In the last decades, biodiesels have been in a common use as fuel which have been in some way derived from biomass. Biodiesel has been made from various sources including recycled greases, animal fats and vegetable oils. Biologically produced alcohols have been produced by using different enzymes through the fermentation of starches or sugars, or cellulose. Bioethanol is the most commonly bioalcohol, whereas propanol and butanol are the less commonly. Bioalcohols have been produced by fermentation of sugars derived from various biowastes including wheat, corn, sugar cane etc. (Shah et al., 2011. Int J Cur Sci Res., 1(2),5762) After the fermentation process, a two-stage process has been used to produce bioalcohol. Biowaste has been mostly included alcohols and sugar. In this process, alcohol is extracted from sugar into solvent in an extraction vessel and the extract is then separated by distillation. A biowaste which contains 23wt% alcohol and the balance sugar is fed to an extraction vessel. Pure solvent is fed to the column to extract the alcohol from biowaste. Assume that the mass of pure solvent to extraction unit as 100 kilograms per hour. The sugar-rich system leaving the bottom of the extraction vessel is 98wt% sugar and the balance alcohol. The solvent-rich extract from the extraction vessel is then fed to a distillation column. The composition of the top product (distillate) is 95wt% alcohol and the balance solvent. The bottom stream from distillation column contains 97.2wt% solvent and recovers 94% of the solvent fed to the extraction vessel. (Assume that sugar is not soluble into alcohol and solvent. There is no reaction.) (a) Draw and label a flowchart of the process, do the degree-of-freedom analysis. (10 points) (b) Write in mass balance equations you would solve to determine all unknown streams and calculate the percentage of alcohol in the process feed that is recovered in the distillate stream. (15 points)