In response to the increased demand for ethanol, primarily for use in hand sanitizers, a new ethanol production plant has been established. The process flow diagram $($PFD$)$ for this production process is illustrated in Figure Q$1,$ with sugar beet serving as the primary raw material.

a$.$ Select THREE $(3)$ unit operation and draw a complete piping and

instrumentation diagram $($P&ID$)$ for this unit. Justify the rationale

behind the chosen control strategies.

$[25$ marks$]$

b$.$ Propose a complete process with control strategy to capture the $C{O}_2$ emitted from the plant. The process should involve solvent that available at the plant.

$[15$ marks$]$

c$.$ Suggest a method to reduce the production of hydroxymethylfurfural $($HMF$)$ and furfural by$-$products. Provide your justification supported by a control strategy.