UPTU Past Question Papers
B Tech 6th Semester Bioreactor Analysis & Design 2006-07
Note : (1) Attempt all questions.
(2) All questions carry equal marks.
1. Attempt any two of the following :
(a) What is mathematical modelling? Describe in detail how you will model a CSTR?
(b) Describe different types of ideal reactors and explain why they are called ideal reactors ?
(c) What is residence time distribution? Define E,C and F curves.
2. Attempt any two of the following:
(a) How do you broadly classify reactions? Write in detail the factors affecting the reaction rate.
(b) The aqueous reaction A^R+S proceeds as follows : Time, min CA, mol/liter
0 0.1823 36 0.1453 65 0.1216 100 0.1025 160 0.0795 0.0494 and
00 With C4n = 0.1823 mol/liter, C = 0, Cso = 55 mol/liter Find the rate equation for this reaction. 1
(c) Describe in detail how the study of heterogeneous reaction is useful to a bioprocess engineer. Give some reactions in support of your ideas.
3. Attempt any two of the following :
(a) How do you interpret the batch reactor data to obtain the kinetics of a reaction? Explain integral method of analysis using first-order irreversible reaction as an Example.
(b) Write short notes on any two reactor types :
(i) Fluidized bed reactor
(ii) Plug Flow reactor
(iii) Airlift reactor
(c) Derive an expression for determination of second- order reaction kinetic constants using integral method of analysis.
4. Attempt any two of the following :
(a) How do a biochemical engineer transform laboratory scale data to be a plant scale? What are practical problems associated with it?
(b) Write in detail scale up method based on physical concept. How may the above concept be used in case of an agitated fermentor vessel?
(c) What is biomass wash-out with reference to a CSTR? Suggest the ways to avoid it.
5. Write short notes on any four of the following :
(a) Control of a Bioreactor
(b) PID Controllers
(c) Physical and Chemical environment of a bioreactor
(e) Fuzzy Controller
(f) Neural Network Controller.