Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 6th Sem New 2160508 Biochemical Engineering Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VI (New) EXAMINATION ? WINTER 2019
Subject Code: 2160508 Date: 11/12/2019
Subject Name: Biochemical Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) List various unit operation encountered in bioprocessing
operation.
03
(b) What are the various methods used for immobilization of
enzymes.
04
(c) Write in brief notes on various steps involved in integrated
bioprocessing.
07
Q.2 (a) How does internal feedback system work for biomass? 03
(b) Explain with a diagram different phases of microbial growth. 04
(c) Explain growth of a typical microbial culture in a batch
conditions.
07
OR
(c) Discuss the relative advantages and disadvantages of continuous
culture.
07
Q.3 (a) Explain the following valve: (1) Plug valve (2) Butterfly valve (3)
Ball Valve.
03
(b) Write in brief the air sterilization technique used for aerobic
fermentation process.
04
(c) Draw a schematic of a fermenter vessel. Label the major
components and briefly explain their functions.
07
OR
Q.3 (a) State various strategies of aeration in fermentation vessel. 03
(b) Enlist various process and monitoring parameters for a control of
a fermenter.
04
(c) Discuss the different types of spargers used for aeration in
fermenter.
07
Q.4 (a) Define fluid rheology and its importance in fermentation process. 03
(b) Explain in short oxygen supply in fermentation process. 04
(c) List out various methods for determination of KLa value. Explain
any one in detail.
07
OR
Q.4 (a) Explain briefly the principle of scale up in bioprocess operation. 03
(b) Explain the effect of various physico chemical parameter on K La. 04
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Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VI (New) EXAMINATION ? WINTER 2019
Subject Code: 2160508 Date: 11/12/2019
Subject Name: Biochemical Engineering
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) List various unit operation encountered in bioprocessing
operation.
03
(b) What are the various methods used for immobilization of
enzymes.
04
(c) Write in brief notes on various steps involved in integrated
bioprocessing.
07
Q.2 (a) How does internal feedback system work for biomass? 03
(b) Explain with a diagram different phases of microbial growth. 04
(c) Explain growth of a typical microbial culture in a batch
conditions.
07
OR
(c) Discuss the relative advantages and disadvantages of continuous
culture.
07
Q.3 (a) Explain the following valve: (1) Plug valve (2) Butterfly valve (3)
Ball Valve.
03
(b) Write in brief the air sterilization technique used for aerobic
fermentation process.
04
(c) Draw a schematic of a fermenter vessel. Label the major
components and briefly explain their functions.
07
OR
Q.3 (a) State various strategies of aeration in fermentation vessel. 03
(b) Enlist various process and monitoring parameters for a control of
a fermenter.
04
(c) Discuss the different types of spargers used for aeration in
fermenter.
07
Q.4 (a) Define fluid rheology and its importance in fermentation process. 03
(b) Explain in short oxygen supply in fermentation process. 04
(c) List out various methods for determination of KLa value. Explain
any one in detail.
07
OR
Q.4 (a) Explain briefly the principle of scale up in bioprocess operation. 03
(b) Explain the effect of various physico chemical parameter on K La. 04
2
(c) The following rheological data were obtained with a fermentation
broth in the very initial stage of fermentation.
(i) Find out whether the fluid is Newtonian or non-Newtonian. If
it is non- Write in short on drying and crystallization process for
separation and purification of product Newtonian fluid, find the
rheological constants.
(ii) If it is a Newtonian fluid, find the viscosity of the fluid.
?? , N/m
2
?? ,S
-1
100 5
210 10
295 15
410 20
620 32
1000 50
07
Q.5 (a) Write in short on drying and crystallization process for separation
and purification of products.
03
(b) Write a short note on crystallizer. 04
(c) What is the purpose of cell disruption? Discuss various methods
of cell disruption briefly.
07
OR
Q.5 (a) Explain range of fermentation process. 03
(b) Explain different types of membrane process and their
specification.
04
(c) Explain single stage liquid-liquid extraction. 07
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This post was last modified on 20 February 2020