IV B.Tech I Semester Examinations,MAY 2011 MEMBRANE TECHNOLOGY Chemical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
(b) Explain the laboratory setup for tubular membrane preparation.
(c) Write the methods to prepare hallow fiber and capillary membrane. [6+6+4] 2. Write short note on
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(a) Resistance towards mass transport.
(b) Concentration polarization in pressure driven membranes. (c) Fully developed laminar and turbulent flow.
[6+4+6]
3. (a) Discuss Henrys law and Langmuir equations.
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(b) Discuss transportation through porous membrane.
4. Discuss DSC/DTA physical methods for non porous membrane.
[8+8] [16]
5. (a) Pressure retarded osmosis(PRO) allows to produce energy originating from an osmotic flow due to an osmotic pressure difference.
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(b) Is the maximum power obtained at ∆p =0?Calculate the power which can be generated from 3% and a 15% NaCl solution respectively, and a membrane permeability of Lp= 0.36 kg/m2 ,hr.bar(assume vont hoff law is still valid) [8+8]
6. (a) Write the uses of plates and frames in plate and frame module. (b) Explain spiral wound module with diagram.
Determine the water permeability coefficient graphically.
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8. The pure water flux of a membrane with a diameter of 7.5 cm has been determined as a function of the applied pressure. The following results are obtained:
Code No: 07A70808
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Set No. 4
1. Compare the different membranes for basic parameters. 2. Discuss clustering and solubility of liquid mixture.
IV B.Tech I Semester Examinations,MAY 2011 MEMBRANE TECHNOLOGY Chemical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ?????
(a) Boundary layer resistance model.
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(b) Gel layer model.
[8+8]
5. Discuss following with diagrammatic representation: (a) Asymmetric membranes. (b) Porous membranes.
(c) Homogeneous membranes.
(d) Cylindrical porous membranes.
[16]
6. Write short note on:
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(a) gas separation through non porous membrane.
(b) choice of organic solvents in liquid membrane.
[16]
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7. A polymer solved in a water has a hydrodynamic radius of 15 nm. Calculate the rejection of membrane with a uniform pore radius 0.05 m and 0.1 m for the case of no adsorption at the pore wall and for the case with monolayer adsorption at the pore wall. [16]
8. Calculate the osmotic pressure of the following aqueous solution 3% NaCl(MNacl = 58.45 g/mol) by weight, 3% albumin(Malb 65.000 g/mol) by weight and a suspension containing 30 g/l of a solid (where the particle weight is 1 ng= (10−9 g) at a temperature 25 C. [16] ????? 3
Code No: 07A70808
R07
Set No. 1
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IV B.Tech I Semester Examinations,MAY 2011 MEMBRANE TECHNOLOGY Chemical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Write brief note on consequences of concentration polarization.
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(b) Discuss fully developed laminar and turbulent velocities in a pipe with diagram. [6+10] 2. (a) List out the industrial applications of micro filtration. (b) List out the industrial applications of ultra filtration.
[8+8]
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3. (a) Write any six physical and chemical properties and give classification based on their separation process. (b) Define separation process and explain the sorting demon process. 4. Explain how to determine diffusion coefficient by time lag method.
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5. Explain and justify:
[8+8] [16]
(a) Importance of membrane structure.
(b) Importance of materials used to prepare synthetic membrane. 6. Discuss about hallo fiber module and plate and frame module.
[16] [16]
7. Draw and explain the following with diagrams: (a) Supported liquid membranes.
[8+8]
8. Discuss wide angle XRD with graph .
[16]
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(b) Emulsion liquid membranes.
4
Code No: 07A70808
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Set No. 3
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IV B.Tech I Semester Examinations,MAY 2011 MEMBRANE TECHNOLOGY Chemical Engineering Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. Discuss briefly about:
(b) Explain the laboratory setup for tubular membrane preparation. (c) Write the methods to prepare hallow fiber and capillary membrane. [6+6+4] 4. (a) Write the important parameters of electro dialysis (b) Explain separation of amino acids through electro dialysis
[8+8]
5. (a) Write a note on modules and process designs.
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(b) Discuss about plate and frame modules with schematic flow path.
[6+10]
6. Discuss the following: (a) Membrane.
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(b) Membrane process. (c) Selectivity.
(d) Flow.
[16]
7. (a) Write the concepts of pervaporation. (b) Short note on supported liquid membranes. (c) draw and explain schematic drawing of the pervaporation process with a downstream vacuum. (d) Write a short note on porous membrane. 5
[16]
Code No: 07A70808
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Set No. 3
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8. (a) A 5% solution of sucrose (Mw = 342 g/l) is concentrated using a tubular nano filtration membrane with an internal diameter of 6mm. The membrane shows a complete rejection for sucrose. With a feed solution of 5 wt%, a temperature of 20 C and a pressure of 20 bar, a flux is measured of 33.5 l/m2 .hr at a cross flow velocity of 0.5 m/s while at a velocity 4.5 m/s a flux is measured of 48.9 l/m2 h. other data density is 103 kg/m3 η = 1.1*10−3 pa.S a= 0.05, b= 1.1 Dsucr = 4.2 *10−10 m2 /s. (b) Calculate the concentration polarization modules for both flow rates.
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(c) calculate the flux at 10 bar assuming that the concentration polarization. modules remains same. [16]
Discuss clustering and solubility of liquid mixture. [16] · 3. Define: ... no adsorption at the pore wall and for the case with monolayer adsorption at the · pore wall.
(a) What is Radix-64 format? Explain how both PGP and S/MIME perform the · Radix-64 conversion is performed. (b) Describe the five principal services that ...
Farm in Maharashtra, supplied with water from a dug well pumping for 4 h a day, are given below. Determine the required discharge. [16]. 7. AjntuWorld.in ...
... carry equal marks · ***** · 1. List eight major functions of an exhaust nozzle. .... plane. Show the internal layout for swallowed air to reach the engine. Explain.
Enumerate difference between growth and non-growth associated product kinetics. [16] · 7. Write a brief note on biosensors, and describe how they are used for ...
(b) A turbine is to operate under a head of 30 m at 300 r.p.m. The discharge is ... 2. (b) An inward flow reaction turbine has an external diameter of 1 m and its.
(a) Discuss the response of high pass RC circuit for square wave input. (b) A 10Hz square wave is fed to an amplifier. Calculate and sketch the output wave ...
[16] · 8. With a neat sketch discuss the working procedure of neutron radiography, and also · give applications, advantages and limitations of this method. [16] · *****. 1 ... 5. (a) Give the limitations of x-ray diffraction method and ultrasonic met
tetrachloride during indirect chlorinate of TiO2 at 1020 0C · [16] · TiO2(g) + 2Cl2(g) = TiCl4(g) + O2. 8. (a) How do the interstitial elements affect mechanical properties of commercially · pure titanium? (b) Why is 0.2 % Pd added to titanium? What
register machine.(Hint: Use FNS). [8+8] · 5. (a) Explain the strassen's matrix multiplication · (b) Derive the time complexity for binary search. [8+8] · 6. (a) Find an ...
Variance · (b) The mean and variance of a binomial distribution are 2 and 8 / 5. Find ... marks were normally distributed with mean 70 and standard deviation 15.
Computer Science And Engineering · Time: 3 hours · Max Marks: 80 · Answer any FIVE Questions · All Questions carry equal marks · ***** · 1. (a) Distinguish between a packet-filtering router and a stateful inspection firewall? (b) âOne way to secure
1. With the help of a neat diagram indicating the various geometric elements of a · traffic rotary ... sight distance. What is the need to have SSD and factors.
2. Explain the alpha, delta, theta and beta waves emerging from the brain. [16] · 3. (a) Explain in detail on the isolation amplifiers used in medical field and its need ... Discuss the generation and propagation of action potential in a cell. [16] ·
(a) Steam pressure in a reactor heating coil. (b) Flow rate of reactants into a polymerization tank. (c) Flow of effluent from a waste water treatment holding tank into a river. (d) Flow of cooling water to a distillation condenser. [16] · 6. (a) Def
(a) State Newton's law of viscosity and give any four examples of its applications. (b) An oil of viscosity 8 poise is used for lubrication between a shaft and sleeve.
(a) Off - peak load is zero ... load current and p.f 0.1. capacitors are supplied to make the line power factor ... (b) The annual peak load of substation is 3500kW.
Set No. 2. (a) Construct a systematic (15,2) code using the generator polynomial .... taken. The bit rate is 'rb' and the channel noise has a PSD Gn(f) given by.
Discuss the principle of measuring the hardness of Heat Affected Zone using Jominey · hardenability test? .... (b) What is post weld heat treatment? Describe the ...
(a) State Darcy's law. Discuss the assumptions and limitations. .... 1. (a) State Stoke's law and explain its limitations as applicable to the sedimentation · analysis.
[4+4+4+4] · 4. Add a new method in the base class of Shapes.java that prints a message, but don't .... (d) Dynamic binding and message passing. [4+4+4+4].
Calculate the depth of indentation produced on a glass surface in ultrasonic ma- · chining by the throwing action of abrasive grain of 100 µm diameter.
