Repeat Illustration 15.7-10 if nitric acid C 5 H 9 NO 4 is used as the nitrogen

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Repeat Illustration 15.7-10 if nitric acid C5H9NO4 is used as the nitrogen source instead of ammonia.

Illustration 15.7-10

Choosing a Substrate for a Fermentation 

An unspecified substrate that does not contain nitrogen, characterized only by its generalized degree of reduction ξS, together with dissolved ammonia as the nitrogen source is to be fermented to produce “average biomass” and no other products. As a function of the generalized degree of reduction of the substrate, determine the following:

a. The maximum product yield per C-mole of substrate consumed if the amount of ammonia is limited.

b. The maximum product yield per C-mole of substrate consumed if the amount of oxygen is limited.

c. The second-law limitation on the amount of product that can be formed d. The heat that must be removed to keep the fermenter at a constant temperature per C-mole of substrate consumed.

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