Controlled, manipulated, and disturbance variables in the given figure are to be identified. Also, the effect of time length required on the waste concentration in the dialysis treatment is to be explained. Concept introduction: A control system is a system that regulates or monitors the behavior or working of other devices/systems using control loops. It can be used to control a single device or large industrial processes. Controlled variables (CVs) are the process variables that can be controlled, and its desired value is known as the set point. Manipulated variables (MVs) are the process variables that are adjusted by the controller to keep its value close to the set point. Disturbance variables (DVs) are the process variable that affects the controlled variables, but they cannot be manipulated and are associated with any changes in the operating environment of the ongoing process.

Question

2. A moving bed adsorption column needs to be designed to separate hydrophobic proteins from a fermentation broth. The following adsorption equilibrium data was observed in preliminary isotherm studies. The resin used was activated carbon with a porosity of 0.2. The overall mass transfer coefficient was determined to be 10 h¹, and the ratio of volumetric flow rate of broth to resin is 10. Determine the diameter of the column if the column height is limited to 2.5 m (indoor operation) with a flow rate of 20 m³/h, influent concentration of 7 g/L, and effluent concentration of 0.1 g/L. qi (mg/kg) Ci (g/L) 0.1 4.7 7.5 0.25 10.6 0.5 15.0 1.0 23.7 2.5 33.5 5.0 41.1 7.5

Answer 1

Question

Chapter 1, Problem 1.12E

Interpretation Introduction

Interpretation:

Controlled, manipulated, and disturbance variables in the given figure are to be identified. Also, the effect of time length required on the waste concentration in the dialysis treatment is to be explained.

Concept introduction:

A control system is a system that regulates or monitors the behavior or working of other devices/systems using control loops. It can be used to control a single device or large industrial processes.

Controlled variables (CVs) are the process variables that can be controlled, and its desired value is known as the set point.

Manipulated variables (MVs) are the process variables that are adjusted by the controller to keep its value close to the set point.

Disturbance variables (DVs) are the process variable that affects the controlled variables, but they cannot be manipulated and are associated with any changes in the operating environment of the ongoing process.

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2. A moving bed adsorption column needs to be designed to separate hydrophobic proteins from a fermentation broth. The following adsorption equilibrium data was observed in preliminary isotherm studies. The resin used was activated carbon with a porosity of 0.2. The overall mass transfer coefficient was determined to be 10 h¹, and the ratio of volumetric flow rate of broth to resin is 10. Determine the diameter of the column if the column height is limited to 2.5 m (indoor operation) with a flow rate of 20 m³/h, influent concentration of 7 g/L, and effluent concentration of 0.1 g/L. qi (mg/kg) Ci (g/L) 0.1 4.7 7.5 0.25 10.6 0.5 15.0 1.0 23.7 2.5 33.5 5.0 41.1 7.5

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