Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
ME SEMESTER IV EXAMINATION SUMMER 2018
Subject Code: 2741801 Date:- 02/05/2018
Subject Name: Anaerobic Biotechnologies
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.
Q-1

Explain microbiology of anaerobic treatment processes with diagram.
7

Give the difference between anaerobic treatment processes and aerobic treatment processes.
7
Q-2

With help of neat sketches explain the UASB.
7

Calculate the available power per m3 of biogas from 1st principle.
7
OR

Write a short note on Anaerobic Migrating Anaerobic reactor.
7
Q-3

What is the difference between High Rate Anaerobic Reactor and conventional Anaerobic Reactor?
7

Write a short note Waste Stabilization pond with neat sketch.
7
OR
Q-3

Explain sulfide toxicity for anaerobic treatment.
7

What is Biogas Enrichment? Enlist methods of biogas enrichment explain any one in detail
7
4

With the help of diagram explain IC Reactor
7

Give the difference between expanded bed reactor fluidized bed reactor.
7
OR
Q-4

Enlist and explain the environmental variables for anaerobic treatment.
7

What is the difference between up flow down flow anaerobic reactor? Draw a neat sketch of each.
7
Q-5

Write a short note on importance of mixing heating in anaerobic reactor also indicates different facilities for proving mixing heating.
7

Explain Biphasic Anaerobic Reactor with neat sketch.
7
OR
Q-5

Write a short note on BMP Test.
7

Explain causes and control of unbalanced condition in anaerobic reactor.
7

.