Question $2.$

Imagine you operate a batch bioreactor to convert food waste into a biochemical using a

type of bacteria.

a$)$ Discuss and sketch what would happen to the bacterial concentration $($growth curve$)$

and the biochemical production if the food waste used in the reactor is not properly

sorted and has about $50\%$ plastic waste materials.

$10$

$[$Note: A maximum of $\frac{3}{4^{th}}$ of a page for question $2(a)$ above is allowed. Sketch not included

in the page limit$]$

b$)$ Discuss and sketch what would happen to the bacterial concentration and the

biochemical production if the temperature in the reactor were to decrease from the

optimum temperature of $25C$ to $15C.$