From the various iterations, it can be found that all combinations of volumes and numbers of fermentors will cost much higher than that of the raw materials. For example, two reactors of 1200 cu meters each producing the desired amount of ethanol will have a raw materials cost of $20 million per year while the income from the ethanol would be $ 14.2 million per year. This leads us to believe that a batch process is not an economically feasible process to produce ethanol.

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A continuous process should be looked into.

Click here for the steps in developing a continuous process.