What are the constituents of biogas? Enlist advantages and disadvantages of biogas.

What are the constituents of biogas? Enlist advantages and disadvantages of biogas.

Answer : Biogas consists of 50-70%% methane, 30-40 % CO, and small amount of H,S, H, and N.


Enlist advantages and disadvantages of biogas.


Advantages of Biogas :

1. Biogas is renewable source of energy.

2. Biogas is a storable energy source

3. Raw material is easily available.

4. It is odourless, smokeless, and pollution free.

5. It is useful as an efficient fuel.

6. Residue (sludge) is used as fertilizer.

7. It is non poisonous.

8. The gas can be used not only for cooking but also for lighting purpose , for power generation to run small water pumps and flour mills.

9. Fertilizer is without pathogens and thus improves sanitation.

10. lt proves cheap fuel in rural areas



Disadvantages of Biogas :

1. Biogas gas production requires optimum temperature 38°C which may not be in winter season.

2. It requires pH of about 6.8 which may get change at some time.

3. It requires advance planning about 15 to 30 days.

4. Use of gobar gas becomes inconvenient in urban areas.

5. Daily addition of slurry is required.

6. Periodical removal of sludge is essential.