Seat No.:
Subject Code: 2160507
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VI(NEW) - EXAMINATION - SUMMER 2019
Subject Name: Advance Separation Techniques
Time: 10:30 AM TO 01:00 PM
Instructions:
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- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
Q.1 (a) List the chemicals commonly used as supercritical solvent. [03]
(b) Explain the commercial applications of short path distillation process [04]
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(c) Explain the concept of Reactive Distillation with a neat flowsheet and its application. [07]Q.2 (a) Compare short path distillation with molecular distillation. [03]
(b) What are the essential properties of a good supercritical solvent? [04]
(c) Discuss the Advance separation techniques applied in chemical industry and their benefits with example. [07]
OR
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(c) Describe the manufacturing of ETBE by Reactive Distillation process. And compare with the conventional process. [07]
Q.3 (a) List all the membrane based separation processes. [03]
(b) Draw flow sheet of batch super critical extraction. [04]
(c) Explain in detail the purification of hydrogen using six bed Pressure Swing Adsorption (PSA) technique. [07]
OR
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Q.3 (a) List the advantages of PSA over cryogenic distillation. [03]
(b) Explain the concept of Melt Crystallization. [04]
(c) Discuss principal of pressure swing Adsorption with one industrial application in details. [07]
Q.4 (a) Draw a neat sketch of a cross-flow membrane process. [03]
(b) Define Nanofiltration and Explain factors affecting Nanofiltration. [04]
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(c) Explain the concept of Reverse Osmosis (RO) and discuss in detail the use of RO in desalination process. [07]OR
Q.4 (a) Discuss working principle of Reverse Osmosis. [03]
(b) Write short note on Membrane cleaning. [04]
(c) Discuss working principle of Ultra Filtration and its industrial applications. [07]
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Q.5 (a) Write short note on membrane distillation. [03]
(b) Explain the working of a membrane reactor. [04]
(c) Write with neat sketch about different Modules used in membrane separation. [07]
OR
Q.5 (a) Write commercial applications of Pervaporation. [03]
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(b) Write short note on Nanofiltration. [04](c) Explain the concept of Pervaporation and describe in detail the manufacturing of MTBE by using pervaporation with neat sketch. [07]
Date: 18/05/2019
Total Marks: 70
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