in the presence of phosphoric acid acting as a catalyst. Ethene is mixed with heated steam in a fixed molar ratio. They react at 300-degree celsius to produce ethanol.