Question

In: Other

Define Electrodialysis (ED), draw a schematic diagram of the process, and determine the main characteristics of...

Define Electrodialysis (ED), draw a schematic diagram of the process, and determine the main characteristics of ion exchange membranes to be used. What are the process limitations in ED systems? then differentiate between dialysis and osmosis phenomena.

Solutions

Expert Solution

Electodialysis is a process used to transport salt ions from one solution through ion-exchange membranes to another solution under the influence of an applied electric potential difference. Characteristics of ion-exchange membrane:

1. Semi-rigidity for ease of handling

2. Low electrical resistance

3. Insolubility in aqueous solutions

4. Availability to use above 46°C

5. Availability in different sizes and configurations

6. Long life expectancy

7.Resistance to change in pH from 2 to 9

Limitations:

1. Inherent limitation of working best at removing low molecular weight ionic components from a feed stream.

2. Becomes less economical when extremely low salt concentrations in the product are required and with sparingly conductive feeds.

3. Require feed pretreatment to remove species that coat, precipitate onto, or otherwise "foul" the surface of the ion exchange membranes.

Difference between Dialysis and Osmosis

Dialysis Osmosis
1. Involves separation of smaller molecules against the larger molecules through a permeable membrane. 1. Passing of water molecules from a low pressure to a high pressure across a semipermeable membrane.
2. Emphasizes what type of solute, such as salt, glucose, protein, fats, etc. will be allowed to pass through the membrane. 2. Only allowing that amount of solvent that will be allowed across the semipermeable membrane.
3.Used in the field of medicine in helping patients with renal failure excrete their body wastes. 3. Used in the field of biochemistry and pharmacology

Related Solutions

Draw a schematic diagram and a context diagram for a standard blender. Identify all of the...
Draw a schematic diagram and a context diagram for a standard blender. Identify all of the external entities and label all of the interactions.
1. Describe the process of Schematic Capture. 2. What is a Schematic Diagram. 3. Describe the...
1. Describe the process of Schematic Capture. 2. What is a Schematic Diagram. 3. Describe the guidelines for drawing schematics. 4. List the three main types of libraries for PCB design. 5. How are components classified, based on the leads.
With the aid of a clearly labelled schematic diagram, illustrate the main layout of a flame...
With the aid of a clearly labelled schematic diagram, illustrate the main layout of a flame atomic absorption spectrometer with continuum source background correction. Describe briefly the purpose of each component. Your diagram should include reference to the following components: The hollow cathode lamp                           The flame and burner The deuterium lamp                                   The monochromator The modulator or chopper                          The detector
draw a schematic diagram of an activated sludge system that includes a "selector". describe the function...
draw a schematic diagram of an activated sludge system that includes a "selector". describe the function of the "selector" and describe how this process configuration and associated operating strategy is different from a "conventional" activated sludge system.
Provide a schematic diagram of the main parts of a nuclear spectroscopy set up and describe...
Provide a schematic diagram of the main parts of a nuclear spectroscopy set up and describe their functions. What are characteristics of the Si detectors which mostly affect the energy resolution of the spectroscopy set up?
Draw a diagram that highlights the main pathophysiology of coronavirus.
Draw a diagram that highlights the main pathophysiology of coronavirus.
a) Draw and label your own circuit diagram using standard schematic symbols for a circuit with...
a) Draw and label your own circuit diagram using standard schematic symbols for a circuit with a 12 V battery, a 15 ohm resistor, a 400 mH inductor, and a switch, all in series. b) Write a diffferential equation (in the form of a loop equation) describing the behavior of this circuit after the switch is closed. c) The switch is first closed at time t = 0. Write down an equation for current in the circuit as a function...
3. a) Draw a schematic diagram of an X-ray diffractometer. [4 marks] b) The results of...
3. a) Draw a schematic diagram of an X-ray diffractometer. [4 marks] b) The results of an X-ray diffraction experiment that used X-rays of wavelength 0.154 nm show the first 6 peaks at angles of 40.6°, 58.8°, 73.8°, 87.8°, 101.8°, and 116.4°. i) Use this information to determine the possible crystal structures of the sample. [10 marks] ii) An additional scan was performed on the sample and an additional peak was observed at an angle of 133.2°. Determine the crystal...
Draw a detailed diagram of the TLC process
Draw a detailed diagram of the TLC process
Make a schematic diagram for the phases of swallowing.
Make a schematic diagram for the phases of swallowing.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT