Question 2 (a) (Aqueous) 10% w/w-acetic acid is produced in a bioprocess reactor. Propose separation sequences (block diagram) that will produce a target acetic acid (boiling point 118 C at 1 atm pressure) concentration of 40%. Justify your answer. (b) Explain the reason for selecting a solvent of mid-level interfacial tension (with aqueous phase) for L-L extraction. (c) An ion-exchange process using a resin to remove copper ions from an aqueous solution is conducted in a 2.5 cm diameter column and 50 cm high. The flow rate is 1.5 l/min and the breakpoint occurred at 10 minutes. Integrating the breakthrough curve gives a ratio of usable capacity to the total capacity of 0.6. Design a new tower that will be 4.0 m high column and operate at 4.5 l/min. Calculate the new tower size and break-point time. (d) Explain the advantages of BET adsorption isotherm.

(a) (Aqueous) 10%w/w-acetic acid is produced in a bioprocess reactor. Propose separation sequences (block diagram) that will produce a target acetic acid (boiling point 118C at 1atm pressure) concentration of 40%. Justify your answer. (b) Explain the reason for selecting a solvent of mid-level interfacial tension (with aqueous phase) for L-L extraction. (c) An ion-exchange process using a resin to remove copper ions from an aqueous solution is conducted in a 2.5cm diameter column and 50cm high. The flow rate is 1.5l/min and the breakpoint occurred at 10 minutes. Integrating the breakthrough curve gives a ratio of usable capacity to the total capacity of 0.6. Design a new tower that will be 4.0m high column and operate at 4.5l/min. Calculate the new tower size and break-point time. (d) Explain the advantages of BET adsorption isotherm