ENVIRONMENTAL BIOTECHNOLOGY Question papers (Regular, 2007)

SET :1

1. Define waste water and explain the characteristics of different types of waste water. [16]

2. Discuss the physical and process parameters used in UASB design. Explain with illustrative diagram. [16]

3. How will you assess the potential for successful biodegradation of organic and inorganic compounds? [16]

4. Discuss some novel technologies for the treatment of contaminated sites. [16]

5. Write short notes on the following:
(a) Thiobacillus ferrooxidans
(b) Thiobacillus thiooxidans
(c) Pseudomonas fluorescence
(d) Rhizopus arrhizus. [4×4]

6. What are the conventional and Non-conventional fuels? How the non- conventional fuels are environment friendly? Explain. [16]

7. Detoxification of xenobiotics is achieved by using biological methods. What are the Methods? [16]

8. Write notes on the following:
(a) Detoxification of toxic organics
(b) Role of GEMS in hazardous waste treatment. [8+8]


SET :2

1. Explain the aims and objectives of waste treatment by biological process. [16]

2. Discuss the physical and process parameters used in UASB design. Explain with illustrative diagram. [16]

3. What are the major waste types remediated by bioremediation and explain the requirement for bioremediation? [16]

4. Discuss some novel technologies for the treatment of contaminated sites. [16]

5. Biomining is the future need for environmental protection. How do you justify this statement? [16]

6. Write in detail about biogas production. [16]

7. Define biodegradation. explain with examples. How environment can be cleaned by Biodegradable methods. [16]

8. Explain the necessity of treating hazardous waste? What are the advantages of using microbes for the bio treatment? [16]


SET :3

1. Explain the following principles of biological treatment of wastewater.
(a) Microbial growth rates
(b) Microbial kinetics. [8+8]

2. Discuss in detail the anaerobic systems in waste water treatment. [16]

3. What is bioremediation and discuss the major considerations for managing a bioremediation project? [8+8]

4. Write short notes on the following:
(a) Land farming
(b) Bioventing
(c) Biosparging
(d) Biostimulation. [4×4]

5. Describe the importance of microorganisms involved in microbial transformation of metals. [16]

6. Write in detail about microbial enhancement of oil recovery. [16]

7. Define Recalcitant compounds. How these are formed? Explain how these can be
treated by biological methods? [16]

8. Write notes on the following:
(a) Cyanide detoxification
(b) Phenols bio-degradation. [8+8]


SET :4

1. Write short notes on the following:
(a) Biological filters
(b) Oxidation ditch
(c) Aeration
(d) Sludge disposal. [16]

2. Discuss the physical and process parameters used in UASB design. Explain with illustrative diagram. [16]

3. Define bioremediation and explain in brief the bioremediation systems. [16]

4. Explain with illustrative diagram the process principles and applications of packed bed bioreactor in liquid phase bioremediation. [16]

5. How microbes are useful in the extraction of metals from various sources? [16]

6. Explain in detail how microbes are useful in enhancing the oil recovery from oil wells? [16]

7. Write notes on the following:
(a) Role of methanogens in xenobiotic degradation
(b) Biological detoxification. [8+8]

8. Discuss biotechnological applications for hazardous waste management. [16]